Features: Specification: Length: 250mm/9.84in; Diameter: 32mm / 1.26in(as picture shows); Width: 86mm/33.8in. Installation: No installation instruction included, professional installation is highly recommend. Package Included: 1 set of Muffler Exhaust Accessories Kit(as pictures shows). Attention: before purchase, please check the outer diameter of the exhaust end is 32mm.