Lightning Bolt-on Axle – Rear 12 mm x 229 mm x 1.75 Thread

(9 customer reviews)

$ 48.00

After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle (including ourselves) we needed a better option.

Our Lightning Bolt-On thru axles offer the highest quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle equipped bikes. Learn about compatibility with Hexlox security systems.

SKU: LIG607 Category:


  • Lightning is Better. Our front and rear Lightning Bolt-On axles offer a stronger, more durable, lower profile and lighter weight option to replace your stock thru-axles.
  • Low Profile. No more bulky handles to strike trail obstacles. Aerodynamic design.
  • Light Weight. Our axles are internally bored to remove unnecessary material without compromising strength.
  • Easy to install. Our matching front and rear Lightning Bolt-On Axles only require a standard 6 mm hex wrench for easy installation and removal.
  • Better Tolerances. Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing. No longer will your axle loosen while riding.
  • Available Security. Learn about compatibility with Hexlox bike security systems.

This is NOT an axle for attaching trailers or trainers.



  • The diameter of this axle is 12 mm and the true length of the axle shaft is 229 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 12×197 hub does not equal a 197 mm long axle.
  • This axle has a 1.75 mm thread pitch.
  • Weight: 52 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 6mm hex wrench.
  • Designed, built and quality tested in the USA. Proven around the world.
  • Learn about compatibility with Hexlox security systems.


Need more information about how our axles work?

9 reviews

  1. Matt Fairbank (verified owner)

    Quality axle. Great price. Excellent customer service.

  2. Michael (verified owner)

    Dear all!
    I’m very happy – after a long time of searching – to have found this axle suiting my fatbike. It fits perfectly, is really light and – finally – there’s no more lever that’s disturbing the look of the bike. Perfect quality and super-fast shipping within 5 days from USA to Germany – okay, German customs took another 10 days 😉
    Thanks a lot for your support!!!
    Greets from Germany!

  3. Pablo Acuña (verified owner)

    Hello friends!
    This is my assessment of your product:
    Excellent quality, very good price, shipping without setbacks.
    Perfect as a replacement for a shaft with quick closing.
    Friendly and cordial treatment.
    Highly recommended if your intention is to improve your mountain bike.

    Warm greetings from the mountains of Old Europe.

  4. Mike (verified owner)

    I purchased 2 sets of thru-axles from The Robert Axle Project. One set was for a cross bike and the other for a fat bike. Thus far both have performed flawlessly. Especially noticeable is the weight difference and stiffness vs the stock axles. Thanks guys for a great product.

  5. Andy Episcopo (verified owner)

    So this is my second axle from Robert Axle Project. I put one on my Kona Big Honzo DL after the OEM skewer kept coming loose. My LBS, Tryon Bike, suggested these guys for an axle and I haven’t had an issue yet with it. Rear end tightened up and no more worries about hitting it on rocks or it coming loose in the middle of a ride.
    So I decided to buy one for my fatbike. It’s a locally made, small brand, so they weren’t on the Robert Axle site. I followed their fitting guides, ordered my axle, and after a few cold/wet rides, it’s the same story as my Honzo: rear end tightened up, no more worries about the skewer coming lose (same OEM one as the Honzo) and lower profile. If/when I get another thru-axle bike, my first upgrade will be to one of these axles.

  6. Ivan (verified owner)

    Its perfect for my Fat Bike

  7. Dominic Libby (verified owner)

    Excellent stuff. Strong low profile axle is just the ticket to give me peace of mind when I’m away from my bikes and they are locked to the rack. QR’s just make it easier for theft. I carry a mini tool so I decided it’s not much of a problem if I need to pull the wheel. I have one on my Stumpjumper also.

  8. Greg (verified owner)

    Perfect fit for my Motobecane Sturgis. I was looking for a replacement for the cheapie that came with the bike and would not stay tight. This was a perfect match and cleans up the look of the bike by getting rid of that large quick release lever. The quality is high and the threads match perfect. The axle stays tight and does what it is supposed to. Great product.

  9. Tom (verified owner)

    No one wants to go through that moment of snapping off the lever on their TA after getting a little overzealous, especially when you have a ride coming up. With the myriad of different sizes, standards, lengths, etc. the fact that you can go to one single source, find your specific bike is awesome. Combine that with getting a quality TA replacement (better than the original in fact) inside of a week? Win. (Scott “Big Jon” owner)

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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: $12.50 USD, 10-14 business days

• All other International: $12.50 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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