Big Block Chevy pistons forged dome top lightweight hollow dome forging; 4.505 bore ; 4.250 stroke ; 6.535 rod ; 1.120 compression height ; top ring groove 1/16 ; 2nd ring groove 1/16 ; oil ring groove 3/16 ; dome +43cc ; weight 568 grams ; high strength forged piston set for use in high performance and racing engines;. Set includes 8 forged pistons; 8 wrist pins; oil ring support rails when required and spiral locks. Highest quality and engineered for durability and maximum power output. Pistons are fully CNC machined and balanced to + / - 1 gram. Double pin oilers; pin fitting and pin lock removal grooves for easy lock removal are also included. Supplied with .990 x 2.930 wrist pins weighing 175 grams. Part number CP S5201
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