M12x1 142-148-Spacer

Thru Axle


Burley’s official adapter for bikes with a 12mm thru axle. Stock thru axles are not able to accommodate any sort of axle mounted hitch system. The Burley Thru Axle is a requirement for any axle mounted hitch system with a bike that has a 12mm thru axle. Our new Thru Axles have an external male threading on the end to accommodate the installation of our axle mounted hitch system.

Thru Axle Fit Guide: Download Here

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At Burley, we want to make sure that everybody has the opportunity to take a trailer with them on every adventure. The Burley Thru Axle is our solution to bikes equipped with a 12mm thru axle. Male threading on the end allows a hitch to be attached, and any Burley trailer can then be used with a thru axle bike.


  • Official Burley adapter for bikes with 12mm thru axles
  • External male threading to accommodate the installation of our axle mounted hitch system
  • Quick and easy one-time installation


Available sizes of the Thru Axle include:

  • 12 x 1.0, 142-148mm
  • 12 x 1.5, 142-148mm
  • 12 x 1.75, 142-148mm
  • 12 x 1.75, 197mm
  • 12 x 1.5, 197mm

If you are unsure of the correct thread pitch or hub length, please consult with the manufacturer of your bike, or your local bike shop before purchasing a Burley Thru Axle.

Additional Information

Thru Axle Specs

12 x 1.0, 142 – 148mm, 12 x 1.5, 142 – 148mm, 12 x 1.75, 142 – 148mm, 12 x 1.75, 197mm, 12 x 1.5, 197mm

Thru Axle is rated 5.0 out of 5 by 3.
Rated 5 out of 5 by from Great Axle The thru axle fit perfectly and I was super appreciative of the printable page to pick the right length and thread choice. FYI, luckily I checked my printed page to a real ruler and realized I needed to print the page larger than 100% to have the scale accurate. I thought the price on axle too steep, but little choice
Date published: 2017-11-27
Rated 5 out of 5 by from Works as it should Had a little trouble figuring out which thread size to buy. Works as it should. Pricey.
Date published: 2017-10-10
Rated 5 out of 5 by from Works great on my Ibis Mojo HD My HD has a 142x12 thru axle and this worked like a charm.
Date published: 2017-10-30
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