Valvetronic Designs - Mercedes Benz G Wagon 463A/464 Valved Sport Exhaust SystemWelcome to the perfect flexible experience and exhaust notes for the new G wagon. We designed this valve exhaust system to give an AMG GT R style sound with no compromises. With this exhaust, you turn your G into a snarling beast but keep the civilized nature for those long road trips. The system has been developed from the ground up to give an exceptional sound, a drone free experience, and the rawness you desire. It's time to take your G wagon to