FMF RACING - FACTORY 4.1 SLIP ON SILENCER - 045668 - BETA 20-26 430RR/480RRThe Factory 4. 1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, it achieves a shorter overall length that is less susceptible to crash damage and complementary to the Factory Forward Engineering moving the muffler closer to the motor to centralize mass. The Factory 4. 1 RCT is constructed from only aerospace grade materials that meet FMF's exacting specifications and is manufactured 100% at

The #1 choice for a no-nonsense

3- and 5-gallon sizes

and oversized alloy axles for strength

Since there is no material between the clamping screws

Pre-mix only for air-cooled/liquid-cooled 2T power-valve engines (not for methanol fuel)

13-14 CRF450R Stock Header

Without this

Fiberglass and Kevlar composites for super high impact strength

you get great performance

the vacuum valve is opened allowing air to get sucked in

Yoshimura introduces the latest RS-12 stainless steel system for the Honda CRF450R/RX

14-18 EN 250 2T