FMF Q4 Hex Slip-On Muffler CRF450R 2021-2023 041601 1821-2042 Progression Jacket RENTHAL Rear Sprocket - Aluminum

RENTHAL Rear Sprocket - Aluminum - 42 Tooth 404U-520-42P-HA

Designs that fit either the standard stock casings or the factory race kit alternator covers

Moose's non-grooved design means more aluminum stays in contact with the chain for longer sprocket life

In cooperation with several Yamaha teams and riders Twin Air has developed a new Airbox Kit for the Yamaha YZ250F/450FKit creates more open space within the airbox to optimize the airflow into the engine

0 does not require modification to stock components

FMF Q4 Hex Slip-On Muffler CRF450R 2021-2023 041601 1821-2042 Progression Jacket RENTHAL Rear Sprocket - AluminumLess sound equals more ground Meets FIM World Enduro sound regulations Power gains throughout the entire rpm range Spark arrestor included Pounds lighter than stock Rugged design for off road endurance Made in the U. S. A.