Shimano SM-MA90 F180P/P Brake Adaptor

Article code DBR126377
Shimano brake adaptor to mount a Shimano 180mm rotor to a 160mm direct mount fork.

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Shimano Disc Brake Adaptors are the finest disc brake adaptors available for Shimano disc brakes. Utilizing an extremely stiff aluminum construction, you will achieve your proper brake alignment and optimum function. This adaptor is for mounting a standard Post Mount caliper to a Post Mount fork to use a 180mm disc brake rotor. Use all Shimano brake components for the best braking performance.


  • Lightweight, Stiff Aluminum Construction
  • For Post Mount forks to Post-Mount Calipers and 180mm Rotor
  • Includes Lightweight Mounting Bolts and bolt safety wire
  • Brake Caliper Mount: 74mm Post
  • For Rotor Diameter: Front 180 mm
  • Frame/Fork Mount 74mm Post Mount
  • Caliper Type:74mm Post Mount
  • Rotor Size: 180 mm