PISTONS DESIGN Advanced, lightweight FSR forging that eliminates stress concentrations for superior strength Up to 20% lighter than traditional equivalent High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation Accumulator grooves for improved ring seal Designed for normally aspirated or moderate forced induction/nitrous applications Part# 271105 is compatible with GM L92 Cylinder Heads

RINGS INCLUDED Lightweight, low friction metric ring package included 1.2mm top ring, 1.5mm Napier 2nd ring, 3.0mm standard tension oil ring Napier 2nd ring for improved oil control Standard fit rings, no filing required PINS AND LOCKS High quality 2.250" pin further reduces reciprocating weight Carbon steel wire locks included