Serpent 804391 Rear Diff for Natrix 748 V2 Track Use  [SER804391]

Track-focused rear differential for Serpent Natrix 748 V2

The Serpent 804391 rear differential set is a practical upgrade aimed at improving the Natrix 748 V2 drivetrain. The revised case captures extra oil to keep the diff characteristics more consistent during long runs, and it incorporates a small bleed hole to let surplus oil escape during assembly, which can later be closed with a grub screw for neat maintenance.

Construction, axles and pulley advice

Gears in this assembly have a deeper profile for a better fit, and the kit uses very light hardened spring steel axles to resist wear. The diff cases are fitted with a moulded spring steel bushing for extra support. To use this V2 differential you must fit the updated larger pulleys and a compatible side belt; the larger diameters lessen belt flex and can improve acceleration. Pulleys are supplied in both standard and white low friction options to suit different tuning choices.

Compatibility and serviceability

The diff gears are also suitable for 748 V1 gear differentials, making the 804391 an effective replacement part when refurbishing older units or updating existing cars.