12mm Thru Axle for Trainer: 160 to 172mm with 1.0 Thread

(17 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: TRA213 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. Our the trainer axle ends will extend 15 mm past your frame on each side.


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 172 mm, but can be shortened using the included spacers – a flat spacer and a tapered X-12 spacer. This allows for axle lengths of 162, 167 or 172 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?

17 reviews

  1. Victor Ing (verified owner)

    Fantastic product. Good quality. Great service!
    I’m now able to put my Specialized Stumpjumper on my BKool trainer and put in some kms when I can’t get outdoors.
    Perfect fit on both the bike and the trainer.
    Very fast delivery to Sydney Australia as well.
    Thank you The Robert Axle Project!

  2. Simon Betts (verified owner)

    It appear that this product is popular with Australian Specialized Stumpjumper owners.

    This product was spot on for my bike and JetBlack trainer. I did fit a slick road tyre to my bike to reduce noise. The axle great quality and the perfect way to rehab from hip surgery.

  3. Mark Manner (verified owner)

    Great product, works well to connect my 142/12 thru axle bike to the trainer. Really quick shipping and delivery.

  4. Nadir Sidi

    This is exactly what I needed. I got this for my 2017 Specialized Roubaix and it fits perfectly with the included washer. My friend got something similar for his brother and he said it was much more than the price here. I really recommend this product!

  5. Nadir Sidi (verified owner)

    This is exactly what I needed. I got this for my 2017 Specialized Roubaix and it fits perfectly with the included washer. My friend got something similar for his brother and he said it was much more than the price here. I really recommend this product!

  6. Danny Jones

    Product is well made and fit perfectly
    I would recommend this product

  7. Pedro Carneiro (verified owner)

    Good costumer service! Works great with my hardtail + wahoo kickr snap!

  8. Garth (verified owner)

    Amazing product!!!! Got me up and training on my trainer two days after I placed my order!!! As far a customer service goes, they are tops…… I wish everything in this country would run as smooth as these guys!!!!

  9. Brian Engler

    Great Product. Great quality. Great service. The Perfect solution for my BMC Roadmachine 03 to workout on my Wahoo Kickr Snap or go straight for a ride.

  10. Gerry (verified owner)

    This is a great option! I’m able to use my main mountain bike on a kinetic trainer through the cold months without much hassle.

  11. Bernard Rosenberg (verified owner)

    Excellent design, very fine machining, and quick delivery. This thru axle allows my wife’s custom Seven Cycles bike to be used on her trainer during the icy periods of winter.

  12. Jesse (verified owner)

    For awesome! Great product! 2018 Specialized Roubaix

  13. Jon Einar Høystad (verified owner)

    The survey (Axle Finder) came out with the axle that fitted perfectly for my Scott Scale mountain bike and my Tacx Flow Smart trainer.
    Delivery of the axle was on time. This is the second axle I buy from these guys, and I am very happy with the service and evrything.

  14. Don Nymann (verified owner)

    Fantastic product & quality! I only needed one of the included spacers for my bike. The end caps are burly and are like those on a traditional quick release skewer. It installed like a breeze and now my thru-axle bike is securely mounted in my CycleOps smart trainer. This is a vastly superior solution compared to the manufacturer’s thru-axle “solution”.

  15. John Coffman (verified owner)

    The axel fit great – the cones could be a bit larger to fit the trainer cups- my trainer is an older Blackburn Fluid trainer and had to make a shim to level up the axel in the trainer.

  16. Robert Watt (verified owner)

    If you never think about your axles that’s a good thing. I bought one of these to ride a trainer and it’s worked great.

  17. Steven Waller (verified owner)

    Used the Axel Finder to come up with this for my 2018 Canyon Spectral AL 6.0 and it fits perfect. Works well in combination with my STAC Zero trainer.

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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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