Features: 1.Make your vehicle look like a turbo vehicle with the turbo system or a shut-off valve. 2.Made of high quality material, has good corrosion resistance 3.After installation, it will enhance the hierarchy sense of your motorcycle, full of elegant style 4.Exquisite workmanship, stylish design, easy installation 5.Universal fit for motorcycles, ideal for motorcycle modification, a perfect replacement Specification: Features:_x000D_ 1. Make your vehicle look like a turbo vehicle with the turbo system or a shut-off valve._x000D_ 2. Made of high quality material, has good corrosion resistance._x000D_ 3. After installation, it will enhance the hierarchy sense of your motorcycle, full of elegant style._x000D_ 4. Exquisite workmanship, stylish design, easy installation._x000D_ 5. Universal fit for motorcycles, ideal for motorcycle modification, a perfect replacement._x000D_ _x000D_ Specification:_x000D_ Condition: 100% Brand New_x000D_ Color: Silver_x000D_ Material: CNC aluminium alloy_x000D_ Size: S, M, L, XL (optional)_x000D_ Fitment: Universal_x000D_ Size Tail Diameter Cylinder Capacity Length _x000D_ S 32-43cm / 12.6-16.9in 1000-1600cc 11cm / 4.3in _x000D_ M 37-48cm / 14.6-18.9in 1600-2000cc 11cm / 4.3in _x000D_ L 44-55cm / 17.3-21.7in 2000-2400cc 11cm / 4.3in _x000D_ XL 56-85cm / 22-33.5in 2400+cc 12cm / 4.7in _x000D_ _x000D_ _x000D_ 1. The general assembly of all models of vehicles does not meet the pipeline entrance of 2.5 inches or more._x000D_ 2. High quality light aluminum products_x000D_ 3. Make your car sound like a turbo engine turbo system or shut-off valve_x000D_ 4. 6061 T-6 aluminum CNC mechanization_x000D_ 5. "Admission for better results"_x000D_ 6. The installation is simple, you can install it in less than 2 minutes._x000D_ Package list:_x000D_ 1 x Turbo Sound Simulator Whistle_x000D_ 1 x Wrench_x000D_ 1 x Screw_x000D_ _x000D_ _x000D_ _x000D_ Note:_x000D_ The inner diameter of the L size is 27mm PackageList: