Porsche
911 Turbo S2 (964, US market)

Why it matters

The 911 Turbo S2 was a homologation special for the 964 era: to race in the IMSA sports-car series, Porsche had to build at least 200 road-going cars, 20 of which had to share most of the main components of the race car. The S2 was built for that purpose and sold only in the United States and Canada.

How rare is it?

Six separate kinds of rarity – never combined into one number.

Each kind of rarity is rated separately and never combined.

Production

Every figure says what it counts.

Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.

History

The 20 homologation cars left the Porsche factory as standard 964 Turbos and went straight to a California-based tuner, which carried out the "S2" engine upgrades. The Stuttcars 964 hub files the car under 1992 and calls it a forgotten part of the 964 story.

Technical specifications

Engine

Transmission & drivetrain

Chassis, body & dimensions

Performance

“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.

Identification guide

How to tell an original from a replica or later conversion.

Genuine cars are 964 Turbos delivered new to the US or Canada market and upgraded to S2 specification by the California tuner after leaving the factory, so the factory build record shows an ordinary 964 Turbo and the S2 identity rests on the tuner's upgrade documentation. Only 20 cars share the main race-car components.

Sources

Each number links to the exact facts it supports.

1. 1
   Porsche 911 964 (3rd generation) research hub Level B Stuttcars

   • The 20 homologation specials left the factory as stock 964 Turbos

   Accessed 2026-11-12
2. 2
   Stuttcars – Porsche 911 Turbo S2 (964) (1992) Level C

   • 20 1992 Turbo S2 road cars built by Andial for Porsche North America

   Accessed 2026-11-12