MANLEY PLATINUM SERIES Standard Pistons, -18cc DISH [Bore Size 4.065 | Rod Length 6.125 | Stroke 3.622 | Comp Distance 1.304 | Pin Diam .927 | Piston Wt/Gms 445 | Valve Pocket Depth Int./Exh. .175 Trough] (GM LS1, LS6, LS2, L92 & LS3) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS