ARRMA AR310770 / ARAC7784 Pinion Gear 17T 48DP — Mega 4x4

The ARRMA AR310770 Pinion Gear 17T 48DP (also known by legacy part number ARAC7784) is a genuine OEM replacement 17-tooth 48DP pinion gear for the ARRMA Mega 4x4. The pinion gear meshes with the spur gear to transfer motor power into the drivetrain. This 17T gear is the stock pinion for the Mega 4x4 platform, providing the factory-tuned balance of speed and torque.

Key Features

• Genuine ARRMA OEM replacement pinion gear
• 17-tooth, 48DP pitch
• Stock pinion for ARRMA Mega 4x4 platform
• Direct-fit replacement — no modification required
• Restores factory speed and torque balance

Compatibility

• ARRMA Mega 4x4

Specifications