12mm Thru Axle for Trainer: 180mm with 1.75 Thread

(7 customer reviews)

$ 54.00

Our Trainer Axle is designed to adapt your thru axle equipped bike with your on wheel 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.

In stock

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SKU: TRA211 Category:


  • This Trainer Axle is designed to adapt your high quality bike to your on-wheel 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.


Prop65 Warning icon

WARNING: This product can expose you to chemicals including nickel acetate, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Additional information

Weight 0.3125 lbs


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 on-wheel resistance trainers.
  • The true length of the axle shaft is 180 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 12×148 hub does not equal a 148 mm long axle.
  • This axle has a 1.75 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?

7 reviews for 12mm Thru Axle for Trainer: 180mm with 1.75 Thread

  1. Robert (verified owner)

    I ordered this axle to replace the one provided with an ALEKO trainer for a Diamondback Release One bike. The Robert Axle Project axle was of high quality and fit perfectly. I would recommend pulling your original axle and measuring the length before ordering as the options provided by the ordering page weren’t entirely clear (at least to me). The axle was at least of the same quality fit and finish as the original part and I intend to use it on the trail once riding weather returns.

  2. Santiago Salina (verified owner)

    Excelent fit in my TREK procaliber 9.6. Easy handling and quick setup

  3. Adam (verified owner)

    Slapped it on my Honzo ST, works no trouble on Stac zero.

  4. Frederick Schuett (verified owner)

    Worked flawlessly. It was nice that the sales team confirmed my bike (make and model) to confirm I was purchasing the correct axle size.

  5. @RealLifeMTB (verified owner)

    Great quality product, fit and finish are solid, performance is as good or better than OEM. Threads more easily than OEM and has shown no issues at all to this point. Included an additional spacer which I used to ensure no contact with the frame on a Cannondale Bad Habit Carbon, great touch!

  6. Michael (verified owner)

    Fit perfectly and was exactly what I needed to get my bike to work with my trainer

  7. Mark (verified owner)

    The only place I could find a thru axle solution to that let’s me use the trainer. Quality is just as good as the Trek axle it replaced!

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