Aluminum Differential Carrier Case Bottom Cover: Arrma BLX 3S, 4S (HRAATF11B01)

Aluminum Differential Bottom Cover for the ARRMA BLX 3S/4S differential carrier. This CNC-machined 6061 aluminum plate is black anodized for durability and corrosion resistance, and it replaces the factory bottom plate to protect the differential from debris and add rigidity. It fits both the front and rear differentials, making it a straightforward upgrade for drivetrain protection on ARRMA BLX 3S/4S models.

Includes one bottom cover plate and is designed to work with the stock planet-gear outputs. For installation, apply medium-strength thread lock to the screws and avoid overtightening, and use silicone differential lubricant for smooth, long-lasting performance. This bottom cover replaces the stock ARRMA carrier bottom plate in BLX 3S/4S configurations.