Become a Member: Get Ad-Free Access to All Our Content

1997 Porsche 911 GT1 Straßenversion

Created to homologate Porsche’s 911 GT1 contender, the street version, sometimes called ‘Strassenversion’, is one of the most fierce and rare 911s. Apart from the sparse interior, little differentiates the GT1 from the full-on, race-ready counterpart. The homologation regulations demanded that the car complied to both the rules of the road and track. This included comprehensive European regulations which created a golden age of GT1 racing.

Apparent from the front and rear lights, the GT1 shares many components with its series production counterparts, but puts them together in a more competitive way. Gone is the rear engine layout which isn’t suitable for prototype GT racing, the GT1’s turbocharged flat-six engine sits in front of the rear axle and is supported by chassis tubes instead of the typical 911 rear sub frame. Sitting behind the engine is a longitudinal six-speed transmission which the rear suspension attaches directly onto.

The GT1 was based on the 993 body shell, but with modified exterior panels and a substantial roll-cage that also supported the engine, gearbox and suspension. This helped Porsche avoid necessary crash testing and reinforced ties to the production cars.

But in almost every way, the GT1 was purpose-built race car. It had a carbon fiber body, full width wing, a tiny cockpit and a maximum power of 600bhp was developed at 7,200rpm.

Compared to the GT1s which raced Lemans, the road-going version had only slight modifications. These changes include a higher ride height, softer suspension, road-going gear ratios and steel brakes which replace the race car’s carbon discs. The engine was only slightly detuned from the race version’s and a complete interior included sport seats and a full dashboard from the 993 line.

While the first version of the GT1 debuted at the 1996 season, Porsche only produced a single homologation car. The following year, the ‘Evo’ version was released with new kidney-shaped headlights and improved aerodynamics. This was good enough for Porsche to build twenty examples for select customers. These lucky few owned one of the most radical and unforgiving road-going supercars of their time.

Specs & Performance

type Series Production Car
price $ $ 1.5 million DM
engine All Aluminum, Water Cooled, Twin KKK Turbo Flat-6
position Mid Longitudinal
aspiration Twin KKk Turbochargers w/Intercooler
valvetrain DOHC 4 Valves per Cyl
fuel feed Multipoint Sequential Fuel Injection
displacement 3164 cc / 193.1 in³
bore 95 mm / 3.74 in
stroke 74.4 mm / 2.93 in
compression 9.5:1
power 405.7 kw / 544.0 bhp @ 7000 rpm
specific output 171.93 bhp per litre
bhp/weight 453.33 bhp per tonne
torque 600 nm / 442.5 ft lbs @ 4250 rpm
redline 7600
body / frame Carbon Fibre Body over 993 Carrera Front Chassis With Rear Tube Frame
driven wheels RWD w/LSD
front tires 295/35 ZR 18 Pirelli P Zero
rear tires 335/30 ZR 18 Pirelli P Zero
front brakes Internally Vented & Cross Drilled Discs w/8-Piston Calipers, ABS
rear brakes Internally Vented & Cross Drilled Discs w/4-Piston Calipers, ABS
front wheels F 45.7 x 27.9 cm / 18 x 11 in
rear wheels R 45.7 x 33.0 cm / 18 x 13 in
steering Rack & Pinion w/Power Assist
f suspension Double Wishbones w/Adjustable Shock Absorbers, Anti-Roll Bar
r suspension Double Wishbones w/Pushrod Acuated Inboard Spring and Damper Units, Anti-Roll Bar
curb weight 1200 kg / 2646 lbs
length 4710 mm / 185.4 in
width 1950 mm / 76.8 in
height 1170 mm / 46.1 in
transmission Longitudnal 6-Speed Manual
gear ratios 3.82:1, 2.15:1, 1.56:1, 1.21:1, 0.97:1, 0.75:1
final drive 3.444:1
top speed ~279.97 kph / 174 mph
0 – 60 mph ~3.65 seconds
0 – 100 mph ~6.3 seconds
0 – 1/4 mile ~11.0 seconds

Auction Sales History

1998 Porsche 911 GT1 Straßenversion WP0ZZZ99ZWS396005 – sold for $1,175,000 One of approximately 25 examples produced. The only example known to be imported into the United States. Homologated roadgoing street version of the 1997 911 GT1 Evolution Race Car. A pristine, low mileage example. Auction Source: Monterey 2012 by RM Auctions