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Yoshimura Race Series RS-4 Exhaust Systems

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Yoshimura's Race Series RS-4 exhaust systems are designed with nothing but power in mind! Each Race Series system is developed in accordance with noise compliance r

Yoshimura's Race Series RS-4 exhaust systems are designed with nothing but power in mind! Each Race Series system is developed in accordance with noise compliance regulations imposed by most racing sanctioning bodies worldwide. The RS-4's unique design provides an unrivaled combination of power, along with a quiet exhaust note. These systems remove a good amount of weight from the stock unit. They also feature a polyresonant duplex chamber, a two-staged stepped baffle, and an innovative carbon cone end cap. If you're looking for that competitive edge, get and install one of these Race Series RS-4 exhaust systems from

Yoshimura's Race Series RS-4 exhaust systems are designed with nothing but power in mind! Each Race Series system is developed in accordance with noise compliance regulations imposed by most racing sanctioning bodies worldwide. The RS-4's unique design provides an unrivaled combination of power, along with a quiet exhaust note. These systems remove a good amount of weight from the stock unit. They also feature a polyresonant duplex chamber, a two-staged stepped baffle, and an innovative carbon cone end cap. If you're looking for that competitive edge, get and install one of these Race Series RS-4 exhaust systems from Yoshimura—they come out a winner in both looks and performance!

Key features and benefits:

* Pentagonal-shaped muffler sleeve and aluminum mount bracket
* Front muffler cap functions as a polyresonant chamber which helps reduce noise
* Two-stage stepped baffle
* Durable high-grade stainless steel tapered header and mid-pipe
* Considerable weight reduction
* Carbon fiber end-cap comes with a U.S.F.S.-approved spark arrested insert installed in muffler (on most, but not all models)
* All applications are marked with appropriate EPA noise emissions labels
* Step-by-step directions and all necessary hardware included for an easy installation
* For closed course competition only; not intended for street use; this system has not been tested for EPA noise compliance

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