- Machined aluminum muffler brackets for increased strength and durability
- Asymmetrical muffler configuration for increased packing volume
- Most systems equipped with a RC-4 Resonance Chamber for reduced sound output
- Machined mid pipe to headpipe joint for a better, leak-free fit
- TIG precision welding
- Made in the U.S.A.
- FITS - 2020-2022 Yamaha YZ 450 F