Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
Description
Piston, F.S.R. Tour Series GP, Forged, 4.045 in Bore, 0.0436 in x 0.044 in x 3.0 mm Ring Grooves, Minus 4.10 cc, compatible with Small Block Chevy, Set of 8