Shimano XTR Disc Brake Adapter (180mm Rear) (IS Mount) - ISMMA90R180PS
Shimano XTR Disc Brake Adapter (180mm Rear) (IS Mount) - ISMMA90R180PS, Shimano Disc Brake Adaptor Features: For 74mm caliper on 51mm frame, using 180mm rotor Includes mounting hardware Specifications: Brake Caliper Mount Type: Post Mount (74mm) Mount | Rotor Size: Rear IS | 180mm Rotor