FMF Factory 4.1 Muffler CRF450R 2021-2024 041603 1821-2044 Stella Dyno v2 Jacket Include a resealable bag for

Include a resealable bag for added convenience

the entire system is designed not to turn blue for the life of the product so with a bit of care it will still look like new years later

This jacket is built to accept the Tech-Air Street Airbag System

Made from cast aluminum

TorqDrive® provides more clutch discs in less space

FMF Factory 4.1 Muffler CRF450R 2021-2024 041603 1821-2044 Stella Dyno v2 Jacket Include a resealable bag forThe lightest mufflers available Superior power and performance horsepower improved throughout the rpm range Feature exclusive proprietary Chamber Core technology Factory Forward Engineering centralizes mass, improves handling Made from premium quality American materials Customize with performance tuning inserts and spark arrestor module Meet AMA sound requirements on most models; inserts available for others