Features
Big Bore Forged Piston Kit - 3.937" Bore - 107" Twin Cam - Standard
- Pistons are compatible with stock rods with tapered wristpin ends
- Stock cylinders may be bored to accommodate larger piston
- Bore cylinders to nominal diameter +/- 0.0005" for correct clearance
Info
Shipping Information
Due to high volume some orders can take up to 14 business days to ship.
If your order contains a part and merch, they may ship separately.
Special Instructions
BORE SIZE S/B 3.937" 25PJL
GIVEAWAY #17
GIVEAWAY #17
50X + GIVEAWAY ENDS IN:
ONE WINNER. TWO PRIZES.
GRAND PRIZE
2026 HARLEY-DAVIDSON
ROAD GLIDE | LIBERTY EDITION
PLUS
2019 FORD F-150 XL
