ARRMA Main Diff 39T Spiral RC Differential Gear - ARA310911

The ARRMA ARA310911 is a 39-tooth spiral-cut main differential gear designed as a direct-fit spare part for specific ARRMA 1/8 scale models. When the main diff gear wears or strips, this OEM-spec replacement restores your drivetrain to full working order without any modification. The spiral tooth profile is a defining feature of these ARRMA differentials, and using the correct 39T spiral gear ensures proper mesh and smooth power transfer through the diff.

Key Features

• 39-tooth spiral-cut gear matches the OEM specification for the supported ARRMA models
• Direct replacement for a worn or damaged main differential gear — no modification required
• Spiral tooth geometry provides smooth, consistent engagement through the differential
• Compatible with ARA5808V2T1 and ARA5810V2T1 platforms, so always confirm your model before ordering
• Sold as a single gear — fits directly into the existing diff assembly

Compatible With

• ARRMA Kraton 6S BLX V2 (ARA5808V2T1)
• ARRMA Outcast 6S BLX V2 (ARA5810V2T1)

What's Included

• 1x ARRMA 39T spiral main differential gear (ARA310911)