Shimano SM-MA-R160D/D Disc Brake Adaptor for 160mm Rotor, Flat-Mount Caliper, Flat-Mount Frame

Shimano SM-MA-R160D/D Disc Brake Adapter — 160 mm Rotor, Flat-Mount Rear

Take your braking performance up a notch with the Shimano SM-MA-R160D/D adapter. Designed to let a flat-mount brake caliper work with a 160 mm disc rotor on frames originally set up for a 140 mm rotor, this precision-machined aluminum adapter includes the required mounting hardware and fits seamlessly into Shimano’s flat-mount brake system. Whether you’re upgrading for better heat management, stronger stopping power, or enhanced modulation on road, gravel, or cyclocross rides, this adapter is the simple solution to make your setup compatible and more capable.

Technical Specs

• Mount Type: Flat Mount Caliper to Flat Mount Frame
• Intended Rotor Size: 160 mm Rear
• Material: Aluminum adapter, steel mounting hardware
• Compatibility: Works with Shimano flat-mount calipers designed around 140 mm rotors (including many road and gravel models).