Yoshimura - RS-4 Pro Series/Competition Series Exhaust Systems
- The next evolution in Yoshimura exhaust, the RS-4 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 head pipe delivers optimal flow and performance
- Pro Series features a titanium header construction; Competition Series features stainless steel header construction
- Competition series mufflers include spark-arrested 96 dB insert
- 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
- 99 dB and 94 dB muffler inserts available separately
- Item Requires Shipping
- 73.0 lbs.
- W15.0000” x H8.0000” x L108.0000”
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