Replaces the proprietary R.A.T. thru-axle on Cervelo bikes with 12x142 hub spacing, so the bike can mount on a wheel-on resistance trainer. Cervelo's own R.A.T. hanger won't take a standard threaded axle, so this kit includes a replacement derailleur hanger as well as the 170mm, M12x1.75 axle.

Compatibility & fit

Fits Cervelo bikes with the R.A.T. thru-axle system and 12x142 hub spacing. Confirm your bike's axle system with Robert Axle Project's online Axle Finder, or bring it to the Tune workshop and we'll check it.

Robert Axle Project's lifetime warranty covers defects in material and workmanship to the original purchaser, for the lifetime of ownership - it excludes misuse, improper installation, accidents and 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.
  • 170mm true length, M12x1.75 thread
  • For Cervelo R.A.T. bikes, 12x142 hubs
  • Replacement derailleur hanger included
  • 7075 aluminium shaft, hard-anodised
  • 5mm hex wrench to install
BrandRobert Axle Project
Axle diameter12mm
ThreadM12x1.75
Length170mm true
Hub spacing142mm
FitsCervelo bikes with R.A.T. thru-axle
IncludesReplacement derailleur hanger
Material7075 aluminium, hard-anodised
Weightapprox 99g
SKU DTW-RAG-TRA223.C
Barcode # 602150474061
Brand Robert Axle Project