2618 high strength material; Lightweight design with offset wrist pin for quiet start-ups.150" x 2.250" wall Premium Chrome Moly pin (Standard Series) included P/N 42248-8.2cc dish provides 9.5:1 compressionPressure balance grooveWill accommodate +1mm valve sizesPremium Steel top ring sets and round wire locks includedRecommended piston clearance: .0030" measured 1.100" from the bottom of the oil ring
