CP Pistons brand 2007 and newer models Harley Twin Cam 103ci Big Bore forged piston kit. For use in street; high performance and racing engines; for use with a 3.875 in. standard size 103 big bore and stock stroke of 4.375 in. 10-1 compression; kit includes 1 piston; 1 piston pin; piston rings and pin lock rings. Order a quantity of 2 for complete engine rebuild.
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