CRF's Only CRF250L RS-4 Performance Package
Includes the following tested components for bolt-on performance:
- Yoshimura RS-4 Full System
- EJK Electronic Fuel Control Module
- Optional 13T Front Sprocket
The Yoshimura RS-4 is a functional work of art increasing exhaust flow and engine performance. Full System includes an RS-4 muffler with turn-out end-cap, stainless steel header and tail-pipe, low-volume insert, all installation hardware, and step-by-step instructions.
NOTE: The EJK can not be shipped to California addresses.