Description
The SRAM Flat Mount Disc Brake Adapter allows riders to properly position a flat mount brake caliper when using different rotor sizes. This adapter supports both 140mm and 160mm rotor configurations and includes stainless mounting hardware for installation.
The adapter can be rotated 180 degrees to switch between rotor sizes, making it a simple and versatile solution for modern flat mount disc brake road bikes and gravel bikes.
Key Functional Details
- Compatible rotor sizes: 140mm and 160mm
- Mount type: Flat mount
- Frame mount: Flat mount
- Caliper mount: Flat mount
- Adapter size: 20mm
- Material: Aluminum adapter with stainless steel hardware
- Color: Black
- Includes mounting bolts
- Platform Type: Road / Gravel Disc Brakes
Compatibility & Technical Notes
- Designed for flat mount brake systems
- Compatible with SRAM flat mount disc brake calipers
- Typically used on road and gravel bike frames
- Allows switching between 140mm and 160mm rotor sizes
- Adapter orientation determines rotor size compatibility
- Not compatible with post mount brake systems
- Platform Type: Flat mount disc brake bikes
Service / Ownership Context
This adapter is commonly used when upgrading rotor sizes or replacing worn brake hardware on flat mount road and gravel bikes. The reversible design simplifies installation and allows mechanics to configure brake setups without needing separate adapters for each rotor size.
Fit & Use Signals
- Good Fit: Your bike uses flat mount disc brakes.
- Good Fit: Your brake system uses 140mm or 160mm rotors.
- Good Fit: Road or gravel bike disc brake setups.
- Not A Fit: Post mount disc brake systems.
- Not A Fit: Mountain bikes using post mount calipers.
- Not A Fit: Mechanical rim brake systems.
This adapter is common on flat mount road bikes when switching between 140mm and 160mm rear rotors. Customers often get confused between flat mount and post mount adapters. This one is flat mount only. Orientation of the adapter determines the rotor size. Mechanics flip it 180 degrees to change from 140 to 160. Frequently used on SRAM road groupsets but works with most flat mount calipers that follow the same mounting standard. Always torque bolts correctly and use thread locker if recommended by the manufacturer.
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