Kyosho Motorcycle Aluminium 25T Servo Horn and C8/C10 Steering Arm KM025TM26 by GPM  [KM025TM26]

Aluminium replacement for servo horn and steering arm

The KM025TM26 two-piece aluminium set replaces factory plastic servo and steering arms on Kyosho motorcycle models, stiffening the connection between the 25T servo spline and steering linkage. It supplies arms in the widely used C8 and C10 footprints common to Kyosho assemblies.

Installation is direct on most Kyosho motorcycles: remove the original arm, place the aluminium arm onto the 25T spline, then secure using the original retaining screw or equivalent hardware. No specialist tools are required beyond the normal hex key for the servo screw.

Handling impact: using aluminium reduces flex under load versus the stock plastic parts, which helps produce clearer steering inputs and steadier centring during aggressive riding. These are hop-up parts aimed at improving control feel, not changing servo output or geometry.

Upkeep: check screw tightness after first runs, look for any spline wear over time, and preserve exposed aluminium with a small amount of protective spray if the model runs in wet conditions.