FMF Factory 4.1 Slip On Exhaust For Yamaha 044406 gutslogo KTM EXC 150 TPI Color:Dark Grey Red KTM EXC 150 TPI 2020 2021 2022 KTM EXC 250 TPI 2020 2021 2022 KTM EXC 300 TPI 2020 2021 2022 KTM EXC F 250 2020 2021 2022 KTM EXC F 350 2020 2021 2022 KTM EXC F 450 2020 2021 2022 KTM EXC F 500 2020 2021 2022 KTM XC W 150 TPI 2020 2021 2022 KTM XC W 250 TPI 2020 2021 2022 KTM XC W 300 TPI 2020 2021 2022 KTM XCF W 350 2020 2021 2022 KTM XCF W 500 2020 2021 2022 this fan kit is the perfect solution to keep your engine running cool and smooth 1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally 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