12mm Thru Axle for Trainer: 167mm with 1.75 Thread

(8 customer reviews)

$ 54.00

Our Trainer Axle is designed to adapt your thru axle equipped bike with your wheel-on trainer, such as a 1up, Blackburn, Cyclops, Kinetic, Tacx, Wahoo and many other trainers. Our goal is to fit the thru axle to your bike perfectly, so we minimize spacers and extra parts, providing a clean, high performance axle for your bike. Train, warm up and be race ready and fit for the season.

SKU: TRA221 Category:


Additional information

Weight 0.3125 lbs



8 reviews

  1. Brandon H (verified owner)

    This was the only axle that fit into an older compu-trainer my cycling coach is using because all other axles stick out too far on either side of the bike. After following the sizing guides, this axle perfectly fit my Trek Domane SL8. It is very good quality, fits the trainer perfectly, looks great, and was shipped very quickly. I’m very happy with my purchase and would definitely recommend this to others.

  2. Bill (verified owner)

    Proper axle fit, excellent service and shipping. Will use again.

  3. Antonio B (verified owner)

    Very good product and well finished.
    I used it to install my Trek Emonda 2019 on Tacx Vortex. Shipped in few days in Italy. Very satisfied!
    Thanks a lot!

  4. Levi Hill (verified owner)

    This was a gift for my father. Perfect fit, excellent service, speedy shipping. Love the axel finder feature.

  5. Esteban (verified owner)

    Whas exactly what I need. very good product. I will install in my Trek Checkpoint 4L. thank you very much!

  6. Mike (verified owner)

    Mounted a 2019 Norco x6 on an old cycle ops fluid trainer. Axle fits really well, some concern about environmental seal for outdoor use due to the inset nature of axel access on the Norco frame. It seems to work well on the trainer but will switch back to manufacturers’ axle for outdoor rides.

  7. Jeffrey Roger (verified owner)

    Hey, Hey, Hey!!!!

    This is the through axle trainer adapter you have been looking for.

    I too am riding a Computrainer and a Trek Domane SL7 with disc brakes and Ultra Di2 11 speed and after jerry-rigging a solution for 2 weeks I heard about teh Rober Axle Project from a friend in Bend.

    It arrived 3 days after ordering it and it took about 3 minutes to get it set up and m indoor training has never been better.

    I broke the frame from my Domane 5.9 in the Computrainer from the previous clamp on QR attachment. The Through axle puts so much less stress on teh rear dropouts (if any) and I am in Zwift heaven.

    Thanks tons!


  8. Jonathan B (verified owner)

    Ordered this axle for my 2019 Trek Emonda after getting an old Cyclops Fluid2. Axle finder made it easy to find exactly what I was looking for. Excellent service and shipping. Axle fit perfectly in bike and in trainer. Hopefully I won’t need a new axle for a long time, but definitely will be coming back here when I do.

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All orders from our website are via US Postal Service, from Oregon, U.S.A. We make every effort to ship your order within one business day.

Shipping rates and average delivery times are:

• United States: $7.50 USD, 3-4 business days

• Canada: $12.50 USD, 10-14 business days

• All other International: $12.50 USD, 12-16 business days

We are unable to offer expedited shipping. If you need expedited shipping of our products, please visit our Dealers & Distributors page for options. We cannot take responsibility for any delays during shipping, including delays in customs or incorrect shipping information.

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