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Grand National Cross Country (GNCC)
48 inch pounds works best for motocross bikes from 85cc on up
with durability and longevity
dished flange-head bolts replace the button head Allen bolts of the old design
Multi-directional Impact Protection System (MIPS)
FMF Factory 4.1 Slip-On Muffler Yamaha WR450F '20 | 044464 CF-Moto Grand National Cross Country (GNCC)The Factory 4. 1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our 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 our exacting specifications and is manufactured 100% at
