YOSHIMURA YOSHIMURA RS-12 Signature Series Full Exhaust System

The 2025 Honda CRF450R is here and has undergone significant changes to the overall package. Hunter Lawrence found the changes so inspiring that led him to compete with the new machine in the last three rounds of AMA Pro Motocross. The newest CRF450R boasts an all-new new chassis, airbox and ECU configuration. Our engineering and development team has had their nose to the grindstone with Team Honda HRC to squeeze every drop of performance out of the new 450. With our new RS-12 Signature Series full system, we achieved a max HP gain of 3.7% over stock while the max torque gain came in at 1.3%. Some of the features on the 2025 CRF450R/RX RS-12: Hydroformed Muffler This is the first of a new generation RS-12 profile exhaust system featuring weight reducing hydroformed technology. This technology allows to maximize available space for a tailored fit while minimizing material usage. Hydroforming removes many of the limitations of conventional metal forming methods allowing for a stronger an