Robert Axle Project Thunder Bolt-on Rear Axle - M12 x 1.5 - 229mm

Please note: When selecting the correct axle for your bike there is a handy Thru Axle Finder so you can easily find the exact axle you need. This can be found by scrolling down the page to the downloads section or by visiting the Robert Axle brand page on our website. If you are still unsure then please contact us before purchase.

The Robert Axle Project Thunder Bolt-On Axles are for the Clydesdale, the rider “lacking finesse” or those that just seem to somehow manage to break everything. The Thunder Bolt-on axle is literally solid aluminum providing the strongest thru-axle on the market.

- Designed for big rides & big riders.
- Available for all 12mm thru-axle hub “standards”, including fat bikes.
- Machined to the tightest standards in the industry.
- Designed, built & quality tested in the USA. Proven around the world.
- Available for rear wheel use only. Not designed to attach Trailers or Trainers.