HD Billet aluminum drive coupler set for the Kawasaki 800SXR. This is for high horsepower setups that are blowing out the standard rubber dampers. These have a larger 4.34 inch diameter that use the 15F/260X rubber damper. The threads are the standard 20-1.5mm that fits the SXR crankshaft and drive shaft. These are sold as a set and they are clear anodized.