Overview
The Robinson Racing 21-Tooth Extra Hard Steel Pinion Gear delivers dependable performance for 1/10 scale RC vehicles. With a 5mm bore and 0.8 module pitch, this precision-machined pinion is designed for modern brushless motor systems and steel spur gear combinations.
Constructed from high carbon steel and heat-treated for superior hardness, this pinion is built to handle the demands of powerful motor setups. The 21T count provides excellent acceleration while maintaining respectable top speed.
Key Features
- Extra hard high carbon steel
- Heat-treated for durability
- 5mm bore diameter
- 0.8 module pitch (32P compatible)
- Precision CNC machined
Performance Benefits
- Strong acceleration performance
- Excellent torque output
- Long service life
- Smooth, quiet operation
Usage Notes
Designed for GEN3 steel slipper systems. The 21T provides more torque than higher tooth counts. Pair with hardened steel spur for optimal durability. Suited for 1/10 scale applications.
Technical Specs
- Tooth Count: 21T
- Bore Size: 5mm
- Module/Pitch: 0.8 Module
- Material: Extra Hard High Carbon Steel
Fitment
- Traxxas Slash 4x4, Stampede 4x4
- Associated, HPI with 5mm motor shaft
- 1/10 Scale RC cars and trucks
What's Included
- 1x Robinson Racing 21T Extra Hard Steel Pinion
- 1x 4mm Set Screw
Summary
The Robinson Racing 21T Extra Hard Pinion delivers reliable torque-focused performance for demanding 1/10 scale RC applications.
