Used to upgrade from the stock caliper to a 108mm radial caliper on the rear of your Touring bike. Looks great and will compliment any bike''s style. Allows fitment of 108mm style aftermarket radial calipers and will allow up to a 300mm rotor size. - Will replace the stock 44089-08 caliper bracket - For standard 25mm axle diameter - For most 108mm radial aftermarket calipers - M10-1.25 threaded - Up to 300mm brake rotor - Black anodized CNC machined billet aluminum. Note: Caliper spacers may be required to space off your caliper to the appropriate height; depending on your rotor size. Note: See 706032 (left) and 706033 (right) for Kraus RT3 108mm radial calipers. See 706034 (left) and 706035 (right) for Kraus RTX8 108mm radial calipers.