Wiseco Motorcycle Pistons

Piston,Wiseco 7:1 +.020"Os Sh 1340Cc W/Pin Locks & Rings 3.497 Std Bore Std 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)
7:1 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

Piston,Wiseco 7:1 +.010"Os Sh 1340Cc W/Pin Locks & Rings 3.497 Std Bore Std 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)
7:1 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

Piston,Wiseco 7;1 Std Bore Sh 1340Cc W/Pin Locks & Rings 3.497 Std Bore Std 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)
7:1 compression, 3.497 standard bore sizeNote:

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

Piston,Wiseco 9:1 +.060"Os Ph Sh 48/77 1200Cc W/Pins Lock Rings 3.437"Std Bore High Comp

• 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 Panhead 1948/1965, Shovelhead 1966/1977 1200cc (74ci)
9:1 compression, 3.437 standard bore +.060 O.S.Note:

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

Piston,Wiseco 9:1 +.030"Os Ph Sh 48/77 1200Cc W/Pins Lock Rings,3.437" Std Bore K1608

• 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 Panhead 1948/1965, Shovelhead 1966/1977 1200cc (74ci)
9:1 compression, 3.437 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 +.040"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 +.040 O.S.

Pistons,Wiseco 10:1 +.010"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 +.010 O.S.

V-Twin Manufacturing 3-5/8" Piston Set Standard Size - Kit
3-5/8" Piston Set Standard Size Sifton piston set is standard size for a 3-5/8" Big Bore. Has a 9.75:1 compression, 3-5/8" bore with a 4-5/8" stroke. **Note:Run engine at moderate speeds for at least 500 miles, avoiding excessive running i