JE Pistons Standard 23 Degree Domed Forged Piston Set - SB Chevy - 420 C.I. - 4.155" Bore Size - 3.875" Stroke - 6.000" Rod Length SB51201 This design is effective against

This design is effective against header heat

2018-2018 Dodge Durango

bolt holes

For use with 3" lap belt

JE Pistons Standard 23 Degree Domed Forged Piston Set - SB Chevy - 420 C.I. - 4.155" Bore Size - 3.875" Stroke - 6.000" Rod Length SB51201 This design is effective againstThese high compression pistons are compatible with most aftermarket 23 heads and are ideal for drag racing and circle track applications. Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams. Precision CNC ring grooves are designed for 1 16, 1 16, 3 16 rings. Will not fit Pro Topline or Brodix 11X cylinder heads. Includes: Pin #927 2750 15 51S (130g) Double Spiro locks #927 042 CS Contact reduction grooves