Yoshimura CRF250R 20-21 / RX RS-9T Stainless Slip-On Exhaust, w/ Dual Stainless MufflersYoshimura CRF250R 20 21 RX RS 9T Stainless Slip On Exhaust, w Dual Stainless Mufflers The Honda CRF250R has been refined even more for 2020, and now incorporates a new slip on configuration. Known for excellence in sound and performance, our RS 9T Signature Series dual slip on system provides great addition of HP and torque between 6 9,000 RPM range adding 10% max HP and 8. 3% max torque. Optional SA 14 K spark arrester kit is available when it's time