• Conversion  piston set for 1986 - Up Evolution Sportster
• Manufactured by WISECO
• 10:1 compression
• Standard bore 3.497"
• Reverse dome, conversion pistons
• For converting an 883cc to a 1200cc with no headwork required
• Includes pistons, rings, pins, and lock rings
• 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 kit available
• 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

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