Keep your drivetrain running smoothly with the ARRMA Diff Outdrive Insert Set (part number ARA311028). These precision-molded composite inserts are designed to sit inside the differential outdrives, reducing wear and improving fitment between the diff gears and drive cups. Ideal for maintenance or repair, these inserts help maintain drivetrain efficiency and longevity—especially under high-power brushless systems in off-road conditions. Key Features: Part Number: ARA311028 Includes: (2) Diff Outdrive Inserts Material: High-strength composite plastic Use: Fits inside diff outdrives to reduce wear and slop Compatible With: Select ARRMA 1/8 and 1/10 scale vehicles (verify fitment per model) Function: Maintains tight mesh and improves durability of the differential system Installation: Direct fit with no modifications required Restore precision to your drivetrain with the ARRMA ARA311028 Diff Outdrive Inserts—a small but essential part for smooth, consistent power delivery.
![ARRMA Differential Outdrive Insert – Composite [ARA311028]](https://cdn.shopify.com/s/files/1/0760/2349/files/ARA311028_A0_MIB027HR.jpg?v=1756669347&width=480)
