25T Aluminium Servo Arm Upgrade for Kyosho Motorcycles KM025TM26 by GPM  [KM025TM26]

Precision aluminium servo arm kit

The KM025TM26 two-part kit swaps out plastic control arms on Kyosho motorcycle models for aluminium replacements, giving a firmer link between the 25T servo spline and steering linkage. It includes matched arms in the common C8 and C10 footprints seen on Kyosho bikes.

Installation is straightforward: remove the OEM arm, locate the aluminium piece on the 25T spline, then secure with the original retaining screw or supplied hardware. Only a standard hex driver is normally required for the job.

Performance notes: aluminium reduces flex under load versus factory plastic, delivering steeper steering response and steadier centring during aggressive throttle or sudden braking. These parts focus on improving control feel rather than altering geometry or servo output.

Maintenance advice: check screw torque after initial runs, inspect spline engagement for signs of wear, and retain or reapply thread locker if the original assembly used it. A light corrosion protectant will help if models are used in wet conditions.