How to Convert Your Wheelset from QR to Thru-Axle: Step-by-Step Guide

Introduction: Why Convert to Thru-Axle?

Quick-release (QR) skewers have been the standard for decades, but thru-axles are now the norm on modern road, gravel, and mountain bikes due to their increased stiffness, alignment accuracy, and security. If you're upgrading your frame or fork—or simply want better braking and handling—converting your QR wheelset to a thru-axle can be a smart move.

This guide walks you through everything you need to know about making the switch, from compatibility checks to installation.

1. Understand the Basics: QR vs. Thru-Axle

Feature	Quick Release (QR)	Thru-Axle
Axle Size	5mm diameter	12mm (road), 15mm (gravel/MTB), through 148mm width
Mounting	Lever clamps skewer	Threaded axle inserted through fork/dropouts
Advantages	Lightweight, easy to remove	Stiffer, safer, better alignment
Common On	Older road bikes, rim brake bikes	Modern disc brake bikes

Note: Not all wheels can be converted—hub compatibility is key.

2. Check Hub Compatibility

Before attempting a conversion, verify that your hub is convertible.

Look for:

End caps that can be swapped (most high-end and modular hubs allow this)

Hub brand/model support (DT Swiss, Novatec, Superteam, etc.)

Conversion kits offered by the hub manufacturer

If your hub is not convertible, you'll need a new hub or wheelset.

3. Gather Necessary Parts

Depending on your hub and frame standards, you may need:

✅ Thru-axle conversion end caps
✅ Compatible thru-axle (size matches your bike’s frame: e.g., 12x100mm front, 12x142mm rear)
✅ Tools: Allen keys, hub wrenches, possibly cone wrenches
✅ Grease or anti-seize compound
✅ (Optional) New rotors if changing hub spacing or mount style

For example:

DT Swiss 350 hubs use press-fit end caps that pop off and are replaced.

Novatec hubs may require internal axle changes.

4. Step-by-Step Conversion Process

Step 1: Remove the Wheel and Skewer

Take the wheel off your bike and remove the QR skewer and any springs.

Step 2: Remove QR End Caps

Use your hands or soft pliers to pull off the QR end caps. On some hubs, a gentle twist or use of a cone wrench is required.

Step 3: Install Thru-Axle End Caps

Push in or thread in the new end caps that match your thru-axle size. Make sure they're seated evenly.

Tip: Lightly grease the end caps for easier removal in the future.

Step 4: Reinstall Wheel and Insert Thru-Axle

Place the wheel into the frame/fork. Slide the thru-axle through the dropouts and hub. Tighten to the manufacturer's torque specs.

5. Adjust Disc Brake Alignment

After installing a thru-axle wheel, you may need to:

Realign your caliper if the rotor is rubbing

Check rotor spacing (some hub conversions alter spacing slightly)

Verify rotor bolts are torqued properly

6. Test Ride and Final Checks

Before heading out:

Spin the wheels to ensure no brake rub

Bounce the bike to check for rattles or loose fittings

Confirm smooth shifting if the rear spacing has changed

Common Compatibility Questions

Q: Can I convert rim brake wheels?
A: Usually no. Rim brake hubs rarely support modular end caps for thru-axle use.

Q: Can I convert a 9mm QR to a 12mm thru-axle?
A: Only if the hub manufacturer offers appropriate end caps and the axle bore allows the larger diameter.

Q: Will the hub width change?
A: Sometimes. Converting from QR to thru-axle might change spacing slightly; check if adapters adjust offset.

Conclusion: Worth the Upgrade—With the Right Hubs

Converting your wheelset from QR to thru-axle is entirely possible if your hubs support it. The benefits—better braking, stiffer ride feel, and modern compatibility—make the process worthwhile, especially for gravel and disc brake road bikes.

If you're unsure about your hub model or need help identifying conversion kits, consult the brand’s documentation or reach out to customer support.

Pro Tip: Brands like Superteam offer modular hub systems that make QR-to-thru-axle conversion straightforward—check your model for compatibility.