Thru Axle for BOB Trailer: 159 to 165mm with 1.5 Thread

Thru Axle for BOB Trailer: 159 to 165mm with 1.5 Thread

(9 customer reviews)

$ 46.50

Yes! A 12 mm thru-axle adapter for BOB Trailers. These Robert Axles for BOB Trailers are specifically engineered to attach the proven BOB Trailer to your thru-axle equipped bike.

Take full advantage of your modern bike with 12 mm thru-axles and harness the rigidity of the thru-axle to haul your BOB Trailer. Set out on any adventure, big or small. Great for off-road tours, trail building, hauling cargo and more!

SKU: BOB112 Category:


Since 2013, we have been an important part of cyclists’ adventures all over the world. Our BOB Trailer thru axles have millions of miles on them in mountain bikes and road bikes, carbon bikes, fat bikes and e-bikes. Our axles are specifically designed to handle the high-torque loads generated by e-bikes.

Our BOB Trailer axles are not just designed in the USA, but are made here as well. They are machined by avid cyclists, to the tightest standards in the industry. We safety test, to failure, every batch of axles we produce to ensure they exceed your expectations.

Additional information

Weight 0.3125 lbs


A thru-axle adapter for BOB Trailers! These Robert Axles for BOB Trailers are specifically engineered to attach your BOB Trailer to your 12 mm thru-axle equipped bike.

  • This axle is compatible with BOB Trailers.
  • The true length of the axle shaft is 165 mm, but can be shortened using the included spacers to 162 mm or 159 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 1.5 mm thread pitch.
  • The axle shaft and axle end are precision CNC machined.
  • The axle shaft is 7075 aluminum and hard black anodized for rugged durability.
  • The axle ends are stainless steel, which allow for mounting of the BOB Trailer bobbins.
  • No special tools required. Design allows for installation or wheel removal using your standard 5mm hex wrench.
  • Please note: This axle does not come with the BOB Trailer bobbins. Those are available separately, here. Or you can reuse your bobbins from the stock BOB Trailer Quick Release that came with your trailer.
  • Designed, built and quality tested in the USA. Proven around the world.


Need more information about how our axles work?

9 reviews

  1. James (verified owner)

    The folks at Robert Axle Project were super helpful and pointed me towards this axle for my Raleigh Tamland 2. Shipping was quick, install was easy, and product works great! Tested it out over 380 miles of rough terrain over 6 days and had 0 issues with it.

  2. Sherman (verified owner)

    Thank for the solution for my Jamis Renedade…wanted to use a BOB trailer for commuting and bike packing ..Super easy to figure out the axle thread and length with the printable Axle Finder on their website. Installation was a breeze. High quality machine work and I’m now looking at ordering axles for my fat bike.

  3. Brad (verified owner)

    Not enough stars lol perfect fit for my giant tcx advanced. Bob ibex is getting used:)

  4. Julien (verified owner)

    Purchased for a Bob Yak trailer and a Giant Tcx bike, it is perfectly suitable
    Excellent finish, solid materials, easy to install
    Tested on a 845 km trip in 8 days on paths, no signs of wear and tear.
    Just perfect

  5. Mark Devereux (verified owner)

    I’m using my axle on a Kona Sutra LTD. Easy enough to get the correct figment using the guides on the “Robert” webpage.
    The axle arrived in a very timely manner. Manufacture is flawless, as is the fit and finish. A very nice piece of kit.
    Only a test drive so far, but that was a 30 mile bumpy gravel ride with 30lbs in the trailer. Absolutely no problems. Looking forward to the first real touring test next week

  6. S. Caron (verified owner)

    Only option to add a rear rack to a 2018 Argon 18 Krypton CS. Quick international shipping and perfect fit. The web site was very informative and the confirmation provided by the online chat was welcome.

    The email from Argon 18 confirming the axel would not void the warranty sealed the deal. “We know them and their products are fully compatible.”

    Currently using the axle in combination with a conventional rear rack I already own, but upgrading to an Old Man Mountain rack is the next step.

  7. Paul (verified owner)

    Ordered the axle from The Netherlands.
    Delivery was fast and the axle fits my Genesis gravelbike perfectly. As a bonus my other bike turned out to use exactly the same length & thread pitch axle so I now can use it on both bikes 🙂

    Would definitely recommend!

  8. Peter Ford (verified owner)

    This axle fit my Giant Revolt perfectly allowing trouble free hauling of our Bob’s trailer over 100km of gravel hills.

  9. Austin Koontz (verified owner)

    The axle I received from the Robert Axle project was extremely useful and more or less met all of my expectations. The axle was shipped to me in a very timely manner, and with the instructions provided on the website, was very easy to install.

    I experienced only a very small issue in that the spacing of the bobbins on my new axle was ever so slightly wider than my B.O.B. Yak trailer fork–this wasn’t ultimately an issue, though, as with a little pressure the trailer would seat properly on the bobbins.

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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: $21.50 USD, 10-14 business days

• All other International: $21.50 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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25% Off Sitewide for BLACK FRIDAY! Now's the perfect time for some ultralight and stiff LIGHTNING AXLES, or our DRIVE THRU DUMMY HUB to keep your drivetrain sparkling clean!


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