1990 911 Carrera 4 Leichtbau

The 964 Carrera 4 Leichtbau is the rarest and most extreme of all the 964 RS variants, with only 22 examples produced. Built by Porsche Motorsport using leftover components from the 953 Paris-Dakar project, the Leichtbau was effectively a rally-inspired prototype combining the lightweight RS shell with the all-wheel-drive system derived from the 959. Engineers squeezed 300 horsepower from the 3.6-liter flat-six by removing catalytic converters and mufflers, pairing it with a competition clutch, single-mass flywheel, and close-ratio gearbox. With a seam-welded tub, fiberglass and aluminum body panels, Plexiglas windows, and nearly all creature comforts deleted, the car tipped the scales at just 1,098 kg. Track-focused and visually distinct thanks in part to its external oil filler and fixed window sliders, the 964 C4 Leichtbau remains one of Porsche’s most purpose-built, secretive homologation specials.

This 1990 911 Carrera 4 Leichtbau shows just 530 km (~329 mi) and remains in remarkably original condition. Finished in Grand Prix White, it retains its matching-numbers engine and is accompanied by lots of documentation and photographs in the gallery. A true artifact of Porsche Motorsport’s rally-inspired engineering, this example had little to nitpick—unless you count the ongoing wheel-material debate in the comments.

We don’t see many Carrera 4 Leichtbaus cross the block, but this one has become a familiar face. It failed to sell earlier this year at a final bid of $800,000, and before that, the last recorded sale I have was a 46-mile example that brought $885,000* in June of 2023. This time around, it stalled out again, now at a final bid of $470,000. Hopefully third time’s the charm.

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