SRAM Disc Brake Adapter - OE Packaged This SRAM Disc Brake Adapter is a crucial component for any post mount disc brake-equipped bike. This adapter allows you to use your post mount type disc brake caliper with a post mount frame, spacing out the caliper to fit your favorite brake rotor size. Note: this adapter ships as original equipment and may not include SRAM-branded packaging. Features OE Packaged this item comes shipped without SRAM-branded packaging Frame compatibility compatible with post mount equipped frames Various available sizes to appropriately space the brake caliper to accommodate larger rotors | Sram | Brake Adapter - Oe Packaged 20Mm Post 160/180