Yoshimura Japan Full System Metal Magic cover Exhaust For Honda CRF 250L/M/RALLY 2017 #180-42E-5L20
Yoshimura has used the World Superbike platform to develop the R-11 high-performance motorcycle silencer. The R-11 silencer has been developed with extreme use in mind, so inevitably they felt the best proving ground they could use would be the cut and thrust competition of World SBK!
The RS-4J is based on the RS-4 silencer designed by Yoshimura R&D of America. Yoshimura Japan has redeveloped this to optimize the power and sound levels.
This full system provides maximum weight saving compared to the stock silencer whilst improving bhp and torque levels.
Pentagonal-shaped sleeve | Front muffler cap functions as a polyresonant chamber to reduce noise | Turn-out carbon fiber end-cap | Stainless header pipe.
Metal Magic cover
Main Material Stainless steel
Static Noise Decibel: dB/
Measured at: rpm 94.0dB/4,250rpm
Parts No 180-42E-5L20
Weight（STD7.0kg） 4.1kg
Fitment:
- Honda CRF 250L 2017
- Honda CRF 250M 2017
- Honda CRF 250 Rally 2017