FMF Factory 4.1 RCT Exhaust System Yamaha WR / YZ 450 23-26

Features:

• Incorporates FMF Resonance Chamber Technology™ both internally and externally
• Shorter overall length that is less susceptible to crash damage and complementary to Factory Forward Engineering, moving the muffler closer to the motor to centralize mass
• Constructed from only aerospace grade materials that meet exacting specifications and is manufactured 100% at the southern California factory
• Spark arrestor screen insert included
• 94dB insert included
• For closed course competition only
• NOTE: Will not pass 2025 FIM sound regulation

Fit the models: