Yoshimura 242930D320 RS-4 Signature Series Full System - Aluminum Muffler (Natural)

Marketing Color: Natural
Material: Aluminum

Stainless Steel Header/Aluminum Muffler/Carbon Fiber End Cap.

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. Titanium systems include non-spark-arrested 99 dB motocross insert (unless noted). Mufflers available with glossy carbon fiber, satin titanium or brushed aluminum sleeve. Stainless systems come with 94 dB insert installed (meets AMA competition requirements), 2 meter Max insert in the box.

Vehicle Fitment:

2019-2020 Kawasaki KX250
2017-2018 Kawasaki KX250F