Beefy Hardened Steel RC Pinion Gear Set 18T 19T 20T 21T 22T For 3.175 mm Shaft, 48 Pitch, 9mm Height, With Screws And Hex Wrench, Precision Tooth Profiles For Smooth, Durable Power And Quick Responsive Motor Action

RC Pinion Gear Set 3.175mm Shaft, 48P Hardened Steel 5 Pack
✔️ 5 pcs: 18T-22T pinions, 3.175 bore (1/8"), includes screws & hex

These hardened steel pinion gears are precision-cut to mesh with 48P spur gears and fit on 3.175 mm shafts. They’re ideal for RC cars, trucks, and drones requiring precise gear ratios and smooth, reliable power transfer.

✅ 48P tooth pitch; 18T-22T options; 9 mm height; bore 3.175 mm (1/8")
✅ Hardened steel for durability under high loads
✅ Includes 5 gears, 5 screws, and 1 hex wrench
✅ Each gear has a set screw for secure mounting
✅ Requires compatible spur gear with matching 48P

💡 What is a pinion gear used for in RC systems?

A handy explanation covers its role in power transfer and speed control for common hobby setups.

• Transfers torque from motor to spur gear to drive wheels or props
• Sets the final gear ratio to tune acceleration and top speed
• Made from hardened steel for long life under high loads
• Ensure proper meshing by matching 48P with the spur gear