ARRMA 20T 0.5 MOD CNC 2.3mm Bore RC Pinion Gear - ARAAR311206

The ARRMA ARA311206 is a 20-tooth, 0.5 MOD pinion gear with a 2.3mm bore, CNC machined for use in compatible ARRMA electric RC models. Pinion gears are a common wear item in RC drivetrains, and having the correct tooth count, module pitch, and bore size is essential for reliable power transfer from the motor to the spur gear. The ARA311206 spec — 20T, 0.5 MOD, 2.3mm bore — is suited to smaller ARRMA models running motors with a 2.3mm shaft diameter. CNC machining ensures consistent gear geometry and a precise bore fit, which matters for reducing drivetrain slop and keeping mesh alignment stable under load.

Key Features

• 20-tooth, 0.5 MOD specification for correct mesh with compatible 0.5 MOD spur gears
• CNC machined construction delivers consistent gear geometry and accurate 2.3mm bore sizing
• 2.3mm bore diameter suits motors with a 2.3mm output shaft — verify your motor shaft before ordering
• Direct replacement pinion gear for compatible ARRMA electric models running this gear spec
• Sold as a single pinion gear; check your current gear ratio if substituting a different tooth count

Compatible With

• ARRMA models specifying a 20T 0.5 MOD pinion with 2.3mm bore
• Verify compatibility against your specific ARRMA model's parts list using style code ARA311206

What's Included

• 1x ARRMA ARA311206 20T 0.5 MOD CNC pinion gear (2.3mm bore)