YOSHIMURA RS-4D EXHAUST SYSTEMS AND SLIP-ON MUFFLERS EXHAUST RS4D TI/TI CRF450

MFPN:225801E721

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Every Yoshimura exhaust product is made by hand to the highest quality standards

Championship-winning racetrack experience and Yoshimura's extensive R&D facility ensure these pipes perform

This dedication to research and development is only matched by Yoshimura's dedication to uncompromising quality standards

True performance art for your motorcycle

All Signature series exhaust are tested, documented and marked with appropriate EPA noise emissions labels

Do not require changing the motorcycle's emissions control systems

CARB and EPA emissions "Replacement Parts"

Certified by independent laboratory for EPA noise levels

Deliver performance in a slip-on/bolt-on muffler package

Do not require changing the motorcycle's emissions control systems

Marked with appropriate EPA noise emissions labels

CARB and EPA emissions "Replacement Parts"

Not tested for EPA noise levels

Designed for closed-course competition use only; not for street use

Meet noise level regulations of most worldwide race sanctioning organizations

Marked with appropriate EPA noise emissions labels

Not tested for EPA noise levels

An evolution of Yoshimura’s off-road exhaust system

Equipped with USFS-approved spark arrestors, forest-friendly noise levels and are tailpipeemissions compliant

Marked with appropriate EPA noise emissions labels

Not tested for EPA noise levels

Championship-winning exhaust system from Yoshimura

Dual internal baffle design increases exhaust outflow for improved throttle control and smoother power delivery

Boosts horsepower throughout the power curve, especially at the low- and mid-range rpms where riders and racers need it the most

Full titanium header pipe

Muffler sleeve is glossy carbon fiber or titanium with dual-outlet carbon fiber end cap

Titanium muffler has AMA-legal sound inserts installed

All necessary hardware for installation included

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