We considered all the details when it came to the RS-12. One look and you can see it's like nothing else on the market. As you get closer you will notice the details in every place on our new dirt bike system, from the matte carbon fiber end cap with decal inlays to the precise machined joints, this system is next level.

1. Developed and tested in the heat of over 24 months of factory level racing
2. Aggressive, asymmetrical shaped RS-12 profile maximizes muffler volume, manages sound, adds power and provides more clearance for tire and brake caliper.
3. RS-12 systems utilize precision machined joints.
4. Aggressive, intelligently designed, asymmetrical shaped RS-12 profile allows maximized muffler volume that helps manage sound, add power and provide more clearance for tire and brake caliper
5. Works-look matte carbon fiber end cap with intricate details.
6. Improved performance gains, weight reduction and fit when compared to previous generation design
7. New carbon fiber cap eases servicing as compared to other sandwich mounting designs most commonly found in the industry.
8. New patent pending Precision Taper Fit (PTF) insert ring
9. Works-look matte carbon fiber end cap with industry leading design and innovation end cap detailing as expected from Yoshimura
10. Carbon end cap covers inner cap mounted design improves durability, and eases servicing as compared to other sandwich mounting designs most commonly found in the industry
11. Tapered muffler body inlet design.
12. New patent pending Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arrestors
13. Tapered muffler body inlet design of RS-12 enables the system to be pushed forward thus helping with weight centralization without sacrificing performance
14. Proudly designed, developed and made in the USA!
15. Yoshimura Full system weight 8.5 lbs. vs Stock Weight 8.7lbs
16. Repack Kits, optional Inserts and Spark Arresters are available for all models

Dimensions
W 10in * H 10in * L 39in
Weight: 13lbs