A Robert Axle Project Kid Trailer thru-axle replaces your bike's stock 12mm thru-axle with one that has a hitch mount built in, so you can tow a child, pet or cargo trailer securely. This 209mm, M12x1.75 axle suits hitch-style trailers such as Thule, Chariot, Burley, Carry Freedom and Instep.

Fit & installation

The shaft is CNC-machined 7075 aluminium with a hard black anodised finish; the axle end is stainless steel, threaded M10x1 to take the hitch supplied with your trailer (hitch not included). It installs and removes with a standard 5mm hex key.

Compatibility & fit

Thru-axle length and thread are frame-specific — a wrong axle can work loose or fall out under load. Confirm your bike on Robert Axle Project's online Axle Finder (robertaxleproject.com) before ordering, or bring your bike to the Tune Cycles workshop and we'll measure your existing axle and fit the replacement.

Robert Axle Project warrants its axles to be free from defects in material and workmanship for the lifetime of the original purchaser's ownership, covering manufacturing faults only — not misuse, crashes, incorrect installation or normal wear and tear. For warranty support, return the product to Tune Cycles and we'll manage the claim with Robert Axle Project's Australian distributor. This is in addition to your rights under the Australian Consumer Law, so keep your proof of purchase.
  • CNC-machined 7075 aluminium shaft, hard black anodised for durability
  • Stainless steel axle end threads to the hitch supplied with your trailer (hitch not included)
  • Installs and removes with a standard 5mm hex key — no special tools
  • Designed and manufactured in the USA, safety-tested to failure
Axle diameter12mm
Thread pitchM12x1.75
Axle length209mm
Shaft material7075 aluminium, hard black anodised
Axle endStainless steel, M10x1 hitch thread
FitFrame-specific — confirm with Robert Axle Project's Axle Finder
SKU DTW-RAG-KID209
Barcode # 602150467100
Brand Robert Axle Project