RC servo horns, 25T

Quick overview

A loose or damaged steering arm can turn a straightforward RC repair into a parts hunt. These 25T aluminium servo horns are designed as replacement arms for RC models.

The pack contains five horns, which gives you spares for a rebuild or more than one project.

Their listed total length is 37 mm, with M2.5 threads and hole-centre spacing options of 15 mm, 20 mm, 25 mm and 30 mm.

Best use cases

These arms are intended for RC cars and trucks, including 1/8 and 1/10 models, the listing also mentions boats and other RC models, including FPV builds. If you’re matching a steering linkage, the different stated hole spacings give you more than one position to consider, rather than a single-spacing arm. For example, you could compare the linkage’s mounting points with the 20 mm or 25 mm spacing before fitting the horn.

The arms are made from aluminium alloy and CNC-machined, according to the product details. That may suit a replacement where you want a metal part, but the listing does not provide a weight or durability rating to compare with other materials.

Tips for day-to-day use

Before ordering, match the horn’s 25T spline to your servo and check that the M2.5 thread and hole spacing suit your linkage. The stated compatibility includes Futaba, Savox, Power HD and HSP servos, but exact model numbers aren’t listed. Keep in mind that the product details don’t say whether mounting screws or other fitting hardware are included, so don’t assume they come in the pack.

When setting up the steering, choose the hole spacing that aligns with your existing linkage rather than forcing the rod to an awkward position. It suits you if you need several replacement arms and the listed dimensions match your model. It may not be the best choice if your servo uses a different spline or your setup needs a length or thread specification that isn’t listed.

Buying questions

How many servo horns are included? The package quantity is five.

What hole-centre spacings are listed? The listed options are 15 mm, 20 mm, 25 mm and 30 mm. The total length is 37 mm.

Which servos are named as compatible? The product details name Futaba, Savox, Power HD and HSP servos, along with others. Check your specific servo’s spline before choosing a replacement.

Is it worth it?

This set makes most sense when you need a 25T replacement arm, want several pieces on hand and can match the 37 mm length, M2.5 thread and hole spacing to your RC model. The five-piece quantity is useful for spares or multiple repairs, but it’s not a substitute for confirming the servo fit: the compatibility notes don’t identify exact models. If your current arm’s dimensions line up with the listed options, it’s a practical parts choice, if they don’t, a horn specified for your exact servo and linkage is the safer route.