RC servo spline chart

RC servo spline chart Articles
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Here is a listing to help you to select the right horn for your servo.


Pay close attention to your servo, some servos are rebadged servos from other brands. This is the case of the Hobbico CS-170 that uses 24 splines (Hitec) instead of 25 splines traditionally found on Hobbico servos.

  • Ace/Thunder: 25T
  • Airtronics: 23T
  • Blue Bird: 25T
  • Cirrus: 25T
  • Duratrax: 25T
  • Futaba: 25T
  • Hitec: 24T
  • Hobbico: 25T (Some servos like the CS-170 uses 24 splines)
  • HPI: 25T
  • Jr: 23T
  • KO: 23T
  • MRC: 23T
  • Multiplex: 23T
  • Power HD: 25T
  • Sanwa: 23T
  • Savox: 25T
  • Spektrum: 23T
  • Tamiya: 25T
  • Team Associated: 25T
  • Tower: 25T
  • Traxxas: 25T
  • Xpert: 25T


Sylvain Lafrance

Hello, my name is Sylvain Lafrance and I am the man behind MyRCBox.com. I have bought my first hobby grade RC in the early 90s. With years, what that started as a simple hobby, quickly became a strong passion. I am so much passionate about R/C that I have created MyRCBox.com in 2006 to share my experiences with R/C products that I use for racing and bashing. Follow me !

This Post Has 7 Comments

  1. Avatar

    Hyperion servos DS20 UMD , what spline are they similar to. Also I,ve been told that Savox & Futaba servos spines are the same, is that true? Thankyou!

  2. Avatar

    How many splines on twisted hobbys ICE 14g servos?

    1. Sylvain Lafrance

      I googled to find some information, unfortunately, I didn’t find any info.


  3. Avatar

    Where can I find drawings for this? I want to make a custom splined hole in aluminium using a CNC VMC or EDM. Please help.

    1. Sylvain Lafrance


      I’m sorry but I don’ t know where you could find drawings for this kind of work.


  4. Avatar

    Hitec has changed a lot over to h25t/25t recently. Notably their D series and HSR/HSB servos. Along with HS series servos ending in 8, like the HS-318.

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