The becco thru-axle coupler M12 x 1.0 / 172-184 is the complete solution for bikes with a thru-axle system. The set combines the high-quality becco Thru-axle made from 7075-T6 aluminum alloy with the innovative becco towing part, precisely matched for maximum safety and comfort. Together with your trailer's becco tow bar, they form a secure, comfortable connection. The solution is based on the proven coupler technology of the long-established brand Leggero, with further significant improvements by Qeridoo. The result is a ready-to-use coupler that sets new standards for safety, handling, and ease of use.
The complete solution – precisely matched
The becco thru-axle coupler gives you everything you need on your bike to securely attach your bike trailer. The becco Thru-axle replaces your bike's original thru-axle and provides an integrated attachment point for the coupler system. The becco towing part attaches to it easily and securely. Both components are precisely matched and, together with your trailer's becco tow bar, form a strong, durable connection that meets the highest safety standards.
Thru-axle made from aircraft-grade aluminum
The becco Thru-axle is made from 7075-T6 aluminum alloy, one of the strongest aluminum alloys available. This material is also used in aircraft manufacturing and offers an exceptional combination of low weight and strength. The alloy can withstand significantly higher loads than standard aluminum alloys and is also corrosion-free, making it ideal for the demanding conditions of trailer operation.
The extra-thick hard-anodized coating provides additional protection against corrosion and wear. This advanced surface treatment hardens the outer layer, making it resistant to scratches, abrasion, and weather exposure. The result: a thru-axle that retains its appearance and function even after years of intensive use.
becco towing part made from a high-strength aluminum alloy
The becco towing part completes the coupler with equally high-quality materials: high-strength aluminum alloys and precision-manufactured steel components provide maximum load resistance with minimal weight. The robust construction is designed for the dynamic loads of trailer operation and ensures a lasting, secure connection. Together, both components form a precisely matched system that meets the highest expectations for quality and durability, even with intensive daily use in a wide range of conditions.
Easy attachment with the becco coupler system
The becco tow bar on your trailer makes attachment a breeze: place the tow bar head onto the towing part of the thru-axle coupler, close the magnetically assisted clamping lever, and you're done. You can hear and feel it securely click into place. No awkward handling, no complicated steps. That's everyday practicality as it should be. Whether you're heading out for a quick shopping trip in town or a big family outing, attachment takes just one simple movement.
Flexible length adjustment with the spacer system
The becco Thru-axle comes with different spacers that let you achieve a precise fit for your bike. Included are:
- 1x conical spacer (5 mm) – for frames with a conical dropout shape
- 1x flat spacer (2 mm) – for fine adjustment
- 1x flat spacer (10 mm) – for larger length adjustments
Combining the spacers lets you flexibly adjust the effective length to 184, 175 or 172 mm for a precise fit for your bike model. The spacers ensure that the axle is in the optimal installation position and that the wheel is securely clamped without play.
Precise alignment – guaranteed
A clever design principle sets the becco coupler apart from conventional systems: alignment and fastening are separate. The towing part fits onto the thru-axle's integrated attachment point and can rotate freely before being secured. This lets you easily align it horizontally, the ideal position for optimal force transfer. The screw then secures it in this exact position without allowing the towing part to rotate.
The advantage over traditional couplers: with conventional systems, the coupler rotates uncontrollably as you tighten it, leaving the final position unpredictable and often slightly tilted. The becco coupler guarantees precise alignment during assembly. Once correctly adjusted, this ideal position is maintained permanently. For you, that means optimal towing force transfer, less wear, and a better riding experience on every outing.
Which bikes is this thru-axle suitable for?
The becco thru-axle coupler M12 x 1.0 / 172-184 fits all bikes with a 12 mm thru-axle and the X-12 standard (1.0 mm thread pitch).
Important: Before purchasing, measure the length of your original thru-axle and check the thread pitch. The becco Thru-axle is available in different lengths and thread pitches to cover almost all common 12 mm standards.
Not suitable for: Bikes with carbon dropouts or a carbon rear frame (risk of breakage!).
Terminology: thru-axle vs. thru-axle coupler
Thru-axle: A replacement for your original thru-axle with an integrated adapter for the becco towing part. The becco towing part is also required for a functional coupler.
Thru-axle coupler (this product): A complete set consisting of a thru-axle and becco towing part.
Important: Only the combination of a thru-axle and becco towing part forms a functional coupler on your bike.
Good to know: Current Qeridoo trailers come with a becco towing part.