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.