• 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
• 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
• Includes instructions and clearance recommendations
• Wiseco Piston Kit
• Includes 2 pistons, rings, pins and snap rings
• 11:1 compression, 3.497" standard bore size
• Fits Big Twin Evolution 1984/1999 1340cc (80ci)

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