FMF Factory 4.1 RCT Dual Mufflers - Blue Anodized CRF250R/X 2018-2021 041589 1821-1994 Vika v2 Waterproof Women's Boots High Load Fuel Maps (PC5

High Load Fuel Maps (PC5 map importing)

5p Aluminum bung plug washer works with any 18mm O2 sensor bung plug

Offers the "factory" look and appearance while reducing weight

Hardware included

The very wide feet and the knurled surface prevent any swaying

FMF Factory 4.1 RCT Dual Mufflers - Blue Anodized CRF250R/X 2018-2021 041589 1821-1994 Vika v2 Waterproof Women's Boots High Load Fuel Maps (PC5The Factory 4. 1 RCT incorporates FMF Resonance Chamber Technology both internally and externally In addition, FMF achieves 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 is constructed from only aerospace grade materials that meet FMF's exacting specifications and is manufactured 100% at their