Features: 1. Applicable model: Crescent exhaust muffler pipe, suitable for 2-stroke 49cc 60cc 66cc 80cc engine motorized bicycles motorcycles. 2. Multifunctional exhaust muffler pipe: This muffler tip can not only reduce exhaust noise, but also discharge exhaust gas safely and efficiently. 3. Dimensions: Inlet diameter is approximately 18 mm/0.71 inches; Outlet diameter is approximately 10 mm/0.39 inches; Hole spacing is approximately 40 mm/1.58 inches. 4. Premium material: High-strength steel alloy construction for maximum durability and will not rust or crack, better performance. 5. Good replacement: Durable and long service life. A perfect spare part. Easy to install and uninstall without complicated operations. Specification: Item Type: Exhaust Muffler Pipe Material: Steel Alloy Color: Silver Inlet Diameter: Approx. 18 mm/0.71 inches Outlet Diameter: Approx. 10 mm/0.39 inches Hole Spacing: Approx. 40 mm/1.58 inches Fitment: Fits for 2-stroke 49cc 60cc 66cc 80cc engines motorized bicycles motorcycles Package List: 1 x Exhaust Muffler