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Aluminium Servo Horn (15mm-25T) - Optima Mid (Futaba) — image 1 of 5
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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 Futaba – KOS04318

Brand: Koswork

Part No: KOS04318

£18.42 RRP £19.39

Usually ships within 4-5 days

UK Delivery
Get it by Monday 14th Sep (Order within 13h 12m)
Store Collection (Cannock)
Friday 11th Sep, once stock arrives
Collect Instore

Finance options available at checkout.

Description

The Koswork Aluminium Servo Horn (15mm-25T) – Optima Mid (Futaba) is a compact aluminium horn featuring a 15mm arm and a 25T spline for Futaba-type servos. Identified by part number KOS04318, it offers a tidy solution where a short servo arm length is preferred.

Key Points

  • Aluminium construction
  • 15mm arm length
  • 25T spline (Futaba)
  • Brand: Koswork
  • Part number: KOS04318

Suggested Compatibility

Suggested compatibility includes:

  • Optima Mid (as referenced in the product name)
  • Servos using a 25T Futaba spline

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

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.

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