How Many Thru-Axle Combinations Exist in the World?

A Deep Dive into the Numbers

If you’ve ever shopped for a replacement thru-axle, you’ve probably experienced the dizzying variety of options. Different diameters, hub widths, thread pitches, head shapes… and that’s before you get into brand-specific quirks. It’s no wonder cyclists sometimes end up buying two or three axles before finding the right one.

But have you ever wondered — just how many different thru-axle specifications are out there? Let’s break it down for you. 🤸🏻🤸🏽🤸🏼

We're just kidding. The truth is you can’t get a single absolute number as there can be unlimited combinations and variables when it comes to thru axles. But we could do a rough calculation of the minimum possible spec combination.

• Axle diameter options (M12/M15/M20) : 3 

• Head diameter (typically range from 19~24mm): 6

• Thread pitch/type (P1.0/ P1.5/ P1.75): 3

• Thread length (roughly): 20 options

• Head/seat shape (Flat/ Conical): 2
  
  3 × 6 × 3 × 20 × 2 = 2,160 combinations
  
  
  

  Wild, right?  And that’s not even counting the funky thread and custom designs.
  We’re teaming up with Bike Matrix to map every axle on the planet 🌍.
  
  Soon, you’ll just tap the bike icon, pick your ride, and boom—your perfect axle, no guesswork. 🚴🔧