20mm MTB Disc Brake Adapter For 74mm Post Mount Frames Lets You Run 160mm On 180mm Post Or 200 And 203mm Rotors On 180mm Post With Caliper Bracket For MTB And Road Bikes Upgrade

20mm MTB Disc Brake Adapter for 74mm Post Mount Frames
✔️ Fits A-Post F180 mounts; 160mm on 180mm post or 200/203mm on 180mm

This CNC-machined aluminum post mount adapter lets you convert 74mm post mounts to run larger rotors. It supports installing a 160mm rotor on a 180mm post, or a 200mm/203mm rotor on 180mm post, making it ideal for MTB and road bikes.

✅ Post Mount Compatibility: 74mm (A-Post) to 180mm post forks and frames
✅ Rotor Sizing: supports 160mm on 180mm post or 200/203mm on 180mm post
✅ Material & Finish: CNC machined aluminum alloy, black anodized
✅ Hardware Included: 2 bolts and 8 washers for precise alignment
✅ Easy Installation: simple setup for MTB and road configurations

💡 What is a post mount brake adapter used for in bike setups?

This handy piece lets you upgrade rotor size by moving the caliper to fit larger rotors.

- Upgrades braking power by fitting larger rotors on a 180mm post mount
- Keeps caliper alignment with included bolts and washers
- Ideal for MTB and road bikes looking for better stopping power