FMF Factory 4.1 RCT Slip-On Exhaust for 2018-19 Yamaha YZF450F - 044443 2009 Kawasaki KX85 (2) 10mm serrated flange hex

(2) 10mm serrated flange hex nuts

2014 Polaris Sportsman Forest 550

2001 Yamaha YFM250X Bear Tracker

(1) #122 Jet

2006 KTM 65 SX

FMF Factory 4.1 RCT Slip-On Exhaust for 2018-19 Yamaha YZF450F - 044443 2009 Kawasaki KX85 (2) 10mm serrated flange hexFMF Racing Factory 4. 1 RCT Slip On Muffler Part Number: 044443 Constructed from only aerospace grade materials that meets FMF exact specifications Shorter overall length is less susceptible to crash damage Shorter length design moves the muffler closer to the motor and improves centralize mass Greater canister volume helps reduce sound and increases packing life Race team tested and approved 100% Made in the USA Massive power gains throughout the RPM