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Avid

Avid Disc Brake Post Spacer Set

★★★★★4.2 (29 reviews)

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

$27.00*$30.00Save 10%
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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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

Compatible with Avid 74mm post mount calipers, this spacer set allows precise installation on both forks and frames for optimal brake performance

Crafted from durable, corrosion-resistant stainless steel, ensuring long-lasting reliability and sleek appearance

Features include adjustable spacer lengths (+10mm, +20mm, +40mm) to customize rotor size and wheel compatibility, enhancing your bike's versatility and braking power

Designed with lightweight engineering in mind-most adapters without CPS hardware reduce weight without sacrificing strength-ideal for performance-focused riders

Comes complete with genuine Stainless Caliper Mounting Bolts, ensuring secure attachment and easy installation for enhanced safety and seamless cycling experience.

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

Pros & Cons

👍 Pros

  • Includes three spacer sizes for flexible rotor compatibility
  • Stainless steel construction resists corrosion and maintains durability over time
  • Comes with genuine Avid caliper mounting bolts so no extra hardware is needed
  • Lightweight design adds minimal weight to the bike
  • Works on both fork and frame post mount locations

👎 Cons

  • Only compatible with Avid 74mm post mount calipers
  • Does not include instructions for determining which spacer size is needed for your specific setup
  • Spacers alone do not include brake line length adjustments that may be necessary when changing rotor sizes

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.

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