Stainless Steel 11T Motor Pinion Gear for 1721 Purple Viper Brushless Motor 0.4 Mod 2mm Shaft Two Pack Durable Precision Ground Pinion for Smooth Engagement Improved Motor Efficiency Torque and Longevity for RC Cars and Drones

Stainless 11T 0.4mod Pinion for 1721 Viper Motor (Two Pack)
✔️ Durable stainless steel, 0.4mod 11T, fits 2mm shafts, Two Pack

These precision-ground stainless steel pinion gears are designed for high-precision engagement with the INJORA 1721 Purple Viper Brushless Motor, 0.4 module and 2mm shafts. This two-pack upgrade helps improve motor efficiency and longevity in RC cars and drones.

✅ Durable stainless steel construction resists wear and corrosion
✅ 0.4 mod, 11T gear size for precise gear ratio on 2mm shafts
✅ Specifically compatible with INJORA 1721 Purple Viper brushless motor
✅ Pack of 2 for easy replacement during upgrades

💡 What is a pinion gear used for in RC motors and how does it affect performance?

- It transfers motor rotation to the drivetrain, setting the gear ratio and top speed
- Material choice affects wear, efficiency, and longevity in high RPM use
- Stainless steel pinions deliver durability for RC cars and drones; handy for long-term use