Yoshimura RS-12 Stainless Pipe System for Kawasaki KXF 250 2021-Current - Yoshimura Exhaust Systems
Yoshimura RS-12 adds lots of power to the new and improved 2021 249cc Kawasaki powerplant. More usable power and torque throughout almost the entire power curve. Max HP increase of 4.5% (at 12,000 rpm), max torque increase of 7.7% (at 6,700 rpm). POWER!
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 fibre end cap with decal inlays to the precisely machined joints, this system takes it to the next level.
Patent-pending Precision Taper Fit insert ring makes it easy to install and remove sound inserts. New style matt carbon end cap with foil decal inlays. Unique Hydroformed Finite Element Analysis designed oval manifold. RS-12: state of the art technology.
Yoshimura RS12 Stainless Exhaust Pipe System features & benefits:
- Aggressive, intelligently designed, asymmetrical shaped RS-12 profile allows maximized muffler volume that helps manage sound, add power and provide more clearance for tyre and brake caliper.
- Improved performance gains
- Just like the works systems our Factory Racers use, RS-12 systems utilize precision machined joints. Machined joints provide a superior and exacting fit for joints by better securing the seal between two surfaces with a perfect 360-degree contact surface which translates into improved system life, fit and performance.
- Works-look matte carbon fibre end cap with industry-leading design, innovation and detailing as expected from Yoshimura.
- Carbon end cap covers an inner cap mounted design improves durability and eases servicing as compared to other sandwich mounting designs most commonly found in the industry.
- New patent-pending Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arrestors.
- Tapered muffler body inlet design of RS-12 enables the system to be pushed forward thus helping with weight centralisation without sacrificing performance.
- Stainless steel header/mid-pipe
- Matte Carbon fibre end cap
- Aluminum muffler sleeve
- Installation hardware
- Detailed instructions
- 94db sound insert installed
- Click Here for the RS4 Instuctions from Yoshimura
Yoshimura Book of Speed iPhone/iPad App:

“2012 Book of Speed” works with iPhone®, iPad®, and iPod touch®. Requires iOS 4.0 or later.
Please note: These Exhausts are special order and can take upto 3-4 weeks from order date to delivery date. Special orders cannot be cancelled once processing. Exhaust picture shown is for illustration purposes only.