Yoshimura's Pro Series TRC system is constructed of a titanium header and midsection, followed by a very trick-looking carbon-fiber canister. It is fairly easy to mount, and the craftsmanship is a class leader. The complete system will set you back $795.
This exhaust really changes the power characteristics on the Yamaha YZ250F. It is all about bottom-end and extremely quick revving. The TRC system produces a ton of bottom-end; just turn the throttle and the power is there. This bottom-end carries over into a shot of midrange power that pulls hard into a high-revving top-end with a ton of overrev. During testing we noticed we didn't have to use as much clutch out of tight corners. The Yosh system worked really well on super-tight supercross-style tracks. Available at the crack of the throttle, the power is most noticeable in tight rhythm sections and through big whoops. Advanced riders will love what the Yoshimura exhaust has to offer.