FMF Q4 Hex Slip-On Muffler CRF450R 2021-2023 041601 1821-2042 Progression Jacket Designs that fit either the

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

metal eyelets and contrast dipped drawcord tips

The Bolts are made from a proprietary material that is similar to an 8140 chromoly with increased tensile strength from

Almost every component of the Supertech R Boot

0 does not require modification to stock components

FMF Q4 Hex Slip-On Muffler CRF450R 2021-2023 041601 1821-2042 Progression Jacket Designs that fit either theLess 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.