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

Hobbywing 21T pinion to sharpen drive response

The Hobbywing 21T 5mm 48P Steel Pinion Gear is made to improve the drive characteristics of 1/10th scale RC vehicles. Constructed from hard anodized chrome steel, it balances strength and precision while the 48-53HRC hardness rating helps resist wear during high-speed runs and tough off-road use.

Tune Gear Ratio for Torque or Speed

Swapping this pinion within the compatible tooth range gives straightforward tuning of torque versus speed. Selecting fewer teeth will favour acceleration and climbing, while more teeth push top speed, letting you tailor performance to your driving style or track.

Specifications

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

Model Compatibility and Fitment

This 21T pinion works with many 1/10th scale platforms, including setups like the TRAXXAS 1/10 SLASH 4x4. It fits short course trucks, monster trucks and other compatible models where a 5mm bore 48P pinion is specified.