Yokomo BM-4821A Hard Steel Pinion Gear DP48-21T Precision Replacement  [BM-4821A]

Yokomo BM-4821A Hard Steel Pinion Gear DP48-21T
Price:
£4.61
Brand:
Yokomo
Model:
BM-4821A
GTIN:
0639342205882
Condition:
Brand New
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Precision Pinion for Tuners and Repair Work

The Yokomo BM-4821A Hard Steel Pinion Gear DP48-21T is aimed at builders who want a durable, precisely cut pinion. The hard steel material helps preserve tooth form and keeps gear engagement consistent over time.

Performance Traits of 48 Pitch 21T

A 48 pitch specification with 21 teeth suits many standard 1/10 drivetrains, offering a middle ground between acceleration and top speed for track and street applications.

Material Choice and Longevity

Hard steel is favoured for parts that face repetitive stress because it resists wear and reduces the risk of failure under load, helping maintain reliable drivetrain function.
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.

How do I confirm the DP48-21T matches my spur gear?

Match the 48 pitch designation to your spur and confirm the tooth count works with your gearing goals; also check clearance in the gear box to ensure proper fit.

Will this pinion damage a softer spur gear?

Hard steel is tougher than many spur materials, so maintain correct mesh and inspect the spur periodically; correct setup prevents accelerated wear on the mating gear.

Any tips for installing the pinion?

Set a good motor-to-spur mesh with fine adjustments, secure the pinion to the shaft tightly, and spin the drivetrain by hand to check for smooth engagement before powering up.

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