FMF 4 Stroke Factory 4.1 RCT - Slip On Stock Item:*4.1 S/S Single CRF450R 17-20 Slip on w/carbon Cap FMF RM Stator's PeakRPM technology provides

RM Stator's PeakRPM technology provides a more aggressive timing curve for increased throttle response

LS2 liners are interchangeable for body size

The re-usable nano suction base ensures the Quad Lock® Desk Mount holds securely at all times and

Included in the box:

Tested to surpass waterproof rating of 20

FMF 4 Stroke Factory 4.1 RCT - Slip On Stock Item:*4.1 S/S Single CRF450R 17-20 Slip on w/carbon Cap FMF RM Stator's PeakRPM technology providesFACTORY 4. 1 RCT: Incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, FMF achieve a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering: moving the muffler closer to the motor to centralize mass. The Factory 4. 1 RCT silencer is constructed only from aerospace grade materials that meet FMF's exacting specifications and is