BBC pistons reverse dome; big bore forged piston set; 4.505 bore ; 4.250 stroke ; 6.385 rod ; 1.270 compression height ; top ring groove 1/16 ; 2nd ring groove 1/16 ; oil ring groove 3/16 ; dome and VR displacement -17cc ; weight 615 grams ; high strength forged piston set for use in high performance and racing engines; suitable for use with NOS; superchargers or turbo; 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 S5111
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