Yoshimura Full System Kawasaki KX250F 2025 Rs-12 FS SS/SS/CF

Our new RS-12 for the 2025 KX250F comes with an INS-31-K sound insert installed. This insert not only produces an ear pleasing exhaust note, it also makes the best power for the new Kawasaki. Also available separately is an SA-21-K spark arrestor when venturing out into the woods is your jam.



Some of the features of the new RS-12 include:

Carbon Faced Machined Joint: Our new Carbon Faced Machined Joint no longer requires the use of anti-seize. This is accomplished by impregnating the surface of the stainless steel joint with carbon atoms. The result is a reduction in wear over the life of the joint by reducing friction.

Header Resonator: Our header resonator isn't just there for looks, it allows us to maximize power across the spectrum, while enhancing rider connectivity.



Proudly designed, developed and made in the USA!