RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
FMF’s Factory Forward Engineering centralizes mass and is less prone to crash damage
Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
Compatible with stock header or FMF header
Meet AMA and FIM sound requirements
QuietCore 94db insert included
Spark arrestor included in muffler
Available in natural titanium or blue anodized finish with titanium or carbon fiber end caps
Made in the U.S.A.
Note: P/Ns 1821-1063, 1821-1065, 1821-1085L no spark arrestor included.
Note: P/Ns 1821-1599, 1821-1600, 1821-1601, 1821-1541, 1821-1542, 1821-1543 include left‑side rear number plate by UFO, designed for use with a single muffle, PART #0520‑1300 (also available separately).
