The ARRMA 21T 0.5MOD CNC Pinion Gear delivers precise power transfer and durability for high-performance 1/18–1/14 scale applications. Machined from high-quality steel with a 2.3 mm bore, it ensures smooth operation and reliable mesh with your spur gear setup.
✅ CNC-Machined Steel – Provides strength, precision, and long life
✅ 2.3 mm Bore – Fits standard 2.3 mm motor shafts
✅ 0.5 Module Pitch – Optimized for micro and mini ARRMA drivetrains
✅ Set Screw Included – Easy and secure installation
Compatibility:
Available for many small-scale ARRMA vehicles and other 0.5 MOD applications (check your manual for exact fit).
Includes:
-
(1) 21T 0.5 MOD CNC Pinion Gear
-
(1) Set Screw
⚡ Upgrade your drivetrain with the precision and reliability of ARRMA CNC-machined gears.
