Underdrive And Overdrive Alloy Steel Helical Gear Set For One Eighteenth Scale TRX4M RC Car CNC Machined 20CrMo Gears 24T And 10T Reduces Vibration And Wear Smoother Power Delivery And Quieter Operation Durable Upgrade

Underdrive and Overdrive 20CrMo Helical Gear Set for TRX4M ✔️ CNC machined 20CrMo alloy steel gears, 16.7% underdrive option

Designed as a high-strength gear upgrade for 1/18 scale TRX4M models, this underdrive/overdrive gear set uses CNC machined 20CrMo alloy steel helicals to cut vibration, wear, and noise. It can be fitted to either the front or rear axle for improved drive feel and torque delivery.

✅ 20CrMo alloy steel CNC machined gears
✅ 16.7% underdrive ratio for front or rear axle
✅ Helical design delivers smoother operation and added strength
✅ Quieter, lower wear compared to stock spur gears

💡 What is an underdrive and overdrive gear set used for in RC cars?

This handy upgrade explains the main benefits and use cases.

• Enhances torque distribution and steering response on TRX4M
• Reduces vibration, noise, and wear with CNC machined 20CrMo gears
• Allows front or rear axle upgrades for flexible performance

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