--- title: Porsche 911 GT1 Straßenversion · HICONIUM description: "The 911 GT1 Straßenversion is a homologation car built by Porsche's racing department. Its engine sits ahead of the rear axle in a purpose-built chassis. Porsche's own publications count the road run differently." canonical_url: https://hiconium.dev/vehicles/porsche/911-gt1-stra-enversion image: https://hiconium.dev/og/vehicle/porsche/911-gt1-stra-enversion.png --- > HICONIUM · Index: https://hiconium.dev/llms.txt · Every page: append `.md` or send `Accept: text/markdown`. > Path: [Home](https://hiconium.dev/) › [Vehicles](https://hiconium.dev/models) › [Porsche](https://hiconium.dev/manufacturers/porsche) › 911 GT1 Straßenversion > On this page: [The price and the proof](#the-price-and-the-proof) · [Model readouts](#model-readouts) · [Documented sales](#documented-sales) · [Porsche designed the racer first and built the road quota around it.](#overview-heading) · [Technical specifications](#technical-specifications) · [Powertrain](#powertrain) · [Chassis](#chassis) · [Member instruments](#member-instruments) ![A silver Porsche 911 GT1 Straßenversion, front three-quarter view on a silver field with a wide light bar](https://hiconium.dev/images/cars/porsche-911-gt1-stra-enversion/hero-wide-2560.jpg) # 911 GT1 Straßenversion Road paperwork, racing architecture The 911 GT1 Straßenversion is a homologation car built by Porsche's racing department. Its engine sits ahead of the rear axle in a purpose-built chassis. Porsche's own publications count the road run differently. 1997 · 21 built · Weissach ## The price and the proof Indicative road-car band $15M–$25M · typical $20M · 1 documented road sales · 1 recorded sales on file. Modeled values are not observed sales. Nothing here is investment advice. Confidence: estimate. The public record is too thin for a high-confidence band. The verified ledger contains one GT1-98 Straßenversion sold in 2017; earlier cars and private transactions may not be comparable. Sub-1'000 km cars are currently negotiated at US$23–25M; cars with 5'000–10'000 km changed hands at US$15–18M over the last twelve months (partner-reported). A single public sale cannot describe this market. Generation, race-department records, road registration status and mechanical recommissioning determine whether two cars are genuine comparables. Valuation method and source rules: [HICONIUM standards](https://hiconium.dev/standards). Observed auction results across the wider market: [Market terminal](https://hiconium.dev/market). ### Model readouts Synthetic model · insufficient ledger. model v1 · seed porsche-911-gt1-stra-enversion. Compound annual growth is modeled price CAGR; S&P 500 is a price index without dividends. Forecast quantiles are not investment advice. | Window | This car* | S&P 500 | Gold | | --- | --- | --- | --- | | 1Y | +16.4% | +18.8% | +21.9% | | 5Y | +16.3% | +11.4% | +17.6% | | Series | Deepest drawdown | Window | | --- | --- | --- | | This car* | -6.9% | Feb 2020 → Apr 2020 · recovered Jul 2020 | | S&P 500 | -20.3% | Dec 2021 → Oct 2022 · recovered Dec 2023 | | Gold | -18.9% | Feb 2026 → Jul 2026 · not recovered | | Horizon | P10 | P50 | P90 | | --- | --- | --- | --- | | +6M | $18'606'037 | $20'399'891 | $22'366'695 | | +12M | $18'897'123 | $21'232'427 | $23'856'326 | | +24M | $19'575'367 | $23'000'813 | $27'025'670 | ### Documented sales 1 recorded. Every public sale on this file, newest first. Amounts keep the recorded currency. Source links appear only when the catalog stores a public auction-lot URL. | Date | Chassis / label | Class | House | Venue | Amount | Currency | Basis | Source | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 2017-03-10 | Gooding & Company · Gooding & Company Amelia Island · incl. buyer's premium | Road | Gooding & Company | Gooding & Company Amelia Island | $5'665'000 | USD | incl. buyer's premium | [https://www.goodingco.com/lot/1998-porsche-911-gt1-strassenversion/](https://www.goodingco.com/lot/1998-porsche-911-gt1-strassenversion/) | The band is an editorial estimate anchored to one documented public result and the current catalogue value. ## Porsche designed the racer first and built the road quota around it. The GT1 regulations required a road-going counterpart. Porsche met that requirement with a small series assembled by the racing department at Weissach rather than adapting a production 911 chassis into a racer. Road cars retained the twin-turbo engine, double-wishbone suspension, large brakes and six-speed transaxle, with road equipment and reduced output. Porsche quoted 544 PS, 310 km/h and 3.7 seconds to 100 km/h. The programme culminated in the GT1-98 race car's overall Le Mans victory in 1998. Later road cars mirror that evolution, which is why a catalogue entry must distinguish an early Straßenversion from a GT1-98. | Highlight | Detail | | --- | --- | | The engine moved forward | The flat-six sits ahead of the rear axle. Headlamps and roof language connect it to the 911; the load paths and weight distribution come from the racing brief. | | Built inside Motorsport | Weissach's racing department assembled the road cars. The production line, mechanical architecture and service demands are separate from a contemporary 993 or 996. | | One name, three bodies | The 1996 car carried 993-style lamps, the 1997 Evo adopted the coming 996 face, and the GT1-98 used a further-developed carbon body. Market evidence must name the version. | | Label | Value | | --- | --- | | Power | 544 PS | | 0 to 100 | 3.7 s | | Built | 21 | | Builder | Porsche Motorsport | | Launch price | DM 1.55 million | ## Technical specifications ### Powertrain | Label | Value | Note | | --- | --- | --- | | Engine | 3'164 cc water-cooled flat-six | type M96/83 in the GT1-98 road car | | Induction | Twin KKK turbochargers | | | Power | 400 kW / 544 PS at 7'000 rpm | factory figure | | Gearbox | 6-speed manual transaxle | limited-slip differential | | Layout | Mid-engine, rear-wheel drive | | ### Chassis | Label | Value | Note | | --- | --- | --- | | Structure | Steel chassis with carbon-fibre reinforced body | built by the racing department | | Suspension | Double wishbones | adjustable coil springs and dampers | | Brakes | 380 mm ventilated discs | four-wheel Brembo system | | Body generations | 993 nose, then 996-style nose | later GT1-98 cars have a distinct shell | | Production count | 21 road cars | Porsche sources also state 23 or at least 20, depending on prototypes and GT1-98 treatment | ## Member instruments A HICON Bid is a confidential expression of buying interest on this file. It is not a binding purchase, and HICONIUM holds no funds. [Sign in](https://hiconium.dev/sign-in) to place one. Garage files for an owned chassis are member records and are not listed here. [How membership works](https://hiconium.dev/membership).