  SRMOTO PARTNER PRODUCT - Where To Buy: We no longer carry this product, but you can order it and other exhaust systems from one of our trusted partners/affiliates. If you make a purchase from them, we do receive a small portion of the sale, at no extra cost to you. Home > Dual Sport > Honda CRF250L Parts Home > Dual Sport > Honda CRF250L Rally Parts > Yoshimura RS-4 Slip-On Muffler Package Everything you need to unleash the full potential of your Honda CRF250L or CRF250L Rally! Our Yoshimura RS-4 Performance Slip-On Package starts out with Yoshimura's RS-4 Slip-On Muffler, featuring a turn-out end-cap, mid-pipe, and low-volume insert. This system re-uses your stock header pipe which connects to the Yoshi mid pipe. You can optionally add an EFI (electronic fuel injection) Controller, which is a plug-n-play device that will help take advantage of your new performance exhaust system and also make your bike run properly. Finally, you can also optionally add a heat shield for the muffler and also a 13 Tooth Front Sprocket and/or a Yoshimura Spark Arrestor Kit. The Yoshimura RS-4 Muffler is a unique design with predicated power and a quiet earthy exhaust note that speaks volumes for performance. This RS-4 features all the benefits of Yoshi's original RS-4 muffler, but with a unique turned-out end-cap, designed to direct exhaust heat and gases away from the bike's components. To top-it-off, they embossed the Yoshimura "347" logo in the carbon for a clean look. A heat-shield was also added to the poly-resonant chamber to keep rider and passenger legs from exhaust heat. With all its benefits in mind, the RS-4 was an obvious choice for the CRF250L. Fitment: 2017+ Honda CRF250L and Rally Weight Savings: CRF250L Stock Muffler w/ Heat Shield: 13.50 lbs CRF250L Yoshimura RS-4 Muffler w/ Heat Shield: 7.80 lbs TOTAL WEIGHT SAVINGS: 5.7 lbs PACKAGE INCLUDES THE FOLLOWING... ** OPTIONAL: EFI Controller (adds to package price): An EFI (Electronic Fuel Injection) Controller is HIGHLY recommended any time you install an aftermarket exhaust and/or air filter on your fuel injected bike, otherwise you will see little to no performance gains, and the bike may even run poorly. At this time, we offer two different EFI options, the EJK EFI Controller and the JD Jetting EFI Controller, or the Dynojet PowerCommander V. Details below. Each are simple to install and plug into existing wiring using stock connectors. ** OPTIONAL: Yoshimura Heat Shield (adds to package price): ** OPTIONAL: 13T Front Sprocket (adds to package price): |
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