Description
Yoshimura RS4S Race Full System Exhaust For CRF300L - 123410D520
- Pentagonal-shaped muffler
- Maximized internal volume
- Polyresonant duplex front chamber
- Stepped, two-stage core baffle
- Spark Arrestor/Sound Insert Compatible
Fits
21-25 CRF300L/CRF300L Rally
Weight: 9.5 lbs (compared to the stock full system weight of 12.3 lbs — a savings of 2.8 lbs / approx. 22%)
Performance Gain: Up to 5.9% maximum horsepower boost, with improved power delivery across the entire RPM spectrum for the 286cc engine.
Materials: Stainless steel header and tail-pipe, pentagonal-shaped stainless steel muffler sleeve, and turn-out carbon fiber end-cap.
Design Features:
- Front muffler cap functions as a poly-resonant chamber to help reduce noise.
- Two-stage stepped baffle.
- Removable low-volume / sound insert