This aluminium diff bearing housing belt is an RC-scale replacement part intended for the Auper D6 chassis, supplied in red anodised finish. It serves as the mounting interface for the differential bearings and the belt run, offering a firmer seating surface compared with basic moulded housings.
Compatibility is limited to installations that use the Auper D6 diff layout as specified by the kit, check existing bearing types and bolt points before fitting. Installation typically reuses the kit's fasteners and bearings, so no extra specialised parts are required, but verify clearances and thread engagement during assembly to avoid misalignment.
In tuning terms this part provides a stable bearing reference that helps keep belt alignment consistent when adjusting preload or shim stack. It is a pragmatic chassis-level hop-up for hobbyists focusing on mechanical stability and repeatable differential setup rather than a performance shortcut.