SRAM Post Mount 20mm Disc Brake Spacers
Depending on what size rotor you use, and what your frame/fork mount is, you will need a brake adapter to properly space your disc brake caliper. Includes CPS and Standard Hardware
For example, if your fork has a Post Mount 160mm, and you want to use a 180mm rotor, you would need 20mm worth of spacers.
Mount | Rotor Size: 160 Post | 180 Rotor , 140 Post | 160 Rotor , 180 Post | 200 Rotor