The Koswork 15mm aluminum servo horn (23T) was specifically designed for the Kyosho Optima Mid , but is equally well-suited for all RC vehicles that use a 23T servo output profile – including Sanwa, KO Propo, JR, and Airtronics servos . It replaces the stock plastic horn with a significantly more stable, precise, and durable solution.

The ingenious bottom-mount design lowers the leverage point, reduces backforce on the servo spline, and thus relieves stress on the entire steering servo. At the same time, the 15 mm hole-to-hole length ensures exceptionally smooth, controlled, and precise steering – ideal for demanding setups on the track or in competition.

The clamping design with a large M2.5 clamping screw guarantees a secure hold even under extreme load. Furthermore, the horn is designed to move freely without rubbing against the radio plate or other components.

Perfect as a direct upgrade for increased durability, accuracy, and performance.

Highlights

• Suitable for 23T servos : Sanwa, KO Propo, JR, Airtronics
• Specifically designed for Kyosho Optima Mid – but universally applicable
• Bottom-mount design reduces stress on the servo output.
• Made from high-quality aluminum – significantly more stable than plastic
• 15 mm hole-to-hole – smoother & more precise steering feel
• Freely movable without touching the radio record
• Clamping style with large M2.5 screw for a secure fit
• Direct upgrade, easy installation