Motorcycles Suzuki Control your bike's sound with just one button press. This integrated electric valve is designed to fit most exhaust systems (muffler/exhaust) with sizes 51mm, 60mm, and 63mm, giving you the freedom to switch between open and closed sound easily and at any time. Made from high-quality Grade 2.5 titanium, it can be directly welded onto exhaust and titanium systems, with a professional design that seamlessly integrates to maintain the original look of the vehicle with distinctive sporty performance and sound.