Description: Fitment: for Kawasaki ER6N Hardware and installation instructions no included Full stainless steel body,excellent welding finish Offers difference flow and sound effect Motorcycle middle connecting pipe Specification: Size(L*W): 145*55mm/5.7*2.2inch Inner diameter: 51MM/2 inch Package Includes: 1 Piece Motorcycle Exhaust Middle Pipe Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2.Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.There are no instructions included in this kit. Professional Installation Is Highly Recommended?