Which Freehub To Choose for Your Cassette | Freehub Compatibility Guide

By ProX April 15th, 2026 53 views

While freehubs may seem like a small component, they play a critical role in drivetrain compatibility and overall riding performance. Choosing the correct freehub ensures seamless installation, optimal shifting performance, and long-term reliability. As modern drivetrains continue to evolve from 8/9/10-speed to today’s dominant 11, 12 and 13-speed systems, freehub standards have become increasingly complex. Selecting the correct freehub is no longer optional—it is critical for ensuring proper cassette compatibility and drivetrain performance. A freehub is the core interface between your hub and cassette, transferring pedaling power while allowing the wheel to spin freely when coasting. In this guide, we break down the most common freehub standards used in road and MTB carbon wheelsets, helping you choose the correct option with confidence.

Road Bike Wheels Freehub Standards

Shimano HG (Hyperglide) Freehub – 11/12 Speed

The Shimano HG freehub is the most widely used standard in the industry.

Compatible with Shimano 11/12 speed road cassettes
Compatible with SRAM 11-speed road cassettes
Supports 10-speed systems with spacer

This is the most versatile option for riders using Shimano or SRAM 10/11-speed drivetrains.

Campagnolo Freehub – 11/12 Speed

Campagnolo uses a proprietary freehub system that is not cross-compatible with Shimano or SRAM.

Compatible with Campagnolo 11-speed cassettes
Compatible with Campagnolo 12-speed cassettes
No spacer required between speeds

SRAM XDR Freehub – 12/13 Speed Road

SRAM introduced the XDR freehub for its modern 12-speed road drivetrains, including RED and Force eTap AXS.

Compatible with SRAM 12-speed road cassettes
Compatible with SRAM 13-speed gravel cassettes
Extended driver body design
Can support XD cassettes with spacer

Mountain Bike Wheels Freehub Standards

Shimano HG Freehub – 10/11 Speed MTB

Originally designed for 10-speed MTB systems, this freehub remains widely used.

Compatible with Shimano 10/11-speed MTB
Compatible with SRAM 10-speed MTB
Not compatible with SRAM 11/12-speed MTB

Shimano MicroSpline – 12 Speed MTB

MicroSpline was developed by Shimano specifically for 12-speed MTB drivetrains.

23-spline interface for improved load distribution
Allows use of lightweight alloy freehub bodies
Compatible only with Shimano 12-speed MTB systems

SRAM XD Freehub – 11/12 Speed MTB

The SRAM XD driver is designed for wide-range MTB cassettes with small 10T cogs.

Compatible with SRAM 11-speed MTB
Compatible with SRAM 12-speed MTB
Not compatible with Shimano systems

Key Takeaways — How to Choose the Right Freehub

Your freehub must match your cassette and drivetrain system.

Shimano / SRAM 10–11s road → HG freehub
SRAM 12s road (AXS) → XDR freehub
Campagnolo → Campagnolo freehub
Shimano 12s MTB → MicroSpline
SRAM MTB (11/12s) → XD freehub

PROX Recommendation

At PROX, our carbon wheelsets are available with multiple freehub options—including Shimano HG, SRAM XDR, MicroSpline, and Campagnolo—ensuring compatibility with all major drivetrain systems. If you are unsure which freehub to choose, we recommend confirming your cassette model, drivetrain type, and riding discipline before placing your order.

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