Lightning Bolt-on Axle – 15mm Front for FOCUS R.A.T. Bikes

(11 customer reviews)

$ 52.00

After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle we needed 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.

This FRONT thru axle is compatible with the Mares/Izalco bikes that have the 15mm FOCUS R.A.T. thru axle system. 

In stock

Get 20% Off Lightning Bolt-on Axles With Purchase of Any Trailer or Trainer Axle! Discount Automatically Applied.
SKU: LIG509.F Category:


  • Be free. No longer are you constrained by the proprietary FOCUS R.A.T. axle. Simply replace the R.A.T. nut with our threaded nut and thru axle. A complete solution for a standard threaded axle for your R.A.T. equipped bike.
  • 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.



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


  • This axle is compatible with bikes that have a FOUCS R.A.T. thru axle in the front fork with 15×100 front hubs.
  • Weight: 56 grams, includes axle and our replacement for the RAT nut.
  • 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 6 mm 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?

11 reviews for Lightning Bolt-on Axle – 15mm Front for FOCUS R.A.T. Bikes

  1. Terry Evans (verified owner)

    I only have Great Things to say about The Robert Axle Project Company and their front and rear axle option , I ride a 2015 Focus Mares CX Bike with the R.A.T. thru axle system. By replacing the R.A.T. thru axle with the Lighting Bolt-On Axle I have removed all of the inconsistency that I was having. The fit and finish of the lightning bolt-on axle is top of the market.

  2. Leithen M’Gonigle

    Really great product. My Izalco Max Disc was having issues with the RAT thru axles and I couldn’t find replacements here in Canada, despite trying. While I did like the RAT axles, these are a far superior and more durable solution. Also, really great build quality. Thank you!

  3. Rafal (verified owner)

    The best solution for R.A.T Axle! Finnaly front wheel has a perfect stiffness, axle from Robert works and looks perfect!!!

  4. Dave (verified owner)

    Fantastic replacement for the R.A.T thru axle system. Two thumbs up!!
    My daughter rides a 2016 Focus Mares CX & on her first ride with the Robert Axle she noticed a superior difference in the stiffness of the front axle.
    Now time to order the rear – should have done both together
    Excellent product.

  5. John Bradley (verified owner)

    Lightning Bolt-on axles are a great products. While R.A.T. axles were initially appealing in concept, in practice not so much. The simplicity and high quality of Lightning Bolt-ons have resulted in lighter weight, more secure attachment (no more disc rub), better looking and more aerodynamic-what’s not to love?

  6. Redg (verified owner)

    My RAT Thru Axle had gotten a loose thread. The Lightning Bolt-on Axle replacement has a much better build, and locks in more securely. It works well that you can forget about it, and have more peace of mind while riding.

  7. Pawel (verified owner)

    This is what I needed instead RAT especially my Focus Mares 2015 has 15mm axle and it was impossible to find a 15mm nut in Europe. I wasn’t even waiting until RAT will be loosen. No problem with shipment to Poland. One week and my bike is upgraded. Great product and service! Thank you.

  8. Stephen Ratner

    OK…so I don’t know who actually liked the RAT Axle but I went through two of them before I heard about Robert Axle. Money well spent. So much easier to use and much stiffer feel on the trails – Focus CX Mares 2015. Bravo! Well done!

  9. The Barman (verified owner)

    Well made, excellent service

  10. david timoney (verified owner)

    Delighted with the service. Was delivered to Ireland in 2 days. It was replacing a Focus through axle that had broken and a replacement was almost impossible to source. Recommended.

  11. John (verified owner)

    Great solution to my focus cx mares RAT trap axles. Super simple to install and I appreciate the help!

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