Your Cart: £0.00

Spend £100.00 more for free shipping!

View Cart and Checkout
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba) — image 1 of 5
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba) — image 2 of 5
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba) — image 3 of 5
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba) — image 4 of 5
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba) — image 5 of 5
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba)
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba)
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba)
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba)
Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba)

Koswork Aluminium Servo Horn 15mm 25T - KOS04318

Brand: Koswork

Part No: KOS04318

£18.42 RRP £19.39

Usually ships within 4-5 days

UK Delivery
Get it by Monday 5th Oct (Order within 22h 50m)
Store Collection (Cannock)
Friday 2nd Oct, once stock arrives
Pre-Order

Finance options available at checkout.

Fits These Models (5)

Show all 5 models

Description

The Koswork Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba), part number KOS04318, is an aluminium servo horn for radio-controlled models. Its bottom-mount design lowers the leverage point to reduce the load transmitted to the servo, while the 15mm hole-to-hole length provides a smoother steering response. The horn is designed to move freely without rubbing against the radio plate and uses a clamping-style fit secured with a large M2.5 screw. Its 25T spline offers suggested compatibility with Futaba, XP Digital, Reedy, Savox and ProTek servos. Although designed for the Kyosho Mid Optima, it may also suit other applications as suggested compatibility. It is intended as a direct replacement and upgrade for a stock plastic servo horn.

Features

  • Aluminium construction
  • 15mm hole-to-hole length
  • 25T spline
  • Bottom-mount design
  • Clamping style with large M2.5 screw

Specifications

Koswork Kyosho Option Parts Compatibility Chart

Features:

*Designed to minimize forces transmitted back to the servo spline
*Bottom mount design to lower the leverage point and decrease the load on the servo
*Made of high quality aluminum
*Much stronger than the stock plastic horns
*Hole to hoel length 15mm for smoother steering response
*Designed to move freely, without rubbing the radio plate
*Clamping style with large m2.5 screw
*Although this horn was designed specifically for the Kyosho Mid Optima, it can also be used in most other applications
*25T fits Futaba, XP Digital, Reedy, Savox and ProTek servos
*Direct replacement & upgrade

*Made In Taiwan

*Cars, parts, accessories & others are not included.*

SPECIFICATION

Key Info:
  • Brand: Koswork
  • Part No: KOS04318
  • Barcode: 4710588225950
  • Fitment: Option Part

Delivery & Returns

Standard Shipping

£3.95 to most of the UK

Express Shipping

£6.95 to most of the UK

Worldwide Shipping

Available at checkout

Customer Reviews

3/5 (1 review)
Nigel Harvie
26th January 2026

Product gets a 2 star because it rests on the belt guard very tightly and is a terrible fit on the Turbo Optima Mid Special. Not sure about the other variants.
5 stars for the service and always a pleasure to deal with. Thanks.

Write a Review
All reviews are subject to moderation

Questions & Answers

No questions yet, why not ask one?
Ask a Question
Get early access to deals and new arrivals.
Use this form to ask us a quick one sentence question about this specific product. Do not enter anything you would not like displayed on our site.

For more in depth queries, please contact us.