Yoshimura Rs-2 Exhaust System Yamaha Wr125R The Yoshimura Rs-2 full race exhaust system is a potent and versatile pipe that was engineered to provide useful power gains throughout the entire RPM range. The pyramidal shape of the canister offers increased durability and allows for greater packing volume which lowers sound levels. This full system adds torque and horsepower to the 125cc trail fighter while removing the unwanted weight of the under-performing stock system. Features: Diamond-shaped sleeve Stainless steel header Large core and increased muffler packing volume means quieter operation CNC machined mounting bracket Made in the USA