Thunder Bolt-On Rear Axle – 12mm x 174mm x 1.75 Thread

(5 customer reviews)

$ 52.00

Designed for big rides and big riders. Our Thunder Bolt-On replacement thru-axles are a strong and durable option to replace your stock through axle. Thunder Bolt-On Axles are NOT for use with a trailer, but are a solid option if you’re looking to replace your stock thru axle with a more durable, lower profile design. If you want something more lightweight, then check out our Lightning Bolt-On Axles.

This is NOT an axle for attaching trailers or trainers.

Out of stock

SKU: BOL201 Category:


If you’re tired of having a thru axle that sticks out far past your hub, but you’re skeptical of ultra-lightweight parts, then the Thunder Bolt-On Axle may be for you. Simple, clean, and very strong, these bolt-on thru axles are a perfect alternative to your stock thru axle. Easy to install and remove, too!

If you want something more lightweight, then check out our Lightning Bolt-On Axles.


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


Thunder Bolt-On Axles replace your stock thru axle on your 12 mm thru-axle equipped bike.

  • The diameter of this axle is 12 mm and the true length of the axle shaft is 174 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 12×142 hub does not equal a 142 mm long axle.
  • This axle has a 1.75 mm thread pitch.
  • Weight: 62 grams
  • The axle is precision CNC machined in the USA from 7075 aluminum and hard anodized for rugged durability. Our axles are built to the tightest standards in the industry.
  • 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?

5 reviews for Thunder Bolt-On Rear Axle – 12mm x 174mm x 1.75 Thread

  1. Jay H (verified owner)

    Works great. Fit and thread pitch exactly as advertised to match my bike and weighs exactly the same as the QR it replaced.

  2. Matthew Jamison (verified owner)

    Look no further! I ride a 2016 Commencal Meta V4, I am 6’5″ and weigh in at 220lbs. In 3 months I had broken 2 Sram Maxles. I needed something significantly more heavy duty. A Google search led me to the Robert Axle Project and I haven’t had a single problem since! I would highly recommend this axle for anyone looking to upgrade to something more substantial. Very happy with this purchase.

  3. Brad H (verified owner)

    I was having problems with the qr axle loosening, This solved the problem. Quick shipping. Arrived and worked, as indicated. I am pleased with the product.

  4. Adam (verified owner)

    Working no problems with Kona dropouts CMPHCC142 & CMPHCCND142

  5. Michael Reimer (verified owner)

    Works very well. Immediately eliminated the loosening that the previous thru-axle was happening every ride. Very well built piece of essential equipment.

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