Yokomo YOKPG4825 Precision 25T Pinion for 48-Pitch Systems  [YOKPG4825]

Yokomo PG-4825 - Precision Pinion Gear 48 Pitch 25T Ultra-Hard
Price:
£7.38
Brand:
Yokomo
Model:
YOKPG4825
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Accurate 48-Pitch Pinion for Consistent Engagement

The Yokomo YOKPG4825 is a 48-pitch pinion tailored for RC drivetrains that require standard 48-pitch components. With 25 teeth and an ultra-hard finish, it is built to provide steady engagement and resist wear across regular use and tuning changes.

Its primary role is to set the motor-to-spur ratio, so any change to the pinion alters acceleration behaviour, top speed potential, and motor load. During fitment, confirm shaft compatibility and align the gearbox faces to achieve a clean mesh with minimal backlash.

Use the YOKPG4825 when you need a rugged 25T option for precise ratio adjustments. Regular inspection after runs, debris removal from the mesh area, and careful lubrication of the spur interface will help preserve performance and tooth condition.
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

Which motor shafts and keying types work with this pinion?

Confirm the shaft diameter and whether a D-shaft, keyed shaft or grub screw fit is required; the pinion will fit standard 48-pitch setups provided the shaft dimensions and fastening method match.

How should I check and correct mesh alignment?

Set the pinion against the spur with minimal running clearance, rotate the drivetrain while observing contact, then tighten the motor mount while maintaining that position to prevent misalignment.

What signs indicate the pinion needs replacement?

Look for rounded or chipped teeth, uneven wear patterns, or persistent noise in the mesh; any of these suggest the pinion should be replaced to avoid further damage.

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