Carrillo connecting rod for 2006 - 2014 Honda TRX450 For use ONLY with matching CP Project X Platinum series piston. WILL NOT WORK WITH STOCK SPEC PISTONS! Rod is 2.5mm longer than stock and uses a stock size wrist pin. Carrillo rods are far stronger than OEM stock conrods. These rods can be used as a direct replacement for the stock rods and offer improved performance in addition to much greater strength and durability.