12mm Thru Axle for Trainer: 154 to 167mm with 1.0mm Thread

(22 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: TRA217 Category:


  • This Trainer Axle is designed to adapt your high quality bike to your wheel-on trainer. These are compatible with all the popular brands: 1up, Blackburn, Cyclops, Kinetic, Tacx, Wahoo and more.
  • Our first priority is building a precision thru-axle. Our axles fit into your bike as well or better than the stock thru axle.
  • The axle is installed with a simple 5 mm hex/allen key. The same tool that you carry on every ride.
  • The best part? When it’s time for your race or time to head outside, simply remove your bike from the trainer, remove the drive side axle end and go. Our axle is suitable for use on or off the trainer. Indoors or out.
  • Important: Before you order, make sure your specific trainer will accommodate the width of your modern thru-axle equipped bike. Measure your trainer at the widest setting and measure the outside width of your bike frame. The trainer axle ends will extend 15 mm past your frame on each side.

Additional information

Weight 0.25 lbs
Dimensions 9 × 6 × 1 in


Robert Axle for Trainers replaces your stock 12 mm thru axle so you can use your bike on a trainer.

  • This axle is compatible with 1up, Blackburn, Cyclops, Kinetic, Tacx, Wahoo and many other wheel-on resistance trainers.
  • The true length of the axle shaft is 167 mm, but can be shortened using the included spacers to 160 or 154 mm. Please note: Thru-axle lengths do not equal hub standards. An axle has to be longer than the hub to fit in the frame. A 12×142 hub does not equal a 142 mm long axle.
  • This axle has a 1.0 mm thread pitch.
  • The axle shaft and axle ends are precision CNC machined from 7075 aluminum, and hard anodized for rugged durability.
  • 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.


Need more information about how our axles work?

22 reviews

  1. Frank Albelda (verified owner)

    This is one solid piece of beauty. At first it did not fit on my 2016 Santa Cruz Nomad so I talked to Chris and he understood the issue and he send a replacement part right away. Customer server is second to none. Thanks, Chris.

  2. Brian Brewer (verified owner)

    Perfect solution to mate my Specialized Diverge to my Cyclops Powerbeam Pro Trainer. After my weekend road rides I setup on trainer for midweek indoor workouts. No thru axel swaps needed. Love it!!!

  3. Michael Ybaben (verified owner)

    Great quality product. I’ve been in the manufacturing sector for 20 years and I know when something is machined properly. This is a well made piece and works perfectly. Let’s me put my 2016 Scott Scale onto a trainer so I can warm up before ‘cross races. I love that i don’t need to swap anything out.
    I recommend these highly!

  4. Justine (verified owner)

    This is just what I was needing to mount my 2018 Specialized CRUX on my classic (blue older model) CompuTrainer stand.

  5. Chris McCardell (verified owner)

    Perfect fit for my 2018 Cannondale Synapse and Tacx Smart trainer. I too leave it in all the time.

  6. Emily

    Fits my 2017 Specialized Roubaix. It’s maybe 1mm shorter than the thru axle that came with the bike, but fits fine, and works with my cycleops trainer.

  7. Colin Blackman (verified owner)

    Awesome product, allows me to put my Specialized Diverge on my Kickr Snap without any axle swaps, just screw on the end cap and good to go!

  8. Javier Morales (verified owner)

    Great Product, well design and build. This product allowed for me to use my Specialized Roubaix with My Cycleops fluid 2 trainer. Very easy and safe way to use a thru axle bike with a regular quick release trainer.

  9. BC (verified owner)

    Fits my 2017 Specialized Roubaix for use with my CycleOps trainer. But that’s not what makes the Robert Axle so great. Because, you can get a through-axle adapter from your trainer manufacturer that will do the job.

    The Robert Axle can stay on, off the trainer. You can ride with it, with full confidence.

    Quality is equal to or better than OEM axle. Really thoughtful product, thoughtfully made.

  10. Mark Torres (verified owner)

    So far so good. Fits my 2017 Specialized Roubaix on Wahoo Kickr Snap. Works on bike rides as well. Its a little short(maybe 1mm) compared to the OEM thru axle.

  11. Sendjaja

    Works perfectly with my cycleops trainer. Very high quality product.

  12. Em Lowing (verified owner)

    Fit like a glove!

  13. Filip Kaurin (verified owner)

    Good quality product. Perfectly fit with my Cube Attain Pro bike. No issues during delivery. All in all satisfied with my purchase.

  14. John Tran (verified owner)

    Perfect for my Cannondale Slate and STAC Zero Halcyon trainer. No issues with ordering, shipping, nor receipt.

  15. Lou Patterson

    This was perfect for getting a Specialized Diverge onto a trainer. High quality is obvious, I’m considering buying a set to replace my existing axles.

  16. Wolfgang (verified owner)

    Clear configurator, good shop, quick support, reliable delivery, accurate invoice, fitting axle :-).

    I strongly recommend this shop with its products.

    Thanks from Austria!

  17. Kevin (verified owner)

    Recently I bought the 12mm Thru Axle for Trainer: 154 to 167mm with 1.0mm Thread, for my new bike 2018 Canyon Aeroad, with disc brakes/ DT Swiss Thru Axle, so that I can use it with my wind trainers. I ordered it online from NZ and it arrived 10 days later. Great Axle, simple to install and best of all I can leave the axle in place go for ride knowing that I can use a standard bike tool kit to remove the axle to change a flat tire. It would be pain to carry another tool to be able to remove the axle on the road OR remembering changing the axle after riding on the wind trainers (Minoura b60 and Kurt Kinetic Wind Trainer Rock n Roll). Thanks team for a great product, highly recommended

  18. Joel Armstrong (verified owner)

    I needed a through axle to put my Canyon Aero Road on a trainer, a friend suggested to me Robert Axle Project and I’m glad he did! Fast shipping, correct part and perfect fitment, exceptional build quality

  19. Mike G. Minichiello (verified owner)

    I bought this trainer axle to use on my 2019 Felt FR in conjunction with a computrainer. The fit was perfect and the quality of the axle was top notch. I am very satisfied with this purchase.

  20. Sarah (verified owner)

    Worked perfectly with my Canyon Ultimate and Cycleops M2 trainer. Love that I can just take it off my trainer and go out for a ride without needing to swap or adjust anything, and it’s sleek enough that I feel ok leaving it on my bike. Highly recommended!

  21. Herbert Woodard (verified owner)

    Top quality axles for my trainer.

  22. Kevin (verified owner)

    This is my second purchase of the 12mm Thru Axle for Trainer, for my Canyon Aeroad. I took my bike to a bike store for a bike fit in Auckland NZ, the technician doing the bike fit thought it was the best axle he has seen it is solid, simple and hassle free to use and install.
    Thanks again team

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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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