SKU: 8871832449

The Robert Axle Project 170mm M12x1.75mm Trainer Axle (TRA223)

Sale price$96.29 Regular price$106.99
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

The Robert Axle Project 170mm M12x1.75mm Trainer Axle (TRA223)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. Cervelo owners with RAT thru axles: This axle will replace the RAT

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.

Cervelo owners with RAT thru axles: This axle will replace the RAT axle found on all of their RAT equipped bikes. In addition to this axle you will need to replace the RAT compatible derailleur hanger with Cervelo threaded hanger Part Code: DRH-WMN112. This axle combined with the replacement derailleur hanger will provide a complete threaded thru axle system. If you don’t know what “RAT” is then this message is not for you, but the axle still is.

DESCRIPTION

  • This Trainer Axle is designed to adapt your high quality bike to your on-wheel trainer. These are compatible with all the popular brands: BKool, 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 5mm 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 15mm past your frame on each side.

SPECIFICATION

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

  • This axle is compatible with BKool, Blackburn, Cyclops, Kinetic, Tacx, Wahoo and many other on-wheel resistance trainers.
  • The true length of the axle shaft is 170mm. 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 1.75 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 5mm hex wrench.

COMPATIBLE WITH

Cervelo - Caledonia & Aspero & others

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 8871832449

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ArcTuba
Lexington, US
★★★★★ 5
Dealer wanted $200, Changed them in 5 min
Color: gray
Good quality, saved a lot of money over having a dealer or mechanic change them.
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Reviewed in the United States on May 13, 2026
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Dennis
Phoenix, US
★★★★★ 5
As good as the original
Color: gray
Perfect fit engine air filter and cabin air filter.
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Reviewed in the United States on January 9, 2026
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chris gann
Pawtucket, US
★★★★★ 4
Nice price for a good product
Color: gray
They’re a great fit at a good price I’ve used them before and I put them in before I have my oil change done because otherwise they try to charge you like lots of money for both of those when it takes five minutes max to get them both in your car
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Reviewed in the United States on April 1, 2026
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Chaleff
Port Orchard, US
★★★★★ 5
25’ Impreza
Color: gray
Good fit on both filters. Easy install 25’ Impreza RS
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Reviewed in the United States on April 27, 2026
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Bobbi
Phoenix, US
★★★★★ 5
IMPRESSED!
Item Package Quantity: 1, Item Package Quantity: 1
I bought this for my Honda civic 2017 lx 1.5 and it is a perfect fit. I didn’t realize how important it is to change it. Let me tell you if you are thinking about buying this, it’s your sign not JUST because of health which is vital and first and foremost but the PRICE! At any oil change or auto shop they will charge no less than 50$ and I’ve seen higher. I will continue to buy this brand. I will update in my next 5,000 miles. 8.00$ or 50$+ and the quality is EXACTLY the same, your choice.
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Reviewed in the United States on April 3, 2026

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