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The dual-muffler configuration on the redesigned 2013 CRF450R gave us the opportunity to create an entirely new muffler, specifically built for the CRF450R. We worked in secret with Top AMA Pro Riders: Jeremy McGrath, Justin Barcia, Trey Canard, Eli Tomac, and Justin Brayton, to achieve maximum performance, mass centralization, and optimize rider-usability. We were able to achieve all this, while keeping sound levels in check with AMA Regulation. The stock header flows seamlessly into our re-configured tail-pipe, where the exhausts gases are separated to each muffler. Yoshimura's vertical divider splits the exhaust gases more evenly compared to the stock horizontal divider, providing smoother flow which improves mid to top power and throttle response. Divided exhausts gases then reach our new, dual RS-9 mufflers. RS-9's parallelogram-shaped muffler body increases muffler volume over the stock system, resulting in better throttle response and improved noise cancellation. The dual setup enabled us to position the mufflers closer to the bike's center of gravity (mass centralization) resulting in better handling for the rider. An additional benefit of the mass centralization process was decreasing potential for muffler damage in the event of crash. RS-9 not only makes more power and torque possible, but does it more quietly than single systems. The uniquely sculpted Carbon Fiber end-caps feature a Tunable Insert System, able to fine-tune power delivery and decibel levels to rider specifications. Slip-On System features Dual RS-9 Aluminum Sleeved Mufflers with Carbon Fiber End-caps, Stainless Steel Tail-pipe, installation hardware, and detail step-by-step instructions.
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Yoshimura RS-9D Slip-On Muffler for CRF450R 13
$670.00
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