KB Forged Motorcycle Pistons from K and G Cycles!
63 products
63 products
Kb Forged Pistons Std Big Twin Evo 84/99 3.498" Std Bore,Kb920Std
MID-62489
Regular price $297.65In Stock
/
Shipping calculated at checkout.
Kb Forged Pistons Std Big Twin Evo 84/99 3.498" Std Bore,Kb920Std
Standard Bore Piston Set
80ci - 1340cc - 3.498
9.5:1 Compression
Fits Big Twin Evolution 1984/1999
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
Standard Bore Piston Set
80ci - 1340cc - 3.498
9.5:1 Compression
Fits Big Twin Evolution 1984/1999
Piston,Kb Big Bore +.020"Os Tc88 99/L* 95"Cid,4.0"Stroke & 3.875" Bore 9.3:1 Comp Kb348
MID-62482
Regular price $292.30In Stock
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Shipping calculated at checkout.
Piston,Kb Big Bore +.020"Os Tc88 99/L* 95"Cid,4.0"Stroke & 3.875" Bore 9.3:1 Comp Kb348
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon, and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy compositon keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself producing a cooler running piston
- Can be fitted with a clearance as small as .00075
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the top and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings Moly rings
- Wrist pins measure .792 O.D. on single cam models and .927 on Twin cam models
- Sold in sets as shown
- Replacement ring sets availableKB Performance Pistons
Standard Bore & Stroke Piston set
Fits Twin Cam 95ci - 3.875
9.3:1 lat Top Piston (4.0 Stroke)
+.020 Bore
Pistons,Kb 8.5:1 +.030"Os Ph Sh 88/98Ci 4.25/4.75 Stroke 3.625"Std Bore Hi Compression
MID-62427
Regular price $292.30In Stock
/
Shipping calculated at checkout.
Pistons,Kb 8.5:1 +.030"Os Ph Sh 88/98Ci 4.25/4.75 Stroke 3.625"Std Bore Hi Compression
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon, and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy compositon keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself producing a cooler running piston
- Can be fitted with a clearance as small as .00075
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the top and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings Moly rings
- Wrist pins measure .792 O.D. on single cam models and .927 on Twin cam models
- Sold in sets as shown
- Replacement ring sets availableKB Performance Pistons
Big Bore & Stroker Piston set
Fits Panhead & Shovelhead 88ci -98ci- 3.625
8.5:1 Dome Top Piston (4.25 - 4.75 Stroke)
.030 Bore
KB PERFORMANCE KB Performance Forged Piston Kit, Use Lock Rings PART #0913-0001., Harley 86 - 16 XL
DS-09100930
Regular price $311.95In Stock
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Shipping calculated at checkout.
KB PERFORMANCE KB Performance Forged Piston Kit, Use Lock Rings PART #0913-0001., Harley 86 - 16 XL
- Pistons forged from 4032 aluminum alloy
- Offset pin design for quiet operation
- Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
- Piston pin lock rings available separately
- Replacement rings are also available separately
KB PERFORMANCE KB Performance Forged Piston Kit, Standard, bore 3.875", Harley 07-16 FX 07-16 FL
DS-09103970
Regular price $335.95In Stock
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Shipping calculated at checkout.
KB PERFORMANCE KB Performance Forged Piston Kit, Standard, bore 3.875", Harley 07-16 FX 07-16 FL
- Pistons forged from 4032 aluminum alloy
- Offset pin design for quiet operation
- Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
- Piston pin lock rings available separately
- Replacement rings are also available separately
KB PERFORMANCE KB Performance Forged Piston Kit, bore 4", size +.010", Harley 07-16 FX 07-16 FL
DS-09103975
Regular price $335.95In Stock
/
Shipping calculated at checkout.
KB PERFORMANCE KB Performance Forged Piston Kit, bore 4", size +.010", Harley 07-16 FX 07-16 FL
- Pistons forged from 4032 aluminum alloy
- Offset pin design for quiet operation
- Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
- Piston pin lock rings available separately
- Replacement rings are also available separately
KB PERFORMANCE KB Performance Forged Piston Kit, bore 4", size +.005", Harley 07-16 FX 07-16 FL
DS-09103974
Regular price $335.95In Stock
/
Shipping calculated at checkout.
KB PERFORMANCE KB Performance Forged Piston Kit, bore 4", size +.005", Harley 07-16 FX 07-16 FL
- Pistons forged from 4032 aluminum alloy
- Offset pin design for quiet operation
- Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
- Piston pin lock rings available separately
- Replacement rings are also available separately
Kb Forged Pistons .005" Os Tc 07/L* 103Ci Moly Coated 3.875" Std Bore,Kb907C.005
MID-62496
Regular price $320.25In Stock
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Shipping calculated at checkout.
Kb Forged Pistons .005" Os Tc 07/L* 103Ci Moly Coated 3.875" Std Bore,Kb907C.005
.005 O.S. Bore Piston Set
103ci - 3.875
9.5:1 Compression
Moly Coated Skirts
Fits Twin Cam 96 2007/Later Big Bore to 103ci
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
.005 O.S. Bore Piston Set
103ci - 3.875
9.5:1 Compression
Moly Coated Skirts
Fits Twin Cam 96 2007/Later Big Bore to 103ci
Kb Forged Pistons,Std Bore Tc 07/L* 103 Ci,Moly Coated 3.875" Std Bore,Kb907C.Std
MID-62495
Regular price $320.25In Stock
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Shipping calculated at checkout.
Kb Forged Pistons,Std Bore Tc 07/L* 103 Ci,Moly Coated 3.875" Std Bore,Kb907C.Std
Standard Bore Piston Set
103ci - 3.875
9.5:1 Compression
Moly Coated Skirts
Fits Twin Cam 96 2007/Later Big Bore to 103ci
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
Standard Bore Piston Set
103ci - 3.875
9.5:1 Compression
Moly Coated Skirts
Fits Twin Cam 96 2007/Later Big Bore to 103ci
Kb Forged Pistons .010" Os Tc 99/06 95 Ci Moly Coated 3.875"Std Bore,Kb904C.010
MID-62494
Regular price $320.25In Stock
/
Shipping calculated at checkout.
Kb Forged Pistons .010" Os Tc 99/06 95 Ci Moly Coated 3.875"Std Bore,Kb904C.010
.010 O.S. Bore Piston Set
95ci - 3.875
9.25:1 Compression
Moly Coated Skirts
Fits Twin Cam 88 1999/2006 Big Bore to 95ci
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
.010 O.S. Bore Piston Set
95ci - 3.875
9.25:1 Compression
Moly Coated Skirts
Fits Twin Cam 88 1999/2006 Big Bore to 95ci
Kb Forged Pistons,.005" Os Tc 99/06 95 Ci Moly Coated 3.875"Std Bore,Kb904C.005
MID-62493
Regular price $305.00In Stock
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Shipping calculated at checkout.
Kb Forged Pistons,.005" Os Tc 99/06 95 Ci Moly Coated 3.875"Std Bore,Kb904C.005
.005 O.S. Bore Piston Set
95ci - 3.875
9.25:1 Compression
Moly Coated Skirts
Fits Twin Cam 88 1999/2006 Big Bore to 95ci
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
.005 O.S. Bore Piston Set
95ci - 3.875
9.25:1 Compression
Moly Coated Skirts
Fits Twin Cam 88 1999/2006 Big Bore to 95ci
Kb Forged Pistons,Std Bore Tc 99/06 95 Ci,Moly Coated 3.875" Std Bore,Kb904Cstd
MID-62492
Regular price $336.35In Stock
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Shipping calculated at checkout.
Kb Forged Pistons,Std Bore Tc 99/06 95 Ci,Moly Coated 3.875" Std Bore,Kb904Cstd
Standard Bore Piston Set
95ci - 3.875
9.25:1 Compression
Moly Coated Skirts
Fits Twin Cam 88 1999/2006 Big Bore to 95ci
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
Standard Bore Piston Set
95ci - 3.875
9.25:1 Compression
Moly Coated Skirts
Fits Twin Cam 88 1999/2006 Big Bore to 95ci
Kb Forged Pistons .005" Os Ph Sh 88/98 Ci Big Bore 3.625" Std Bore Kb929.005
MID-62487
Regular price $263.75In Stock
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Shipping calculated at checkout.
Kb Forged Pistons .005" Os Ph Sh 88/98 Ci Big Bore 3.625" Std Bore Kb929.005
+.005 O.S. Bore Piston Set
88ci - 98ci - 3.625
9.5:1 Compression
(4.25 - 4.75 stroke)
Fits Panhead, Shovelhead Big Bore
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
+.005 O.S. Bore Piston Set
88ci - 98ci - 3.625
9.5:1 Compression
(4.25 - 4.75 stroke)
Fits Panhead, Shovelhead Big Bore
Kb Forged Pistons .010 Os Spt 86/08 883 To 1200 Conv Moly Coated Kb923C.010
MID-62485
Regular price $297.65In Stock
/
Shipping calculated at checkout.
Kb Forged Pistons .010 Os Spt 86/08 883 To 1200 Conv Moly Coated Kb923C.010
+.010 O.S. Bore Piston Set
74ci - 1200cc - 3.498
9.5:1 Compression
Moly Coated Skirts
Fits Sportster 1986/2008, 883 to 1200 Conversion
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
+.010 O.S. Bore Piston Set
74ci - 1200cc - 3.498
9.5:1 Compression
Moly Coated Skirts
Fits Sportster 1986/2008, 883 to 1200 Conversion
Kb Forged Pistons,.005 Os Spt 86/08 883 To 1200 Conv Moly Coated, Kb923C.005
MID-62484
Regular price $297.65In Stock
/
Shipping calculated at checkout.
Kb Forged Pistons,.005 Os Spt 86/08 883 To 1200 Conv Moly Coated, Kb923C.005
+.005 O.S. Bore Piston Set
74ci - 1200cc - 3.498
9.5:1 Compression
Moly Coated Skirts
Fits Sportster 1986/2008, 883 to 1200 Conversion
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
+.005 O.S. Bore Piston Set
74ci - 1200cc - 3.498
9.5:1 Compression
Moly Coated Skirts
Fits Sportster 1986/2008, 883 to 1200 Conversion
Kb Forged Pistons,Std Bore Spt 86/08,883 To 1200 Conv Moly Coated, Kb923C
MID-62483
Regular price $297.65In Stock
/
Shipping calculated at checkout.
Kb Forged Pistons,Std Bore Spt 86/08,883 To 1200 Conv Moly Coated, Kb923C
Standard Bore Piston Set
74ci - 1200cc - 3.498
9.5:1 Compression
Moly Coated Skirts
Fits Sportster 1986/2008, 883 to 1200 Conversion
- orged 4032 alloy is an 11% silicon alloy that is formed in a forging press then fully machined
- This process offers you the strongest piston available for your engine
- The forged pistons are suited for street or race and are economically priced
- All pistons come with offset wrist pin holes to help keep your engine running quieter
- Sold in sets with rings, pins and spiral locks
Standard Bore Piston Set
74ci - 1200cc - 3.498
9.5:1 Compression
Moly Coated Skirts
Fits Sportster 1986/2008, 883 to 1200 Conversion
Pistons,Kb Perf 8.9:1 +.010"Os Spt 88/03 1200Cc W/Pins,Locks, Rings #Kb295.010
MID-62431
Regular price $224.65In Stock
/
Shipping calculated at checkout.
Pistons,Kb Perf 8.9:1 +.010"Os Spt 88/03 1200Cc W/Pins,Locks, Rings #Kb295.010
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Evolution Sportster 1988/2003 1200cc (74ci)
Standard bore =3.498
8.9:1 compression ratio
lat Top Pistons with valve pockets cut .060 deeper for use with shaved heads & high lift cams
+.010 Bore Note: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Kb Pistons 8.2:1,+.040"Os Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
MID-62407
Regular price $264.50In Stock
/
Shipping calculated at checkout.
Kb Pistons 8.2:1,+.040"Os Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Ironhead Sportster 1972/1985 1000cc (61ci)
Standard bore =3.188
8.2:1 compression ratio Dome Top Piston
+.040 Bore
Note: It is not recommended to bore 1972/Early 1973 models more than +.030 Note: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Kb Pistons 8.2:1,+.030"Os Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
MID-62406
Regular price $264.50In Stock
/
Shipping calculated at checkout.
Kb Pistons 8.2:1,+.030"Os Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Ironhead Sportster 1972/1985 1000cc (61ci)
Standard bore =3.188
8.2:1 compression ratio Dome Top Piston
+.030 Bore
Note: It is not recommended to bore 1972/Early 1973 models more than +.030 Note: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Pistons,Kb Perf 7.5:1 +.020"Os Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
MID-62405
Regular price $264.50In Stock
/
Shipping calculated at checkout.
Pistons,Kb Perf 7.5:1 +.020"Os Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Ironhead Sportster 1972/1985 1000cc (61ci)
Standard bore =3.188
8.2:1 compression ratio Dome Top Piston
+.020 Bore
Note: It is not recommended to bore 1972/Early 1973 models more than +.030 Note: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Kb Pistons,8.2:1,+.010"Os Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
MID-62404
Regular price $220.16In Stock
/
Shipping calculated at checkout.
Kb Pistons,8.2:1,+.010"Os Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Ironhead Sportster 1972/1985 1000cc (61ci)
Standard bore =3.188
8.2:1 compression ratio Dome Top Piston
+.010 Bore
Note: It is not recommended to bore 1972/Early 1973 models more than +.030 Note: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Kb Pistons 8.2:1 Std Bore Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
MID-62402
Regular price $266.60In Stock
/
Shipping calculated at checkout.
Kb Pistons 8.2:1 Std Bore Spt 1000Cc W/Pins,Locks,Rings 3.188"Std Bore Low Compression
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Ironhead Sportster 1972/1985 1000cc (61ci)
Standard bore =3.188
8.2:1 compression ratio Dome Top Piston
Standard Bore
Note: It is not recommended to bore 1972/Early 1973 models more than +.030 Note: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Pistons,Kb Perf 10:1 +.005"Os Spt 86/L* Converts 883 To 1200 W/Pins,Locks,Rings #Kb272.005
MID-62291
Regular price $243.55In Stock
/
Shipping calculated at checkout.
Pistons,Kb Perf 10:1 +.005"Os Spt 86/L* Converts 883 To 1200 W/Pins,Locks,Rings #Kb272.005
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Evolution Sportster 1986/Later 1200cc (74ci)
Standard bore =3.498
10:1 compression ratio
Dish Top Pistons that do not require head modification
+.005 Bore Note: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Pistons,Kb Perf 10:1 Std Bore Spt 86/L* Converts 883 To 1200 W/Pins,Locks,Rings # Kb272Std
MID-62290
Regular price $243.55In Stock
/
Shipping calculated at checkout.
Pistons,Kb Perf 10:1 Std Bore Spt 86/L* Converts 883 To 1200 W/Pins,Locks,Rings # Kb272Std
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Evolution Sportster 1986/Later 1200cc (74ci)
Standard bore =3.498
10:1 compression ratio
Dish Top Pistons that do not require head modification
Standard BoreNote: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Pistons,Kb Perf 9:1 +.030"Os Spt 88/03 1200Cc W/Pins,Locks, Rings #Kb264.030
MID-62276
Regular price $214.64In Stock
/
Shipping calculated at checkout.
Pistons,Kb Perf 9:1 +.030"Os Spt 88/03 1200Cc W/Pins,Locks, Rings #Kb264.030
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Evolution Sportster 1988/2003 1200cc (74ci)
Standard bore =3.498
9:1 compression ratio lat Top Piston
+.030 Bore Note: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Pistons,Kb Perf 9:1 +.020"Os Spt 88/03 1200Cc W/Pins,Locks, Rings #Kb264.020
MID-62275
Regular price $224.65In Stock
/
Shipping calculated at checkout.
Pistons,Kb Perf 9:1 +.020"Os Spt 88/03 1200Cc W/Pins,Locks, Rings #Kb264.020
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Evolution Sportster 1988/2003 1200cc (74ci)
Standard bore =3.498
9:1 compression ratio lat Top Piston
+.020 Bore Note: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Pistons,Kb Perf 9:1 +.010"Os Spt 88/03 1200Cc W/Pins,Locks, Rings #Kb264.010
MID-62274
Regular price $224.65In Stock
/
Shipping calculated at checkout.
Pistons,Kb Perf 9:1 +.010"Os Spt 88/03 1200Cc W/Pins,Locks, Rings #Kb264.010
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792 O.D.
- Replacement rings are availableKB Performance Pistons
Fits Evolution Sportster 1988/2003 1200cc (74ci)
Standard bore =3.498
9:1 compression ratio lat Top Piston
+.010 BoreNote: It is not recommended to bore Sportster 1972/Early 1973 1000cc models more than .030 oversize. These are easily identified by their 6 point head bolts.
Piston,Kb Big Bore +.010"Os Tc88 99/L* 95"Cid,4.0"Stroke & 3.875' Bore 9.3:1 Comp Kb348
MID-62481
Regular price $292.30In Stock
/
Shipping calculated at checkout.
Piston,Kb Big Bore +.010"Os Tc88 99/L* 95"Cid,4.0"Stroke & 3.875' Bore 9.3:1 Comp Kb348
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon, and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy compositon keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself producing a cooler running piston
- Can be fitted with a clearance as small as .00075
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the top and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings Moly rings
- Wrist pins measure .792 O.D. on single cam models and .927 on Twin cam models
- Sold in sets as shown
- Replacement ring sets availableKB Performance Pistons
Standard Bore & Stroke Piston set
Fits Twin Cam 95ci - 3.875
9.3:1 lat Top Piston (4.0 Stroke)
+.010 Bore
Pistons,Kb Big Bore "Std" Tc88 99/L* 95"Cid,4.0"Stroke & 3.875" Bore 9.3:1 Comp Kb348
MID-62480
Regular price $292.30In Stock
/
Shipping calculated at checkout.
Pistons,Kb Big Bore "Std" Tc88 99/L* 95"Cid,4.0"Stroke & 3.875" Bore 9.3:1 Comp Kb348
- Spawned from this successful manufacturer's line of automotive pistons
- Lightweight permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon, and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy compositon keeps heat confined to the combustion chamber and reduces heat transfer to the piston Fitself producing a cooler running piston
- Can be fitted with a clearance as small as .00075
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the top and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings Moly rings
- Wrist pins measure .792 O.D. on single cam models and .927 on Twin cam models
- Sold in sets as shown
- Replacement ring sets availableKB Performance Pistons
Standard Bore & Stroke Piston set
Fits Twin Cam 95ci - 3.875
9.3:1 lat Top Piston (4.0 Stroke)
Standard Bore
