Swingarm sliders protect the swingarm, rear axle, and axle nut in a crash and slide. If you're wondering if axle sliders are necessary, consider that Suzuki started putting them on the DRZ as standard equipment in '07. More tracks are requiring them in order for you to race on them as well.
The most common type of swingarm slider is a combination spool/slider, but these are prone to failure. Either the relatively small bolts holding the spools on shear off or the tabs themselves tear off the swingarm when the spools hit the ground. RhinoMoto swingarm sliders fit inside the axle and are supported by the axle when impacted from straight on or from the side. The parts are CNC machined from solid polymer rod for superior strength, fit and finish. Features are machined into each part to allow them to fit over the axle and flush against the swingarm, avoiding that "skateboard wheel stuck on the end of the axle" look. This kit installs in less than one minute per side with only a 5mm key key. They remove just as quickly for maintenance and can be reinstalled virtually an unlimited number of times.
Kit 150-0005 includes 2 sliders with locking tapers, stainless steel hardware, installation instructions and 2 RhinoMoto logo stickers.