5-Pack 32DP 540 Motor Pinion Gears (12T-16T) 3.175mm Shaft for 1/10 RC Cars - Aluminum 7075

This 5-piece pinion gear set includes 32DP gears with 12, 13, 14, 15, and 16 teeth, all featuring a 3.175mm bore for 1/10 scale RC car motors. Made from aluminum 7075 with hard anodic oxidation, these gears are designed for use with both brushed and brushless motors. The set gives you flexibility to adjust gear ratio for speed or torque.

What do the numbers 32DP, 12T mean?

32DP (or 32P) refers to the pitch—the number of teeth per inch of gear diameter. This set uses 32DP, which is compatible with 0.8 metric module (0.8M) gears. The numbers 12T, 13T, 14T, 15T, and 16T indicate the number of teeth on each gear. A lower tooth count (like 12T) gives faster acceleration and more torque, while a higher count (like 16T) increases top speed. Mix and match to fine-tune your car's performance.

Aluminum 7075 with hard anodic oxidation

Each gear is machined from aluminum 7075, a high-strength alloy known for durability. The surface is treated with hard anodic oxidation and an anti-rust coating, which helps the gears resist wear and corrosion over time. The teeth are milled using a precision Tanwai machine, so they mesh smoothly with your spur gear.

How to choose the right pinion gear for your RC car

Your choice affects acceleration, top speed, and motor temperature. For quicker acceleration and more torque, use a smaller pinion (fewer teeth) together with a larger spur gear. For higher top speed, go with a larger pinion. If your motor runs hot, a smaller pinion can help lower temperatures and extend motor and ESC life. The five sizes in this set give you a good range to experiment with.

Installation notes from the manufacturer

• Loosen the motor slightly to slide the pinion onto the shaft. Make sure the grub screw locks onto the flat portion of the motor shaft.
• When tightening, leave a small gap between the pinion and spur gear—about the thickness of a piece of paper. This prevents binding.
• Ensure your spur gear has the same pitch (32DP) as these pinions, or the teeth will not mesh properly.
• This set fits motors with a 1/8 inch (3.175mm) shaft. It works with most 1/10 scale RC cars that use 32P spur gears.

Package contents and dimensions

Frequently asked questions

Are these gears compatible with 0.8M pitch?

Yes, 32DP is compatible with 0.8M (metric modulus 0.8). The teeth will mesh properly with any 0.8M spur gear.

What is the shaft size for these pinions?

The bore is 3.175mm (1/8 inch), which is standard for most 540-size brushed and brushless motors used in 1/10 RC cars.

Can I use these with a brushless motor?

Yes, they are designed for both brushed and brushless motors, as long as the shaft diameter and pitch match.

How do I know which tooth count to use?

Start with the same number of teeth as your original pinion, then adjust based on desired performance. Smaller teeth for acceleration, larger for speed.