Motorcycle Exhaust Muffler Tip 4cm Diameter 13.5cm Long. Suitable for scooter motorcycle and easy to install. Made of Metal material which is durable. This Exhaust Pipe can not only reduce exhaust noise also can release the exhaust gas safely and effectively. Gives your motorcycle a better air flow and performance. At the same time it is also a fashion decoration for your motorcycle or scooter. It has a good peformance stable characteristics and good reliability. A good replacement for older ones and very easy to install. Note: Variability of 1-3 cm is possible due to measurement process.