CP Pistons brand 2007 - 2013 Honda CRF150R forged piston kit. For use in high performance and racing engines; for use with a +2mm oversize big bore of 68mm; and stock stroke of 43.7mm; 158cc; 13.0-1 compression ratio; use with flat head or stock concave head valves; compression slightly lower if used with concave valves; kit includes light weight piston; light weight piston pin; piston rings and pin lock rings.
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