Wiseco Motorcycle Pistons

Pistons,Wiseco 10:1 +.020"Os Spt 1000Cc W/Pin,Locks & Rings 3.188"Std Bore Hi Compression
All Wiseco pistons are forged from hi-silicon aluminum alloy for superior strength and dependability. The unique piston shape allows tight piston to wall clearances for quieter operation. This shape combined with a top quality ring package and computerized machined anti-detonation grooves offers you the most technically advanced piston kits available. Wiseco pistons are available with either Hastings X Style or Wiseco XC Style piston rings. All replacement ring sets include rings for one piston only. Must use 63026A when replacing piston pin lock rings in all Wiseco pistons. Hastings X Style rings are not interchangeable with Wiseco XC Style rings. All piston kits listed are designed to be used with stock stroke flywheels only. Most Wiseco pistons are machined with valve pockets that are deeper and larger than stock. These pockets provide adequate valve clearance for most high lift cams, but as with any high performance upgrade all clearances must be checked. All 883cc to 1200cc overbore and 84ci Big Bore kits do not require cylinder head modification or flywheel rebalancing unless deemed necessary by the service technician. The 84ci Big Bore kits require Big Bore cylinders and crankcases must be bored to accept the larger cylinders.Piston Kit. Ironhead Sportster 1972/Later. 1000cc, 10:1 compression, 3.188 standard bore +.020 O.S.

V-Twin Manufacturing TC-88 Big Bore 95 Piston, STD, 10:25:1, Cast - Kit

95" Big Bore piston kit is standard size for TC-88 models. Kit includes rings, clips, pins and 10.25:1 cast flat top pistons.
Order gasket set separately **Note:Run engine at moderate speeds for at least

WISECO PISTON High-Performance Forged Piston Kit, Standard, 8.5:1, stroke 4.25", Harley 84-00 FX 84-99 FL 87 - 94 XL

• Wiseco's high-tech manufacturing ensures greater operating strength and lower expansion at high temperatures
• Kits include forged pistons with ArmorGlide coated skirts, rings, retainer clips, chrome piston pins and top-end gasket kits
• Twin Cam pistons have ArmorPlating which improves ring seal, eliminates ring micro-welding, and improves the piston's ability to defend against detonation damage
• Piston kits are available with X-Ring package (.062 top ring, .062 compression ring and .158 oil ring), XC-Ring packages (.039 top ring, .062 compression ring, .158 oil ring) or VM-rings (1.2mm steel, positive twist, gas nitrided top ring, 1.2mm cast iron, taper under-hook scraper ring and 2.0mm three-piece, flex-vent oil ring with steel chrome-faced rails); VM-rings, X-Rings and XC-Rings will not interchange
• X- and XC-rings are identified by PART # in the application chart; X-Ring PART #s end with an "X" and XC-Ring PART #s end with an "XC"
• 103" kits require cylinder boring; 110" kit requires big-bore cylinders and case boring; X-Ring package (.0472" top ring, .0472" compression ring and .118" oil ring); recalibration required
• Pistons are made in the U.S.A.

WISECO PISTON High-Performance Forged Piston Kit, Standard, 10:1, Harley 84-00 FX 84-99 FL 87 - 94 XL

• Wiseco's high-tech manufacturing ensures greater operating strength and lower expansion at high temperatures
• Kits include forged pistons with ArmorGlide coated skirts, rings, retainer clips, chrome piston pins and top-end gasket kits
• Twin Cam pistons have ArmorPlating which improves ring seal, eliminates ring micro-welding, and improves the piston's ability to defend against detonation damage
• Piston kits are available with X-Ring package (.062 top ring, .062 compression ring and .158 oil ring), XC-Ring packages (.039 top ring, .062 compression ring, .158 oil ring) or VM-rings (1.2mm steel, positive twist, gas nitrided top ring, 1.2mm cast iron, taper under-hook scraper ring and 2.0mm three-piece, flex-vent oil ring with steel chrome-faced rails); VM-rings, X-Rings and XC-Rings will not interchange
• X- and XC-rings are identified by PART # in the application chart; X-Ring PART #s end with an "X" and XC-Ring PART #s end with an "XC"
• 103" kits require cylinder boring; 110" kit requires big-bore cylinders and case boring; X-Ring package (.0472" top ring, .0472" compression ring and .118" oil ring); recalibration required
• Pistons are made in the U.S.A.

WISECO PISTON High-Performance Forged Piston Kit, Harley 84-00 FX 84-99 FL 87 - 94 XL

• Wiseco's high-tech manufacturing ensures greater operating strength and lower expansion at high temperatures
• Kits include forged pistons with ArmorGlide coated skirts, rings, retainer clips, chrome piston pins and top-end gasket kits
• Twin Cam pistons have ArmorPlating which improves ring seal, eliminates ring micro-welding, and improves the piston's ability to defend against detonation damage
• Piston kits are available with X-Ring package (.062 top ring, .062 compression ring and .158 oil ring), XC-Ring packages (.039 top ring, .062 compression ring, .158 oil ring) or VM-rings (1.2mm steel, positive twist, gas nitrided top ring, 1.2mm cast iron, taper under-hook scraper ring and 2.0mm three-piece, flex-vent oil ring with steel chrome-faced rails); VM-rings, X-Rings and XC-Rings will not interchange
• X- and XC-rings are identified by PART # in the application chart; X-Ring PART #s end with an "X" and XC-Ring PART #s end with an "XC"
• 103" kits require cylinder boring; 110" kit requires big-bore cylinders and case boring; X-Ring package (.0472" top ring, .0472" compression ring and .118" oil ring); recalibration required
• Pistons are made in the U.S.A.

WISECO PISTON High-Performance Forged Piston Kit, compression 10.5, Harley 88 - 03 XL

• Wiseco's high-tech manufacturing ensures greater operating strength and lower expansion at high temperatures
• Kits include forged pistons with ArmorGlide coated skirts, rings, retainer clips, chrome piston pins and top-end gasket kits
• Twin Cam pistons have ArmorPlating which improves ring seal, eliminates ring micro-welding, and improves the piston's ability to defend against detonation damage
• Piston kits are available with X-Ring package (.062 top ring, .062 compression ring and .158 oil ring), XC-Ring packages (.039 top ring, .062 compression ring, .158 oil ring) or VM-rings (1.2mm steel, positive twist, gas nitrided top ring, 1.2mm cast iron, taper under-hook scraper ring and 2.0mm three-piece, flex-vent oil ring with steel chrome-faced rails); VM-rings, X-Rings and XC-Rings will not interchange
• X- and XC-rings are identified by PART # in the application chart; X-Ring PART #s end with an "X" and XC-Ring PART #s end with an "XC"
• 103" kits require cylinder boring; 110" kit requires big-bore cylinders and case boring; X-Ring package (.0472" top ring, .0472" compression ring and .118" oil ring); recalibration required
• Pistons are made in the U.S.A.

WISECO PISTON High-Performance Forged Piston Kit, bore size 3.875", 9:1, VM, Standard, stroke 4", Harley 99-06 FX 99-06 FL

• Wiseco's high-tech manufacturing ensures greater operating strength and lower expansion at high temperatures
• Kits include forged pistons with ArmorGlide coated skirts, rings, retainer clips, chrome piston pins and top-end gasket kits
• Twin Cam pistons have ArmorPlating which improves ring seal, eliminates ring micro-welding, and improves the piston's ability to defend against detonation damage
• Piston kits are available with X-Ring package (.062 top ring, .062 compression ring and .158 oil ring), XC-Ring packages (.039 top ring, .062 compression ring, .158 oil ring) or VM-rings (1.2mm steel, positive twist, gas nitrided top ring, 1.2mm cast iron, taper under-hook scraper ring and 2.0mm three-piece, flex-vent oil ring with steel chrome-faced rails); VM-rings, X-Rings and XC-Rings will not interchange
• X- and XC-rings are identified by PART # in the application chart; X-Ring PART #s end with an "X" and XC-Ring PART #s end with an "XC"
• 103" kits require cylinder boring; 110" kit requires big-bore cylinders and case boring; X-Ring package (.0472" top ring, .0472" compression ring and .118" oil ring); recalibration required
• Pistons are made in the U.S.A.

WISECO PISTON High-Performance Forged Piston Kit, bore size 3.875", 9:1, VM, size .010", Harley 99-06 FX 99-06 FL

• Wiseco's high-tech manufacturing ensures greater operating strength and lower expansion at high temperatures
• Kits include forged pistons with ArmorGlide coated skirts, rings, retainer clips, chrome piston pins and top-end gasket kits
• Twin Cam pistons have ArmorPlating which improves ring seal, eliminates ring micro-welding, and improves the piston's ability to defend against detonation damage
• Piston kits are available with X-Ring package (.062 top ring, .062 compression ring and .158 oil ring), XC-Ring packages (.039 top ring, .062 compression ring, .158 oil ring) or VM-rings (1.2mm steel, positive twist, gas nitrided top ring, 1.2mm cast iron, taper under-hook scraper ring and 2.0mm three-piece, flex-vent oil ring with steel chrome-faced rails); VM-rings, X-Rings and XC-Rings will not interchange
• X- and XC-rings are identified by PART # in the application chart; X-Ring PART #s end with an "X" and XC-Ring PART #s end with an "XC"
• 103" kits require cylinder boring; 110" kit requires big-bore cylinders and case boring; X-Ring package (.0472" top ring, .0472" compression ring and .118" oil ring); recalibration required
• Pistons are made in the U.S.A.

WISECO PISTON High-Performance Forged Piston Kit, 8.5:1, size .040", Harley 84-00 FX 84-99 FL 87 - 94 XL

• Wiseco's high-tech manufacturing ensures greater operating strength and lower expansion at high temperatures
• Kits include forged pistons with ArmorGlide coated skirts, rings, retainer clips, chrome piston pins and top-end gasket kits
• Twin Cam pistons have ArmorPlating which improves ring seal, eliminates ring micro-welding, and improves the piston's ability to defend against detonation damage
• Piston kits are available with X-Ring package (.062 top ring, .062 compression ring and .158 oil ring), XC-Ring packages (.039 top ring, .062 compression ring, .158 oil ring) or VM-rings (1.2mm steel, positive twist, gas nitrided top ring, 1.2mm cast iron, taper under-hook scraper ring and 2.0mm three-piece, flex-vent oil ring with steel chrome-faced rails); VM-rings, X-Rings and XC-Rings will not interchange
• X- and XC-rings are identified by PART # in the application chart; X-Ring PART #s end with an "X" and XC-Ring PART #s end with an "XC"
• 103" kits require cylinder boring; 110" kit requires big-bore cylinders and case boring; X-Ring package (.0472" top ring, .0472" compression ring and .118" oil ring); recalibration required
• Pistons are made in the U.S.A.

WISECO PISTON High-Performance Forged Piston Kit, 8.5:1, size .010", Harley 84-00 FX 84-99 FL 87 - 94 XL

• Wiseco's high-tech manufacturing ensures greater operating strength and lower expansion at high temperatures
• Kits include forged pistons with ArmorGlide coated skirts, rings, retainer clips, chrome piston pins and top-end gasket kits
• Twin Cam pistons have ArmorPlating which improves ring seal, eliminates ring micro-welding, and improves the piston's ability to defend against detonation damage
• Piston kits are available with X-Ring package (.062 top ring, .062 compression ring and .158 oil ring), XC-Ring packages (.039 top ring, .062 compression ring, .158 oil ring) or VM-rings (1.2mm steel, positive twist, gas nitrided top ring, 1.2mm cast iron, taper under-hook scraper ring and 2.0mm three-piece, flex-vent oil ring with steel chrome-faced rails); VM-rings, X-Rings and XC-Rings will not interchange
• X- and XC-rings are identified by PART # in the application chart; X-Ring PART #s end with an "X" and XC-Ring PART #s end with an "XC"
• 103" kits require cylinder boring; 110" kit requires big-bore cylinders and case boring; X-Ring package (.0472" top ring, .0472" compression ring and .118" oil ring); recalibration required
• Pistons are made in the U.S.A.

WISECO PISTON High-Performance Forged Piston Kit, 10:1, Harley 84-00 FX 84-99 FL 87 - 94 XL

• Wiseco's high-tech manufacturing ensures greater operating strength and lower expansion at high temperatures
• Kits include forged pistons with ArmorGlide coated skirts, rings, retainer clips, chrome piston pins and top-end gasket kits
• Twin Cam pistons have ArmorPlating which improves ring seal, eliminates ring micro-welding, and improves the piston's ability to defend against detonation damage
• Piston kits are available with X-Ring package (.062 top ring, .062 compression ring and .158 oil ring), XC-Ring packages (.039 top ring, .062 compression ring, .158 oil ring) or VM-rings (1.2mm steel, positive twist, gas nitrided top ring, 1.2mm cast iron, taper under-hook scraper ring and 2.0mm three-piece, flex-vent oil ring with steel chrome-faced rails); VM-rings, X-Rings and XC-Rings will not interchange
• X- and XC-rings are identified by PART # in the application chart; X-Ring PART #s end with an "X" and XC-Ring PART #s end with an "XC"
• 103" kits require cylinder boring; 110" kit requires big-bore cylinders and case boring; X-Ring package (.0472" top ring, .0472" compression ring and .118" oil ring); recalibration required
• Pistons are made in the U.S.A.

Pistons,Wiseco 9.5:1 Std Bore Sh 1340Cc W/Pin Locks & Rings 3.497 Std Bore Hi Compression

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Shovelhead 1978/1984 1340cc (80ci)
9.5:1 compression, 3.497 standard bore sizeNote:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons

Pistons,Wiseco 10.5:1 Std Bore Spt 88/03 1200Cc W/Pins,Locks& Rings 3.497" Bore Mfg# K1685
All Wiseco pistons are forged from hi-silicon aluminum alloy for superior strength and dependability. The unique piston shape allows tight piston to wall clearances for quieter operation. This shape combined with a top quality ring package and computerized machined anti-detonation grooves offers you the most technically advanced piston kits available. Wiseco pistons are available with either Hastings X Style or Wiseco XC Style piston rings. All replacement ring sets include rings for one piston only. Must use 63026A when replacing piston pin lock rings in all Wiseco pistons. Hastings X Style rings are not interchangeable with Wiseco XC Style rings. All piston kits listed are designed to be used with stock stroke flywheels only. Most Wiseco pistons are machined with valve pockets that are deeper and larger than stock. These pockets provide adequate valve clearance for most high lift cams, but as with any high performance upgrade all clearances must be checked. All 883cc to 1200cc overbore and 84ci Big Bore kits do not require cylinder head modification or flywheel rebalancing unless deemed necessary by the service technician. The 84ci Big Bore kits require Big Bore cylinders and crankcases must be bored to accept the larger cylinders.Piston Kit. Evolution Sportster 1988/2003. 1200cc domed 10:5.1 compression. 3.497 standard bore. Standard.

Pistons,Wiseco 10:1 +.010" Os Spt883/1200Cc W/Pin,Lock,Rings 3.497"Std Bore Hi Compression
All Wiseco pistons are forged from hi-silicon aluminum alloy for superior strength and dependability. The unique piston shape allows tight piston to wall clearances for quieter operation. This shape combined with a top quality ring package and computerized machined anti-detonation grooves offers you the most technically advanced piston kits available. Wiseco pistons are available with either Hastings X Style or Wiseco XC Style piston rings. All replacement ring sets include rings for one piston only. Must use 63026A when replacing piston pin lock rings in all Wiseco pistons. Hastings X Style rings are not interchangeable with Wiseco XC Style rings. All piston kits listed are designed to be used with stock stroke flywheels only. Most Wiseco pistons are machined with valve pockets that are deeper and larger than stock. These pockets provide adequate valve clearance for most high lift cams, but as with any high performance upgrade all clearances must be checked. All 883cc to 1200cc overbore and 84ci Big Bore kits do not require cylinder head modification or flywheel rebalancing unless deemed necessary by the service technician. The 84ci Big Bore kits require Big Bore cylinders and crankcases must be bored to accept the larger cylinders.Piston Kit. Sportster Evolution 1986/Later. 883cc & 1100cc overbore to 1200cc reverse dome, 10:1 compression, 3.497 standard bore +.010 O.S.

Pistons,Wiseco 9.5:1 +.010"Os Spt883/1200Cc W/Pin,Lock,Rings 3.497"Std Bore Hi Compression
All Wiseco pistons are forged from hi-silicon aluminum alloy for superior strength and dependability. The unique piston shape allows tight piston to wall clearances for quieter operation. This shape combined with a top quality ring package and computerized machined anti-detonation grooves offers you the most technically advanced piston kits available. Wiseco pistons are available with either Hastings X Style or Wiseco XC Style piston rings. All replacement ring sets include rings for one piston only. Must use 63026A when replacing piston pin lock rings in all Wiseco pistons. Hastings X Style rings are not interchangeable with Wiseco XC Style rings. All piston kits listed are designed to be used with stock stroke flywheels only. Most Wiseco pistons are machined with valve pockets that are deeper and larger than stock. These pockets provide adequate valve clearance for most high lift cams, but as with any high performance upgrade all clearances must be checked. All 883cc to 1200cc overbore and 84ci Big Bore kits do not require cylinder head modification or flywheel rebalancing unless deemed necessary by the service technician. The 84ci Big Bore kits require Big Bore cylinders and crankcases must be bored to accept the larger cylinders.Piston Kit. Sportster Evolution 1986/Later. 883cc & 1100cc overbore to 1200cc reverse dome, 9.5:1 compression, 3.497 standard bore +.010 O.S.

Pistons,Wiseco 9.5:1 Std Bore Spt883/1200Cc W/Pin,Lock,Rings 3.497" Std Bore Mfg K1655
All Wiseco pistons are forged from hi-silicon aluminum alloy for superior strength and dependability. The unique piston shape allows tight piston to wall clearances for quieter operation. This shape combined with a top quality ring package and computerized machined anti-detonation grooves offers you the most technically advanced piston kits available. Wiseco pistons are available with either Hastings X Style or Wiseco XC Style piston rings. All replacement ring sets include rings for one piston only. Must use 63026A when replacing piston pin lock rings in all Wiseco pistons. Hastings X Style rings are not interchangeable with Wiseco XC Style rings. All piston kits listed are designed to be used with stock stroke flywheels only. Most Wiseco pistons are machined with valve pockets that are deeper and larger than stock. These pockets provide adequate valve clearance for most high lift cams, but as with any high performance upgrade all clearances must be checked. All 883cc to 1200cc overbore and 84ci Big Bore kits do not require cylinder head modification or flywheel rebalancing unless deemed necessary by the service technician. The 84ci Big Bore kits require Big Bore cylinders and crankcases must be bored to accept the larger cylinders.Piston Kit. Sportster Evolution 1986/Later. 883cc & 1100cc overbore to 1200cc reverse dome, 9.5:1 compression, 3.497 standard bore. Standard.

Pistons,Wiseco 10:1 +.030"Os Bt Evo 1340Cc W/Pin,Lock,Rings 3.497"Std Bore Hi Compression

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Big Twin Evolution 1984/1999 1340cc (80ci)
10:1 compression, 3.497 standard bore +.030 O.S.Note:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons

Pistons,Wiseco 10:1 +.020"Os Bt Evo 1340Cc W/Pin,Lock,Rings 3.497"Std Bore Hi Compression

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Big Twin Evolution 1984/1999 1340cc (80ci)
10:1 compression, 3.497 standard bore +.020 O.S.Note:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons

Pistons,Wiseco 10:1 +.010"Os Bt Evo 1340Cc W/Pin,Lock,Rings 3.497"Std Bore Hi Compression

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Big Twin Evolution 1984/1999 1340cc (80ci)
10:1 compression, 3.497 standard bore +.010 O.S.Note:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons

Pistons,Wiseco 10:1 +.005"Os Bt Evo 1340Cc W/Pin,Lock,Rings 3.497" Std Bore Mfg K1675

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Big Twin Evolution 1984/1999 1340cc (80ci)
10:1 compression, 3.497 standard bore +.005 O.S.Note:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons

Pistons,Wiseco 10:1 Std Bore Bt Evo 1340Cc W/Pin,Lock,Rings 3.497" Std Bore Mfg K1665

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Big Twin Evolution 1984/1999 13400cc (80ci)
10:1 compression, 3.497 standard bore sizeNote:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons

Pistons,Wiseco 9:1 +.010"Os Tc 95"1550Cc,3.875",Std Comp Inc Pins,Locks,Rings,Mfg#K1721

• Wiseco Big Bore Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes Instructions and clearance recommendations
• All Piston Kits include Cometic brand gasket sets

+.010 O.S., 9:1 compression ratio
Fits Twin Cam 1999/Later 1550cc (95ci)Note:

Hastings replacement rings are for one piston only

Pistons,Wiseco 9:1 Std Bore Tc 95" 1550Cc,3.875",Std Comp W/Pins, Locks & Rings #Vt2719

• Wiseco Big Bore Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes Instructions and clearance recommendations
• All Piston Kits include Cometic brand gasket sets

Standard Bore Size, 9:1 compression ratio
Fits Twin Cam 1999/Later 1550cc (95ci)Note:

Hastings replacement rings are for one piston only

Pistons,Wiseco 10.5:1 Std Bore Tc 95" 1550Cc,3.875",High Comp Inc Pins,Locks,Rings,Mfg#K1709

• Wiseco Big Bore Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes Instructions and clearance recommendations
• All Piston Kits include Cometic brand gasket sets

Standard Bore Size, 10.5:1 compression ratio
Fits Twin Cam 1999/Later 1550cc (95ci)Note:

Hastings replacement rings are for one piston only

Pistons,Wiseco 8.5:1 +.020"Os Bt Evo 1340Cc W/Pin.Lock,Rings 3.497 Std Bore Hi Compression

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Big Twin Evolution 1984/1999 1340cc (80ci)
8.5:1 compression, 3.497 standard bore +.020 O.S.Note:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons

Pistons,Wiseco 8.5:1 +.010"Os Bt Evo 1340Cc W/Pin,Lock,Rings 3.497" Std Bore Mfg K1641

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Big Twin Evolution 1984/1999 1340cc (80ci)
8.5:1 compression, 3.497 standard bore +.010 O.S.Note:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons

Pistons,Wiseco 8.5:1 Std Bore Bt Evo 1340Cc W/Pin,Lock,Rings 3.497 Std Bore Hi Compression

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Big Twin Evolution 1984/1999 1340cc (80ci)
8.5:1 compression, 3.497 standard bore size Note:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons

Pistons,Wiseco 9.5:1 +.040"Os Sh 1340Cc W/Pin Locks & Rings 3.497 Std Bore Hi Compression

• WISECO
• Pistons are forged from hi-silicon aluminum alloy for superior strength and dependability
• The unique piston shape allows tight piston to wall clearances for quieter operation
• Grooves are machined around the top ring lands to reduce detonation and improve the sealing power of the top ring
• Designed for Stock stroke flywheels only
• All wrist pin holes are ream fit for a perfect geometrical surface
• Enlarged valve pockets provide the clearance for larger valves and high lift cams but must be checked
• Includes instructions and clearance recommendations

Piston Kit fits Shovelhead 1978/1984 1340cc,(80ci)
9.5:1 compression, 3.497 standard bore +.040 O.S.Note:

Hastings replacement rings are for one piston only unless otherwise noted by a (*)
* Includes rings for 2 pistons