Avid

Avid Disc Brake Post Spacer Set

Mount disc brake calipers to any rotor size with Avid's stainless steel post spacer set featuring +10mm, +20mm, and +40mm options.

$37.77*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Aug 28, 2026.Price and availability are subject to change — details.

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Overview

The Avid Disc Brake Post Spacer Set is an essential hardware kit for mountain bikers and cyclists who need to mount or reposition their disc brake calipers to accommodate different rotor sizes. The set includes three spacer lengths — +10mm, +20mm, and +40mm — that work with Avid's 74mm post mount calipers, giving riders the flexibility to upgrade rotor sizes or ensure proper caliper alignment on both forks and frames.

Constructed from corrosion-resistant stainless steel, the spacers are built to withstand trail conditions and weather exposure without degrading. The kit also includes genuine Avid stainless steel caliper mounting bolts, eliminating the need to source additional hardware. The lightweight design keeps added weight to a minimum, making this set well-suited for performance-oriented riders who want reliable braking without unnecessary bulk. Whether you are setting up a new build or adjusting an existing brake system, this spacer set provides the mounting flexibility needed for a clean, secure installation.

Key Features

Genuine Avid disc brake adapters

Specifications

Compatibility
Avid 74mm post mount calipers
Spacer Sizes
+10mm, +20mm, +40mm
Material
Stainless steel
Mounting
CPS and standard hardware
Rotor Size Support
160mm post
Included Hardware
Stainless steel caliper mounting bolts
Installation
Fork and frame compatible

Frequently Asked Questions

The set includes +10mm, +20mm, and +40mm spacers, allowing you to adapt 74mm post mount calipers to fit 160mm and larger rotors depending on your fork or frame.
Yes, it comes with genuine Avid stainless steel caliper mounting bolts for secure attachment.
It is designed specifically for Avid 74mm post mount calipers. Compatibility with other brands using the same post mount standard may vary.
Yes, the set is designed for installation on both fork and frame post mount tabs.
The spacers and included hardware are made from corrosion-resistant stainless steel.