Yoshimura TRC Carbon Fiber Tri-Oval Complete Exhaust System - Yamaha Zuma 125 2009-2010 If you're looking for serious performance, you came to the right place. The TRC is a race-proven exhaust featuring a tri-oval design, trick cone-shaped end cap and an easily removable low-volume insert. The TRC has a straight baffle leading to that distinct cone-shaped end cap. The TRC also comes with a laser-etched heel guard that combines style and function. Tri-oval shaped sleeve.