ProTek RC 4mm Aluminum Short Clamping Servo Horn (Black) (25T)

ProTek RC 4mm Aluminum Short Clamping Servo Horn (Black) (25T)
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This is a ProTek R/C 4mm Aluminum Short Clamp Lock Servo Horn, and is intended for use with any servo that uses a 25 tooth spline output shaft. This extremely tough servo-horn has been machined from a solid block of aluminum for incredible precision, rigidity and durability. This horn features a clamp type design that grips the servo’s output shaft with enough force that even if the retainer screw comes loose, the horn will remain in place, increasing your chances of finishing the race! Additionally, the arm is 4mm thick for durability, has 15mm and 19mm hole spacing and uses 3mm hardware to suit the geometry and hardware requirements of most vehicles.

This servo horn is an excellent upgrade for any Axial rig that uses the Axial AXI30836 servo horn, including the SCX10 II, RR10 Bomber, Wraith and Yeti vehicles. The horn is identical in size and specifications to the Axial AXI30836 servo horn, but the ProTek uses larger 2.5mm clamp screws, compared to the smaller 2mm clamp screws included with the Axial horn.

Features:

  • Same hole positions and overall dimensions as Axial AXI30836 servo horn! But ProTek uses larger 2.5mm clamp screws instead of the smaller 2mm clamp screws included with the Axial horn.
  • Clamp design
  • 15mm and 19mm hole spacing (measured from output shaft screw hole, to linkage rod holes, center to center)
  • 4mm thick arm
  • 30.5mm Overall length
  • Linkage holes threaded for 3mm hardware
  • 25T Spline Futaba/Orion/Savox/ProTek Output Shaft

This product was added to our catalog on August 14, 2014

Verified Owner
Wednesday, Nov 25 2020 (8 months ago)
ProTek RC 4mm Aluminum Short Clamping Servo Horn (Black) (25T)
USE PROTEK SERVO HORNS FOR PROTEK SERVOS ONLY- DO NOT USE PROTEK SERVO HORNS FOR OTHER BRAND SERVOS (25T-Futaba/Savox etc.) Installed on a ProTek 100SS 1/10 scale 2wd buggy steering servo. Good fit to this servo, whereas some other brand aluminum servo arm "spline openings" are slightly larger than the ProTek servo horn, causing it to be loose or difficult to tighten down, causing them to be loose or strip out trying to tighten them down.
Good fit, look and quality; and the clamping screws are larger and don't strip out.

25T-F Tried to install on a Savox sc-1257-TG and it wouldn't even go on the spline. Don't buy for a Savox servo.

The 2 reasons I still rated it 3 stars after the Savox issue are:
1)It really was the best servo arm for the ProTek servo horn, and I tried a few,
2) The same reason I buy from Amain. I let them know about the Savox issue and they took good care of me.

Update: 2/4 Recently purchased the MKS HBL 550LX- Awesome servo.(25T) This servo arm didn't fit on this servo as well.
Friday, Apr 16 2021 (3 months ago)
ProTek RC 4mm Aluminum Short Clamping Servo Horn (Black) (25T)
Excellent servo arm! Fit and finish is excellent, nicely machined and very strong. It is a tight fit on some servos, as mentioned, but it DOES fit - you just might need to use a little 'muscle' to get it on. It fits perfectly on my Reefs Triple 4 and the double clamping screw means it will stay put. Very happy with this servo arm!