SRAM 20mm Flat Mount Disc Brake Adaptor - Fits 160mm Rear Rotors

SRAM 20mm Flat Mount Disc Brake Adaptor - Fits 160mm Rear Rotors SRAM

SRAM 20mm Flat Mount Disc Brake Adaptor - Fits 160mm Rear Rotors

SRAM 20mm Flat Mount Disc Brake Adaptor - Fits 160mm Rear Rotors

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What does the SRAM 20mm Flat Mount Disc Brake Adaptor do?

The SRAM 20mm Flat Mount Disc Brake Adaptor is used to mount a flat mount caliper on frames and forks that require a 20mm offset, specifically to fit a 160mm rotor on a rear flat mount frame that is designed for 140mm. This adaptor shifts the caliper position to accommodate the larger rotor without requiring a post mount adaptor. It's a clean, low-profile solution for upgrading rotor size on flat mount road and gravel bikes.

Before ordering, confirm that your frame and fork can accept a 160mm rear rotor and that a 20mm flat mount adaptor is the correct fitment for your specific setup. Refer to your frame manufacturer's specifications for minimum and maximum rotor sizes and adaptor requirements.

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Specifications

  • Type: Flat mount adapter
  • Offset: 20mm
  • Use: Fits 160mm rotor on rear flat mount frame designed for 140mm
  • Application: Road, gravel

FAQ

What does a 20mm flat mount adapter do?

The 20mm offset shifts the caliper outward, moving it from a position centered on a 140mm rotor to one centered on a 160mm rotor. This allows a 160mm rotor to be used on a frame or fork designed for 140mm.

Is this adapter for front or rear use?

Rear only. Road and gravel frames with a 140mm rear flat mount use this adapter to run 160mm. Front flat mount frames are typically designed for 160mm already.

Does this adapter work with non-SRAM calipers?

Yes. Flat mount is an industry-standard interface and this adapter is compatible with any flat mount caliper from any brake brand.

Best For

Road and gravel cyclists with a rear flat mount frame designed for 140mm rotors who want to run a larger 160mm rotor for additional braking power without changing calipers or frames.

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