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

MID-62165

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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 +.010"Os BT Evo 1340Cc W/Pin,Lock,Rings 3.497" Std Bore Mfg K1641 Harley Mid-USA - K and G Cycles