ARRMA 20T 0.8 Mod 4x4 BLX 3S RC Pinion Gear - ARAC7878

The ARRMA ARAC7878 is a 20-tooth, 0.8 mod pinion gear designed as a direct-fit drivetrain component for ARRMA 4x4 BLX 3S models. This RC pinion gear sits between the motor and the spur gear, forming the first stage of power transfer in the drivetrain. Selecting the correct tooth count and module is critical for proper mesh and reliable performance, and this gear is specced to match the factory drivetrain setup on compatible ARRMA brushless 3S vehicles.

Key Features

• 20-tooth pinion gear with 0.8 module pitch, matched to ARRMA 4x4 BLX 3S drivetrain specifications
• Designed to mesh correctly with the spur gear on compatible ARRMA brushless 3S models
• 0.8 mod pitch is not interchangeable with 32-pitch or 48-pitch gears — confirm your vehicle's spec before ordering
• Direct factory replacement part, restoring the stock gear ratio when a pinion has worn or been damaged

Compatible With

• ARRMA 4x4 BLX 3S models

What's Included

• 1 x ARRMA 20T 0.8 Mod Pinion Gear (ARAC7878)