Tamiya FF-03 Touring Ball Differential - FF03-01 by 3Racing  [FF03-01]

Sturdy aluminium ball diff for FF-03

Designed as an aftermarket replacement for the Tamiya FF-03 plastic differential, this machined aluminium unit improves robustness and provides a clearer tuning range through preload and ball choices. It suits hobbyists who prefer to sort handling mechanically rather than rely on electronics.

Fit and checks: the differential follows the FF-03 gearbox footprint and standard ball diff layout, matching FF-03 mounting points. Do not assume compatibility with other chassis without verifying carrier specs and clearances.

Tuning notes: install into the FF-03 differential carrier and set preload to taste, testing different ball sizes to change cornering grip and throttle response; less preload allows freer rotation for cornering while more preload increases drive transfer. Use diff grease recommended for ball differentials and inspect race surfaces periodically.

Maintenance tips: clean the aluminium parts with cleaners safe for machined finishes and inspect balls, races, and drive cups for wear. Replace components that show fatigue to keep predictable performance. Intended for hobby chassis maintenance and setup work only.

Add this aluminium ball differential to an FF-03 touring car to strengthen the drivetrain and enable straightforward mechanical setup changes for consistent lap-to-lap feel.