The Ultimate Bicycle Thru Axle Adapter for Safe Towing
Connect your child, pet, or cargo trailer with confidence. Our precision-engineered replacement bike thru axle takes the guesswork out of compatibility.
Happy Customers
Avg Rating (323+ reviews)
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Loved Across Britain
ThruSports
£18.79 inc. VAT (£15.66 ex. VAT)
A heavy-duty 12mm thru axle designed specifically to connect modern bikes to child, pet, and cargo trailers safely and securely.
Free UK Delivery
Next-day dispatch straight from our UK warehouse.
Built for Towing
Aerospace-grade 7075 aluminium tested for heavy cargo and child trailers.
Guaranteed Fit
Precision M12 x 1.5 threading with adjustable 160-178 mm length spacers.
30-Day Returns
Ordered the wrong thread pitch? Return it hassle-free for a full refund.
Installation Guide
- Remove your existing rear thru axle using a 5mm hex key.
- Compare the thread pitch of your old axle to the ThruSports axle to ensure they match (M12 x 1.5).
- Slide the appropriate number of included spacers onto the ThruSports axle so the shaft length matches your original axle.
- Insert the ThruSports 12mm thru axle into your bike's rear wheel hub and tighten to the manufacturer's recommended torque (usually 10-12 Nm).
- Place your trailer hitch over the extended stainless steel stud.
- Secure the hitch using the provided locknut, tightening firmly with a spanner.
Trusted by Thousands of UK Cycling Families
Rider Reviews
Spot on. I spent ages trying to figure out which adapter I needed for my gravel bike to tow our Burley Bee. The M12x1.5 pitch matched my frame perfectly, and the spacers made getting the length right a breeze.
Excellent quality replacement bike thru axle. Feels much sturdier than the one that came with my cargo trailer. Next day delivery was a lifesaver before our family holiday.
The axle itself is brilliantly made and holds the child trailer securely. My only minor gripe is that you need your own 5mm hex key to fit it, which wasn't an issue for me but worth noting.
I use this as a cargo trailer thru axle for bikepacking. The stainless steel stud takes a lot of abuse on rough Scottish gravel tracks, and it hasn't bent or loosened once. Highly recommended over the expensive American imports.
Clear instructions and a perfect fit. I was worried about stripping the threads on my carbon frame, but this bicycle trailer axle adapter threaded in smoother than the factory original.
Very solid piece of kit. It took me a little while to figure out exactly how many spacers I needed to match my old 168mm axle, but once set up, it's been totally faultless for the school run.
At ThruSports, we understand the frustration of bringing home a new child or cargo trailer, only to discover it won't fit your modern bike's rear wheel. With the cycling industry moving away from standard quick release skewers, finding the correct replacement bike thru axle has become a confusing maze of thread pitches and shaft lengths.
Founded by practical UK cyclists, ThruSports strips away the confusion. We don't sell hundreds of generic bike parts; we specialise strictly in towing compatibility. Our flagship M12 x 1.5 bicycle trailer axle adapter is engineered from aerospace-grade aluminium, ensuring a robust, secure connection between your bike and your trailer. Whether you are towing the kids to school, hauling bikepacking gear, or taking the dog to the park, our axles provide the peace of mind you need.
We pride ourselves on offering a clear, compatibility-first alternative to brands like Burley and Robert Axle Project. By focusing on detailed sizing guidance and exceptional UK-based customer support, we ensure you get exactly the right fit for your frame the very first time. No guesswork, just safe, dependable towing for your everyday adventures.
Why UK Customers Love Us
Our products are designed and supported in the UK, ensuring superior quality and fast tracked delivery from our British warehouse. We offer free UK delivery on all orders, eco-friendly packaging to reduce carbon footprint, and warm, direct customer service. Every order is backed by a generous 30-day returns policy under the UK Consumer Rights Act 2015 — you are always protected.
Fitment & Compatibility FAQs
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