LIGHTWEIGHT ALUMINUM ALLOY SPACERS HOLE SPACING 4/136 ALUMINUM SPACERS THICKNESS 30mm HOLE SPACING 4/136 WIDEN THE AXLE BY 60mm SET FOR ONE AXLE NO STUDS BREAK OFF IN THIS MODEL Can Am Bombardier: all cruise models, KAWASAKI: KLF 300 400 Bayou, Praire 300,360,400,650,700 Brute Force KVF 650 03-07 (rigid axle at the rear) Wheel spacers are designed to increase the width of the vehicle and the safety of users. These spacers allow for the installation of a larger tire (no tire rubbing against the shock absorber, wheel arch or muffler). The extensions are very durable, made of 6061 aircraft aluminum. Even with larger tires and extreme use, there is no phenomenon of pins breaking off and spacer cracking. Spacers are equipped with nuts for screwing the spacer to the hub. The holes for the pins are so precisely fitted that there is no phenomenon of the spacer moving on the hub pins.