The BLACKBEARING TR-1.5 trailer axle represents the essential technical solution for connecting your bike trailer (child or cargo) to a modern bike equipped with a 12 mm thru-axle. CNC machined from high-strength aluminum and black anodized, this screw-in clamping axle guarantees a secure and durable fastening while remaining compatible with most bike trailers on the market.

Technical Summary

Designed specifically for MTB, gravel or road rear frames equipped with a 12 x 142/148 mm standard, this BLACKBEARING axle replaces the original axle of your rear wheel to accommodate the trailer's hitch attachment. The M12 x 1.5 threading ensures extensive compatibility with many Shimano hubs and equivalents. Supplied with removable support cone and adjustment spacers, it easily adapts to axle spacing lengths between 164 and 172 mm thanks to the provided spacers.

Technical Highlights

• CNC machined aluminum: Maximum machining precision and optimal mechanical strength for a controlled weight (approximately 60 grams).
• Black anodization: Durable and anti-corrosion finish that preserves the aesthetics and longevity of the component.
• M12 x 1.5 mm thread pitch: Widespread standard on Shimano rear hubs and compatible models, offering firm and secure threading.
• Adjustable length (164-172 mm): The supplied spacers and cone allow fine-tuning for perfect alignment between frame, hub and trailer.
• Wrench tightening (non quick-release): "Screw-in" type for reinforced stability, ideal for heavy loads or long-distance journeys.
• Specific trailer application: Designed to withstand the lateral and dynamic stresses of child, cargo or pet trailers.

Compatibility and Standards

This TR-1.5 axle integrates on all frames equipped with a 12 mm diameter thru-axle with a rear spacing of 142 or 148 mm (Boost or standard). The M12 x 1.5 threading corresponds to the most common thread pitch standard for MTB, gravel bike and certain modern road rear hubs. Before purchase, check the marking on your original axle or measure the spacing and thread pitch of your hub to confirm compatibility.

Installation and Adjustments

Installation is simple and quick: remove the original axle from your rear wheel, insert the TR-1.5 axle making sure to correctly position the support cone and the supplied adjustment spacers to compensate for differences in axle spacing length. Tighten firmly with a wrench respecting the torque recommended by your hub manufacturer. Then connect your trailer's hitch to the provided lug and check freedom of movement without lateral play.

Recommended Use

This BLACKBEARING axle is intended for cyclists equipped with child trailers (Thule, Hamax, etc.), cargo trailers or utility trailers such as BOB Yak, Burley, or equivalents. It ensures a reliable and secure connection even on rough terrain or during daily urban journeys. Thanks to its lightweight aluminum construction, it does not weigh down your bike-trailer assembly and guarantees optimal transmission of traction effort.

Maintenance and Durability

Black anodization effectively protects the aluminum against oxidation and mechanical wear. Regular cleaning with soapy water and light greasing of the threading extend the axle's service life and facilitate assembly/disassembly. Check the tightening periodically, especially after the first kilometers or when changing trailers.