OEM seat compatible - Fender is symmetrical & for use with OEM frame and swingarm - Steel fender with approval - Fender struts that are welded to the inside of the fender for a smooth result - Manufactured with a BK Stiletto fender as base - The 'Inside Width' size is the distance between the left & right inside of the fender (strut) Note: Fenders are designed to fit OEM frames. Due to manufacturing tolerances slight modifications may be required. Fitment checks advised.