Products 16 Sep 2020

Detailed: 2021 Honda CRF450R Yoshimura RS-12 exhaust systems

Titanium and stainless options developed in association with Team HRC.

Yoshimura has unveiled its new RS-12 exhaust system for the 2021 Honda CRF450R, which will be available in a durable stainless version or an ultra-light titanium system.

The RS-12 for the new Honda CRF450R (and also the RX variant) has been in development for over a year and no stone has been left unturned in the brand’s efforts to innovate and create the best exhaust system available.

Image: Supplied.

Developed and tested in collaboration with Team HRC, including MXGP world champion Tim Gajser, the RS-12 asymmetrical-shaped muffler allows maximum capacity and incorporates a resonance chamber for managing sound and increasing usable power. It also provides more clearance for the tire and brake caliper.

The tapered muffler body inlet design of the RS-12 enables the system to be pushed forward in the new Honda chassis, helping with weight centralization without sacrificing performance. A unique oval manifold design was created using FEA process (Finite Element Analysis) and has been produced using a state-of-the-art hydroforming process.

Just like the works systems that factory racers use, RS-12 systems utilize a precision machined joint, which provide a superior and exacting fit for joints by better securing the seal between two surfaces with a perfect 360 degree contact surface that translates into improved system life, fit and performance.

Image: Supplied.

In addition, a new patent pending Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arrestors. There is also a works-look matte carbon-fiber end-cap with industry-leading design, innovation and detailing as expected from Yoshimura.

Carbon end-cap covers the RS-12 inner-cap, improving looks, while providing easier service as compared to other sandwich mounting designs most commonly found in the industry. The 2021 Honda CRF450R Yoshimura RS-12 exhaust system has been proudly designed, developed and made in the USA!

The titanium full system is priced at MSRP $1199, the stainless full system is MSRP $899 and the stainless slip-on is MSRP $679. Visit for further information on the range.