ProTek RC Aluminum Clamping Servo Horn (Black) (25T-ProTek)

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This is a replacement ProTek R/C Aluminum Clamping Servo Horn, intended for use with ProTek R/C servos. This extremely tough servo-horn has been machined from a solid block of aluminum for incredible precision, rigidity and durability. The horn features a clamp type design that grips the servo’s output shaft so if the retainer screw comes loose, the horn will have a better chance of remaining in place, increasing your chances of finishing the race! Plus, the horn has a 3.5mm thick arm for durability, with 16.5mm and 20mm hole spacing threaded for 3mm hardware to suit the geometry and hardware requirements of most vehicles. Package includes one black anodized servo horn, 3x10mm button head screw, 2x7.5mm clamp screw and a star lock washer.


  • Clamp design
  • 16.5mm and 20mm hole spacing (measured from output shaft screw hole, to linkage rod holes, center to center)
  • 3.5mm thick arm
  • 31mm Overall length
  • Linkage holes threaded for 3mm hardware
  • 25T Spline ProTek Output Shaft

ProTek R/C is an AMain Sports & Hobbies brand.

This product was added to our catalog on April 17, 2014

Verified Owner
Friday, Feb 20 2015 (about 5 years ago)
ProTek RC Aluminum Clamping Servo Horn (Black) (25T-ProTek)
Protek put a 24T servo horn in a 25T labled bag. is this a one off?. Update : Amain refunded my money into a store credit. Very happy with the level of customer service and contact made. Hope this is a one off as Protek make great gear and at the best price point.
Fits Holmes Hobbies servos but not others.
Verified Owner
Friday, Sep 15 2017 (about 2 years ago)
ProTek RC Aluminum Clamping Servo Horn (Black) (25T-ProTek)
Stout servo horn, I'm running one on a truggy, two 1/8 buggies and a 1/10 4wd mod buggy. Not a single issue wtih any of them. Very strong.
Verified Owner
Tuesday, Dec 30 2014 (about 5 years ago)
ProTek RC Aluminum Clamping Servo Horn (Black) (25T-ProTek)
Great servo horn goes really well with my savox 1230
Verified Owner
Sunday, Apr 17 2016 (about 3 years ago)
ProTek RC Aluminum Clamping Servo Horn (Black) (25T-ProTek)
It actually looks a lot better than I thought. I bought it for functionality for my JQ Products THE Car RTR after the plastic servo horn kept stripping. Aluminum is very good for this application. Plastic servo horns are really only acceptable with the design that TLR, and other, kits use where the plastic horn goes over a metal 25T spline nut that then goes over your servo. Excellent value and quality. The dual screw clamp design is what you want!
Verified Owner
Sunday, Feb 15 2015 (about 5 years ago)
ProTek RC Aluminum Clamping Servo Horn (Black) (25T-ProTek)
Badass servo horn, put this in my Ofna TS2, it works great and looks the part!