Top quality from our own production
We machine the complete final drive — crown wheel and pinion — for the 915 gearbox of the 911 (1972–1986) on our own gear-cutting machines in Germany. The teeth are ground on the drive and coast sides to a tolerance in the region of 0.0025 mm, not milled and lapped. Every final drive is numbered and delivered with a measurement report; the setting dimension for optimum running is etched into the face of the pinion.
The best-known final drive in the programme is the 8:35 (i = 4.375) — the short racing ratio from the 911 RS and RSR, Porsche reference number 915 302 911 02, including the matching high-strength bolt set for the crown wheel.
In stock, ships immediately
The final drive for the 915 gearbox is in stock — as are the final drives for the 356, 901, 904, 906, 908, 908/03, 916 and 917. No production lead time: inquire, order, delivered.
Set-up and installation from one source
A precise final drive only performs with correct backlash and contact pattern. On request we install it and set it up to factory specification — ideally combined with a gearbox rebuild or a limited-slip differential in the same job. More about the gearbox itself: 915 gearbox.