Yoshimura RS-12 Stainless Full Exhaust System | Honda CRF250R Motocross | Carbon Fiber End Cap

The Yoshimura RS-12 Stainless Full Exhaust System is a complete header-back motocross exhaust for the Honda CRF250R, featuring the asymmetrical RS-12 muffler profile, precision-machined joints, a works-look matte carbon fiber end cap with decal inlays, a tapered muffler body inlet, and the patent-pending Precision Taper Fit (PTF) insert ring.

The RS-12 took over three years to develop with Yoshimura's factory-sponsored athletes, technicians and engineers, and it is visibly different from anything else in the class. The asymmetrical canister shape maximizes muffler volume — which is what manages sound and makes power — while providing extra clearance for the rear tire and brake caliper, the two contact points that destroy motocross mufflers.

The detail work is where the system separates itself: precision-machined joints rather than crimped slip fits, a carbon fiber end cap that mounts in a way that genuinely eases servicing compared with the sandwich-mount designs common elsewhere, and the PTF insert ring that makes sound inserts and spark arresters quick to change between a moto track and public land.

• Complete header-back full exhaust system for motocross use
• Asymmetrical RS-12 muffler profile for tire and brake caliper clearance
• Precision machined joints throughout the system
• Works-look matte carbon fiber end cap with decal inlays
• End cap design eases servicing versus sandwich-mount designs
• Patent-pending Precision Taper Fit (PTF) insert ring for sound inserts and spark arresters
• Tapered muffler body inlet design
• Yoshimura part number 961-1920
• Designed, developed and made in the USA

Built for Honda CRF250R motocross and off-road racing use. Fitment for this part number is confirmed for the 2022 CRF250R; because Yoshimura offers the RS-12 across several CRF250R model-year ranges and muffler materials, contact us with your exact year before ordering to be certain of the match.