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Description
These forged, 3 5/8" big bore flat topped pistons are used in S&S® Sidewinder® kits and Hot Set Up Kits® for HD® Evolution® big twins with stock cylinder heads and 4 1/4" and 4 1/2"stroke engines with stock diameter (8 1/2") flywheels and 4 3/4" stroke engines with 8 1/4"...
S&S Cycle Big Bore Kit 90" - 92-1931 Item # 919577
Description
These forged, 3 5/8" big bore flat topped pistons are used in S&S® Sidewinder® kits and Hot Set Up Kits® for HD® Evolution® big twins with stock cylinder heads and 4 1/4" and 4 1/2"stroke engines with stock diameter (8 1/2") flywheels and 4 3/4" stroke engines with 8 1/4" diameter flywheels. 3 5/8" bore.
Part Numbers for S&S Cycle Big Bore Kit 90" - 92-1931
Fitment for Parts S&S Cycle Big Bore Kit 90" - 92-1931
This part fits the following vehicles:
