Auper D6 Gear Bulkhead Upgrade SAK-D6825/BU for drivetrain stability by 3Racing  [SAK-D6825/BU]

Function and fit for Auper D6 bulkhead

This gear drive bulkhead is supplied as a replacement option compatible with the Auper D6 platform. It secures the gear drive area of the gearbox, maintaining correct alignment of spur, pinion, and bearing seats during operation and setup changes.

Its main purpose is to maintain fixed positions for axles and bearings so backlash and mesh remain predictable. When installing a new bulkhead, move the original bearings and any shims over and check clearances before final torquing to avoid binding under load.

Installation steps: remove existing gearbox fasteners in order, transfer bearings and spacers to the new bulkhead, then fasten while verifying smooth gear rotation. Tighten fasteners in stages and re-evaluate drivetrain spin.

A practical service part for restoring gearbox geometry on the Auper D6 chassis, helping hobbyists tune geartrain clearance and maintain reliable drivetrain performance.