SHAWNICE has independently designed and developed a motorcycle muffler with a beautiful appearance and durable materials. The outer layer is made of high-quality carbon fiber, which is resistant to high temperatures and friction. Our muffler size is 370 mm*110 mm, which is much larger than the size of the muffler sold in the market. The larger the size, the better the exhaust shock absorption effect, Can be compatible with more car models at an affordable price. If you are interested in this product, we invite you to join SHAWNICE! 100% brand new. The stainless steel welding adapter can adapt to pipe diameters ranging from 38 mm to 51 mm. It is a universal muffler that can be used on off-road vehicles, street motorcycles, scooters, four-wheel ATVs, and any other bicycle. Package: 1* Exhaust pipe 1* UDS DB Killer 1* UDS adapter 1* Clip and 1 rubber 2* Springs and hooks 1 Fastening screw Specifications: Material: Stainless steel Color: coated with CF titanium adhesive, coated with stainless steel, coated with titanium, coated with large carbon fiber, coated with carbon fiber Length: 370 mm (12.2 inches); Width: 105 mm (4.1 inches); Diameter: 51 mm (2 inches). Connection diameter: 51 mm (2 inches) We have a welding bracket for installing pipes with an outlet of 38-51 mm. Note: Loud sound: Remove the muffler Mute: Wear a muffler Installation instructions: 1. Pull out the exhaust pipe. Insert the transfer tube. 2. Install spring hooks on both sides for fixation. 3. Install exhaust pipe bracket protection 4. Unscrew the screws that secure the exhaust pipe bracket. 【Material】Aluminum & stainless steel, the body made of aluminum with stainless steel connector, removable DB killer, offers difference sound effect. 【Specification】Overall Length: 370mm,connection: 51mm slip-on type. 【Applicable models】Universal fits for street/sport motorcycles and scooters with 38-51mm diameter exhaust pipes. 【Good sound】Sounds deep sound, little throaty and not terrible loud.