MANLEY PLATINUM SERIES Lightweight Pistons, -11.5cc DISH [Bore Size 4.065 | Rod Length 6.240 | Stroke 3.579/90.9mm | Compression Distance 1.220 | Pin Diameter .927 | 74cc 9.03 | Pistons Wt/Gms 429 | Piston & Pin Wt/Gms 539] (CHRYSLER 6.1L HEMI) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS