How Wide Can You Go - This Rear Sprocket Spacer allows the installation of tires up to 142mm wide on 2000-2003 H-D FL models without any other modification to the motorcycle. This easy to install spacer fits between the rear rim and the rear belt sprocket and will allow the use of the Dunlop 142mm wide rear tire, the standard on all 2004 through 2006 FL Series motorcycles. There is no extra machining or parts needed to install. The use of the wider tire gives a larger contact area with the road surface that will help the motorcycle feel more stable in corners and increase stopping and starting performance. The 142mm Dunlop tire is also designed to give 35% longer tread life compared to the stock 130mm rear tire.