WISECO PISTON KIT HARLEY DAVIDSON PANHEAD 1948/1965 , SHOVELHEAD 1966/1977 9:1 COMPRESSION , 3.437" STANDARD BORE SIZE

• 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
• NOTE: HASTINGS REPLACEMENT RINGS ARE FOR ONE PISTON ONLY UNLESS OTHERWISE NOTED BY A *