Factory 4.1 RCT Aluminum Full Muffler System for YAMAHA YZ450F 2014-2017

FMF Factory 4.1 RCT Aluminum Full Muffler System for YAMAHA YZ450F 2014-2017

Massive power gains throughout the RPM range

FMF uses the highest quality proprietary blend of alloy titanium made especially to our standards. Quieter than stock. Huge weight savings.

RTS (Rapid Tuning System) makes for easy sound insert changes as well as adding US Forestry-approved Spark Arrestor.

Can be used with FMF header or stock

Carbon fiber end cap

Includes Stainless Steel Megabomb header