Yoshimura - RS-4 Pro Series Series/Competition Series Exhaust Systems
- Delivers huge power at a very light weight
- Offers better handling thanks to a lower centralized mass coefficient
- Uniquely-styled pentagonal muffler body with a carbon fiber cone end cap
- Front cap design functions as a polyresonant chamber to lower dB output while improving mid- to top-end power
- Two-staged, stepped baffle
- Tapered headpipe delivers optimal flow and performance
- Pro Series features titanium header construction; Competition Series features stainless steel header construction
- Pro Series mufflers include non-spark-arrested 99 dB motocross insert (unless noted)
- Mufflers available with glossy carbon fiber, satin titanium or brushed aluminum sleeve
- Systems come with 96 dB insert installed (meets AMA competition requirements), 2 meter Max insert in the box
- Item Requires Shipping
- 12.3 lbs.
- W10.0000” x H10.0000” x L36.0000”
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