I went to Perris Raceway and tried Steve’s Pro Circuit Ti-6 muffler system w/ that RED carbon end cap! The updated Pro Circuit Ti-6 Titanium Exhaust System for the 2026 YZ450F is constructed of titanium throughout the head pipe, mid pipe, and canister while the end-cap is carbon fiber. Oh and you can be like … Continue reading Steve’s Pro Circuit Ti-6 Pro Circuit Muffler Review