56 products
Pistons,Kb Perf 7.2:1 +.005"Os Sh 1340Cc W/Pins,Locks & Rings 3.498"Std Bore Hi Compression
MID-62297
Regular price $243.55In Stock
- 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 Shovelhead 80ci - 1340cc - 3.498
7:2.1 Dome Top Piston
+.005 Bore
Pistons,Kb Perf 7.2:1 Std Bore Sh 1340Cc W/Pins,Locks & Rings 3.498"Std Bore Hi Compression
MID-62296
Regular price $243.55In Stock
- 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 Shovelhead 80ci - 1340cc - 3.498
7:2.1 Dome Top Piston
Standard Bore
Pistons,Kb Perf 10.5:1 .030"Os BT Evo W/Pins,Locks & Rings 3.498"Std Bore Hi Compression
MID-62288
Regular price $243.55In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
10.5:1 Dome Top Piston
+.020 Bore
Pistons,Kb Perf 10.5:1 .020"Os BT Evo W/Pins,Locks & Rings 3.498"Std Bore Hi Compression
MID-62287
Regular price $243.55In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
10.5:1 Dome Top Piston
+.020 Bore
Pistons,Kb Perf 10.5:1 .010"Os BT Evo W/Pins,Locks & Rings 3.498"Std Bore Hi Compression
MID-62286
Regular price $243.55In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
10.5:1 Dome Top Piston
+.010 Bore
Pistons,Kb Perf 10.5:1 .005"Os BT Evo W/Pins,Locks & Rings 3.498"Std Bore Hi Compression
MID-62285
Regular price $243.55In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
10.5:1 Dome Top Piston
+.005 Bore
Pistons,Kb Perf 10.5:1 Stdbore BT Evo W/Pins,Locks & Rings 3.498"Std Bore Hi Compression
MID-62284
Regular price $243.55In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
10.5:1 Dome Top Piston
Standard Bore
Pistons,Kb Perf 8.6:1 +.030"Os BT Evo W/Pins,Locks & Rings 3.498"Std Bore Hi Compression
MID-62282
Regular price $231.00In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
8.6:1 lat Top Piston
+.030 Bore
Pistons,Kb Perf 8.6:1 Std Bore BT Evo W/Pins,Locks & Rings 3.498"Std Bore Hi Compression
MID-62278
Regular price $231.10In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
8.6:1 lat Top Piston
Standard Bore
Pistons,Kb Perf 9:1 +.070"Os BT 1200Cc W/Pins,Locks & Rings 3.438"Std Bore Std Compression
MID-62271
Regular price $237.25In Stock
- 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 PERORMANCE PISTONS
Standard Bore & Stroke Piston set
Fits Knucklehead, Panhead, Shovelhead 74ci-1200cc-3.438
9:1 Dome Top Piston
+.070 bore
Pistons,Kb Perf 9:1 +.050"Os BT 1200Cc W/Pins,Locks & Rings 3.438"Std Bore Std Compression
MID-62269
Regular price $237.25In Stock
- 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 PERORMANCE PISTONS
Standard Bore & Stroke Piston set
Fits Knucklehead, Panhead, Shovelhead 74ci-1200cc-3.438
9:1 Dome Top Piston
+.050 bore
Pistons,Kb Perf 9:1 +.040"Os BT 1200Cc W/Pins,Locks & Rings 3.438"Std Bore Std Compression
MID-62268
Regular price $237.25In Stock
- 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 PERORMANCE PISTONS
Standard Bore & Stroke Piston set
Fits Knucklehead, Panhead, Shovelhead 74ci-1200cc-3.438
9:1 Dome Top Piston
+.040 bore
Pistons,Kb Perf 9:1 +.030"Os BT 1200Cc W/Pins,Locks & Rings 3.438"Std Bore Std Compression
MID-62267
Regular price $237.25In Stock
- 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 PERORMANCE PISTONS
Standard Bore & Stroke Piston set
Fits Knucklehead, Panhead, Shovelhead 74ci-1200cc-3.438
9:1 Dome Top Piston
+.030 bore
Pistons,Kb Perf 9:1 +.020"Os BT 1200Cc W/Pins,Locks & Rings 3.438"Std Bore Std Compression
MID-62266
Regular price $237.25In Stock
- 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 PERORMANCE PISTONS
Standard Bore & Stroke Piston set
Fits Knucklehead, Panhead, Shovelhead 74ci-1200cc-3.438
9:1 Dome Top Piston
+.020 bore
Pistons,Kb Perf 9:1 Std Bore BT 1200Cc W/Pins,Locks & Rings 3.438"Std Bore Std Compression
MID-62264
Regular price $237.25In Stock
- 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 Knucklehead, Panhead, Shovelhead 74ci-1200cc-3.438
9:1 Dome top piston
Standard bore
Pistons,Kb Perf 9.6:1 +.030"Os BT Evo 80Ci W/Pins,Locks,Rings 3.498"Std Bore Hi Compression
MID-62190
Regular price $243.55In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
9.6:1 Dome Top Piston
+.030 Bore
Pistons,Kb Perf 9.6:1 +.020"Os BT Evo 80Ci W/Pins,Locks,Rings 3.498"Std Bore Hi Compression
MID-62189
Regular price $243.55In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
9.6:1 Dome Top Piston
+.020 Bore
Pistons,Kb Perf 9.6:1 +.010"Os BT Evo 80Ci W/Pins,Locks,Rings 3.498"Std Bore Hi Compression
MID-62188
Regular price $243.55In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
9.6:1 Dome Top Piston
+.010 Bore
Pistons,Kb Perf 9.6:1 Std Bore BT Evo 80Ci W/Pins,Locks,Rings 3.498"Std Bore Hi Compression
MID-62186
Regular price $243.55In Stock
- 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 Big Twin Evolution 80ci - 1340cc - 3.498
9.6:1 Dome Top Piston
Standard Bore