Wolf Tooth Disc Brake Adapter - Post to Flat Mount | +20mm
Disc Brake Parts
Wolf Tooth Disc Brake Adapter - Post to Flat Mount · +20mm
Wolf Tooth Disc Brake Adapter - Post to Flat Mount | +20mm
The Wolf Tooth Post to Flat Mount Brake Adapter +20mm lets you run flat mount brakes on a frame or fork that was designed for post mount brakes. Read the overview
At a glance
- Material
- 6061-T6 aluminum, CNC machined
- Offset
- +20mm
- Post Mount Native Sizes
- 140, 160, and 180mm
- Rotor Sizes
- 160, 180, and 200mm
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Overview
Is the Wolf Tooth Post to Flat Mount Adapter the Right Conversion?
The Wolf Tooth Post to Flat Mount Brake Adapter +20mm lets you run flat mount brakes on a frame or fork that was designed for post mount brakes. Wolf Tooth built it for riders who want to run a road groupset on a mountain bike frame. The adapter is CNC machined from 6061-T6 aluminum, weighs 17g, and is sold individually.
Because this is a +20mm adapter, your rotor has to be 20mm larger than the native post mount size of your frame or fork. A 140mm native mount works only with a 160mm rotor, a 160mm native mount works only with a 180mm rotor, and a 180mm native mount works only with a 200mm rotor. Wolf Tooth tested the adapter with SRAM and Shimano brakes.
Check your bike before you order. Wolf Tooth says you need at least 13mm between the top of the brake boss and the frame or fork, and the adapter does not fit Fox Step Cast forks. It comes with two M5x13mm flat head bolts for the flat mount caliper and two M6x15mm socket head bolts for the post mount.
All the specs
11 specs in 3 groups. Open a group, or expand them all.
MPN PST-FLT-BRKADPT
Sensors and connectivity2 specs
- Post Mount Native Sizes
- 140, 160, and 180mm
- Not Compatible With
- Fox Step Cast forks
Build and box2 specs
- Material
- 6061-T6 aluminum, CNC machined
- Weight
- 17g
Other details7 specs
- Conversion
- Post mount frame or fork to flat mount brake
- Offset
- +20mm
- Rotor Sizes
- 160, 180, and 200mm (20mm larger than the native mount)
- Tested With
- SRAM and Shimano brakes
- Clearance
- At least 13mm between the top of the brake boss and the frame or fork
- Includes
- 2 M5x13mm flat head bolts for the caliper, 2 M6x15mm socket head bolts for the post mount
- Sold
- Individually
FAQ
Good questions
Get to know Wolf Tooth
There's more to Wolf Tooth than this one product. Our Wolf Tooth page has the full Wolf Tooth lineup we carry and more about the brand.
Visit the Wolf Tooth page →What rotor size do I need with the +20mm adapter?
Your rotor must be 20mm larger than the native post mount size of your frame or fork. A 140mm native mount needs a 160mm rotor, a 160mm native mount needs a 180mm rotor, and a 180mm native mount needs a 200mm rotor.
Will it fit a Fox Step Cast fork?
No. Wolf Tooth says this adapter is not compatible with Fox Step Cast forks. On any frame or fork, it needs at least 13mm between the top of the brake boss and the frame or fork.
Which brakes has Wolf Tooth tested it with?
Wolf Tooth tested it with SRAM and Shimano brakes. Bolts for both the flat mount caliper and the post mount are included.
Reviews
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“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
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“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
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