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The Robert Axle Project

The Robert Axle Project - Hitch Mount Thru Axle for Cargo and Child Trailers - 12x142/148mm - M12x1.0 - KID213/215/216

The Robert Axle Project - Hitch Mount Thru Axle for Cargo and Child Trailers - 12x142/148mm - M12x1.0 - KID213/215/216

Hitch Mount Thru Axles for Cargo and Child Trailers.

Whether you are towing your kids, the family dog or a cooler full of refreshments, hitch mount trailers provide a great way to share your adventures with those you love. Many child bike trailers and most cargo trailers have a hitch style mount that attaches to one side of your bike wheel. With The Robert Axle Project 12 mm Thru Axle for Hitch Mount Trailers, you can attach this type of bike trailer to any bike with a rear 12 mm thru axle—mountain, road, fat, cross, e-bike and everything in between.

The thru axles for child trailers are designed for maximum strength and ease of use in attaching your child trailer. The Robert Axle has a stainless steel 10x1 mm threaded stud to attach the hitch supplied by your trailer manufacturer.

Replace your stock axle with your Robert Axle, install your trailer hitch and hook up your trailer. Off you go with your kids in tow.

The Robert Axle Project precision product is designed to adapt your high-end bike with your precious cargo. Robert Axle for Hitch-Mount Trailers replaces your stock axle to attach your child or cargo trailer to your 12 mm thru-axle equipped bike. The axles are designed for maximum strength and ease of use in attaching your trailer.

  • This axle is compatible with Burley, Carry Freedom, Chariot/Thule, Croozer, Instep, and many more.
  • The axle shaft and axle end are precision CNC machined. The axle shaft is 7075 aluminum and hard black anodized for rugged durability.
  • The axle end is stainless steel, which allow for mounting of the hitch provided with your trailer. The threads are M10x1 mm (metric).
  • Hardware for attachment of the hitch is included; the hitch is not.
  • No special tools required. Design allows for installation or wheel removal using your standard 5 mm hex wrench.
  • Designed, built and quality tested in the USA. Proven around the world.

The Robert Axle Project Hitch Mount installation video:


Robert Axle for Hitch-Mount Trailers replaces your stock axle 12x142 mm or 12x148 mm to attach your child trailer to your 12 mm thru-axle equipped bike. Use the attached PDF to find the right thru axle for your bike.

KID213 - 162-172 mm Length, 1.0 mm thread pitch:
Suitable for: Intense, Cannondale, Norco, Felt, Cube, Canyon, Scott, Liteville, Lapierre, Radon and more.

KID216 - 175/181 mm Length, 1.0 mm thread pitch

KID215 - 217/229 mm Length, 1.0 mm thread pitch
Included in delivery: 1 axle with nut, incl. 2 spacers: 1 flat, 1 conical for X-12
Manufacturer item code: KID213, KID216, KID215
Material: 7075-Aluminium, Stainless Steel
Weight supplement: at 160/162/172mm)
approx. 104 gram (at 175/181 mm)
approx. 118 gram (bei 217/229 mm)
(manufacturer's specs

Fact Sheet of The Robert Axle Project - Hitch Mount Thru Axle for Cargo and Child Trailers - 12x142/148mm - M12x1.0 - KID213/215/216

Product Name: The Robert Axle Project - Hitch Mount Thru Axle for Cargo and Child Trailers - 12x142/148mm - M12x1.0 - KID213/215/216
Manufacturer: The Robert Axle Project
Item Code: RAP291493
activity: Cycling
usage bikesport: MTB
axle standard: 12x142mm (RW), 12x148mm Boost (RW)
thread: M12x1,0
Model year: 2023
Collection: Full year
Color: Black
weight: 106g
Axle Finder
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