Lewis Flat Mount Road Bike Caliper Adapter

Lewis FM-F Adapter – Flat Mount to Flat Mount

Lightweight, strong, and built for precision, the Lewis FM-F Adapter makes it easy to fine-tune your flat-mount brake setup. Machined from premium 7075-T6 aluminum using integrated CNC cutting, this 10g adapter delivers maximum stiffness with minimal weight.

Option to run both the Ф+0 and Ф+20 specifications, the FM-F Adapter gives you the flexibility to run your brakes exactly how you want:

• FM-F Ф+0 → Standard adapter. Rotor diameter remains unchanged.

• FM-F Ф+20 → Adds +20mm to your rotor size. Example: a frame/fork designed for 140mm rotors can run 160mm.

Whether you’re chasing lighter weight, better heat management, or more braking power, the FM-F adapter keeps your system dialed and race-ready.

Key Features:

• Material: 7075-T6 aluminum

• Processing: Integrated CNC cutting

• Mounting Seat: 70mm (FM-F specification)

• Specifications: Ф+0 and Ф+20 options

• Weight: Just 10g

• Colors: Black, Gunsmoke, Purple, Orange, Gold, Pink

• Application: Road, gravel, and performance bikes