18-'22 for Yamaha YZ450F FMF Q4 Hex S/A Yz450F Option: Stage I w/ Synthetic

Option: Stage I w/ Synthetic Filter-Black

Billet aluminum ends and rings

Includes conversion camshafts that updates your old mechanical style cams and tensioners to the new hydraulic tensioner system

Each handlebar includes an updated injection molded foam bar pad for better protection and greater durability

18-'22 for Yamaha YZ450F FMF Q4 Hex S/A Yz450F Option: Stage I w/ SyntheticManufacturer: FMF Racing MPN: 44442 Title: The Q Series Hex Spark Arrestor Muffler Size: Option: Color: Incorporates internal baffles, chambers and space age sound absorbing materials to accelerate exhaust flow with less noise and minimal power loss Well under the 96db sound output on most machines to satisfy strict sound requirements U. S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen DISCLAIMER: Not