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Yoshimura RS-12 Exhaust System Honda CRF450R / WE / R-S / CRF450RXYoshimura announces the latest RS-12 stainless steel system for the 2021-24 Honda CRF450R/RX.Yoshimura engineers wanted to get the best most usable power from the new model. This system incorporates a one-piece stainless steel cast manifold featuring an integrated bolt flange surface that is 3x stronger than conventional designs.By increasing the resonator in the RS-12 muffler by 50cc (a 14% increase) and adding a second resonator...

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