Yokomo YOKPG4825 Precision Pinion Gear 48 Pitch 25T Ultra-Hard  [YOKPG4825]

Precision 48-Pitch Pinion for Tuning

The Yokomo YOKPG4825 is a precision 48-pitch pinion gear intended for RC-scale drivetrains where 48-pitch compatibility is required. Its 25T count and ultra-hard designation indicate a focus on tooth wear resistance and consistent mesh under frequent tuning changes; this part is designed as a direct replacement or spare for hobby vehicles running standard 48-pitch systems.

In practice the pinion's role is straightforward: it sets the motor-to-spur ratio and directly affects acceleration, top speed, and motor load. When installing, ensure correct mesh with minimal backlash to avoid premature tooth wear; check that the motor mount and gearbox face are parallel and that the pinion seats fully on the motor shaft before tightening.

For tuning, use the YOKPG4825 when you need a durable 25-tooth option for fine-grained ratio changes. Pairing it with appropriate spur gears and mindful mesh adjustment helps maintain smooth engagement and efficient power transfer. Routine inspection for burrs or chipped teeth and light lubrication on the spur/pinion contact area will extend service life without affecting gear engagement precision.