Features:
- SM-MA90 series brackets are specifically designed for the new generation XTR-M985/988 disc brakes but can be used on all Shimano 74mm-caliper brakes
- These new adaptors are lighter, optimally machined, and even have areas drilled out to save weight
- Shimano Adapters are listed by: Rotor Size / Caliper Mount / Front or Rear / Bike Mount Tab / Mfg Part Number
Specifications:
- Rotor Size = 180mm
- Caliper mount drill = 74mm
- Bike location = Front
- Mount on bike or fork = 51mm IS
- Shimano’s part number = SM-MA-F160P/S





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