  Home > Dual Sport > Honda CRF300L > Yoshimura RS-4S Full Exhaust System (USED) USED PRODUCT INFO: This is a lightly used Yoshimura RS4S that we pulled off of our Honda CR300L project bike, so we could try a different exhaust. It is in like new condition and has maybe 300 miles on it. Photos above show the actual exhaust on our project bike that is for sale. It will come in the original Yoshimura box, and includes all mounting hardware and instructions. We only have ONE available at this price. PRODUCT DESCRIPTION: Yoshimura is proud to introduce the RS-4S full exhaust system for 2021+ Honda CRF300L and Rally dual-sport motorcycles. Yoshi stepped up to the plate and developed the RS-4 Full System for the all-new Honda CRF300L and Rally edition, and the results were fantastic! The full system gives the new CRF 5.9% max HP while improving the power across the entire spectrum enabling the 286cc engine to optimize performance while saving significant weight. The sound of the RS-4 is unmistakable, on idle and under load the exhaust note is music to ones ears. Proudly made in the USA! OPTIONAL: A USFS approved spark arrestor is available as an option for those riders wishing to take to the trails in the great outdoors. (Yoshi #SA-13-K-1) Fitment: 2021+ Honda CRF300L / CRF300LS / CRF300L Rally Specifications: Muffler Insert Options: Tuning: When installing an aftermarket exhaust on your CRF300L, we also recommend the bike be properly tuned, with either an ECU flash or an aftermarket Electronic Fuel Injection (EFI) controller, both of which will make the bike run properly with the aftermarket exhaust system. If you don't tune the bike, you will not see the full potential of your new exhaust. Plus, it may cause the bike to run poorly, and could also run hot, which is not good for the bike/exhaust over time. We currently offer the following tuning products for the CRF300L / Rally (click links below): ** NOTE: Will not fit 2025+ models, Honda changed the injector connector. INVENTORY STATUS: IN STOCK - We have ONE (1) of these used exhaust systems available at this price. Usually leaves warehouse in 1-3 business days. |
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