Precision 21T Pinion Upgrade - Hobbywing 30820201 - 21T 5mm 48P Steel Pinion Gear for RC Models  [HW-30820201]

HOBBYWING 21T 5mm 48P Steel Pinion Gear - 30820201
Price:
£0.00
Brand:
Hobbywing
Model:
HW-30820201
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Hobbywing 21T pinion for precise gearing

The Hobbywing 21T 5mm 48P Steel Pinion Gear is crafted to improve drive accuracy in 1/10th scale RC cars. Its hard anodized chrome steel body and 48-53HRC hardness deliver strong wear resistance for repeated high-speed runs and rough conditions.

Select Gear Ratio to Suit Conditions

Replacing the pinion lets you refine the balance between pulling power and top speed. Lower tooth counts favour torque for technical sections, while higher counts suit fast straights and race layouts.

Specifications

  • Bore Diameter: 5mm
  • Modulus: 0.53
  • Material: 40CR Steel

Suitable Models

This 21T pinion is compatible with numerous 1/10th scale platforms, including models such as the TRAXXAS 1/10 SLASH 4x4. It is a straightforward fit for many short course and monster truck applications requiring a 48P, 5mm pinion.

How do I check correct gear mesh?

Set mesh so there is a small, even gap between pinion and spur when pressed together, then rotate to ensure smooth engagement. Use a strip of paper to gauge clearance if needed.

Are there upgrade paths from this pinion?

You can change to higher or lower tooth counts within the same 48P pitch and 5mm bore to tailor performance, or pair with a hardened spur for greater durability.

What should I inspect after installation?

After fitting, check for smooth gear engagement, look for any wobble on the shaft, and run a short test to confirm temperatures remain acceptable.

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