Valvetronic Design Valvetronic Motorcycle Valved MufflerIntroducing the world's first valved muffler for motorcycles by Valvetronic Designs We have conquered the automotive exhaust market with our valved, full exhaust systems, and our universal valve, mufflers for cars and trucks, but we had our sights on a new challenge, a challenge that would give the power back to so many riders. Introducing the ultimate in motorcycle exhaust technology: our Valved Exhaust Muffler, engineered to deliver unrivaled