Porsche 911 Modified

Porsche 911 Modified

Coupé, 2013

Highlights

  • A truly one-of-a-kind piece
  • Road approval
  • Optimized for the racetrack

With the 9ff GT9 CS, the Dortmund-based supercar specialist 9ff created far more than just a modified Porsche: The GT9 CS is a unique design, born from the ambition to develop a street-legal race car with extreme performance and uncompromising driving dynamics. Based on the Porsche 997, the result is a vehicle featuring a mid-engine layout, a tubular frame, a carbon-fiber body, and racing technology—a truly exceptional model even among exotic supercars.

The vehicle offered here is from a first owner and has been treated with the utmost care by its owner. The only reason for parting with it is quite simple: the vehicle is driven far too infrequently.

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The vehicle in detail

This GT9 CS makes a particularly impressive statement in the legendary Gulf livery with a blue base color and orange accents—a design that perfectly complements the vehicle’s uncompromising engineering and racing DNA.

While the original GT9 CS was already one of the most spectacular vehicles of its time with around 750 PS, this particular model delivers an impressive 1,000 PS. With a curb weight of around 1,240 kilograms, this results in a power-to-weight ratio that even modern hypercars must respect.

The technical specifications read like a race car driver’s wish list: carbon-fiber body, integrated roll cage, mid-engine configuration, lightweight construction down to the last detail, and aerodynamics consistently designed for high speeds and maximum stability. Hardly any other vehicle combines such radical technology with regular street legality.

All in all, this presents an extremely rare opportunity to acquire one of the most spectacular vehicles ever developed in Germany. A GT9 CS is already a rarity in its own right—but a first-hand example with 1,000 PS and in this iconic color combination is unlikely to come along a second time, even for long-time collectors and Porsche enthusiasts.

VEHICLE

  • 2-Seater Supercar
  • Mid-engine design
  • Load-bearing 9ff tubular frame construction; integrated roll cage with door crossbars for high safety
  • Box-type front end for “crash safety”
  • One-piece lightweight carbon-fiber body
  • Wheel arch extensions front and rear
  • Carbon-fiber front hood
  • Carbon-fiber doors with side-impact protection
  • Windshield made of laminated safety glass
  • Side and rear windows made of Makrolon Plexiglas + 9FF
  • Recaro lightweight bucket seats
  • 9FF carbon fiber air intakes and outlets
  • Visible carbon fiber rear wing
  • 4-piece smooth underbody with integrated front lip and rear diffuser
  • Curb weight: 1,240 kg
  • Height: 1,100 mm

ENGINE

  • 9FF 3.6-liter twin-turbo boxer engine with 24 valves and DOHC
  • 9FF long-stroke steel connecting rod
  • 9FF crankshaft for high RPM
  • Engine block pinned and reinforced
  • Reinforced connecting rod bearings
  • Cylinder heads with 9FF CNC machining of the ports, seats, and valves
  • 4x “sharp” 9FF camshafts for “VarioCamPlus”
  • 24x 9FF valve springs reinforced with washers
  • 6x Bosch 650 g/min single-injection nozzles
  • Modified fuel pressure regulator
  • 9FF Teflon fuel line set
  • 2x Bosch Motorsport fuel pumps, ECU-controlled
  • 2x KKK K26-30.80 turbochargers with BILLET compressor wheels
  • Modified turbocharger mounting for different position
  • 9FF Teflon hose kit for turbocharger oil supply
  • Modified turbocharger oil sump with hose kit
  • Internal wastegates
  • 9FF stainless steel exhaust manifold set, 48 mm
  • 9FF “Loud/Quiet” Flap Exhaust System, Polished Stainless Steel
  • 9FF Tailpipes, 80 / 80mm Diameter, Polished Stainless Steel
  • 2x 200-cell metal motorsport catalytic converters
  • 74mm Throttle Valve
  • 9FF Aluminum Intercooler, 100 mm
  • 9FF air filter boxes
  • Upgraded HFM system for air mass measurement
  • Bosch 3 bar MAP sensor
  • 9FF Large-Diameter Intake Pipes
  • 9FF Stainless Steel Y-Pipe, 60mm, Polished
  • NGK Motorsport spark plugs with special 9FF heat range
  • Tilton 4-disc clutch, 1900 Nm
  • Castrol RS 10W-60 engine oil
  • BMC air filter inserts
  • SYVECS engine control unit
  • With launch control, adjustable traction control, brake boost, and map switch
  • 9FF ECU programming with 6 levels, selectable via switch

SUSPENSION

  • Height-adjustable 9FF / JRZ suspension
  • Aluminum shock absorbers with reservoir
  • Shock absorbers with 3-way adjustability
  • 60mm dual racing springs
  • Rigid aluminum strut mounts
  • Reinforced front and rear control arms
  • Front axle “McPherson” system
  • Rear axle with push-rod actuation
  • All suspension struts with metal ball joints
  • Front and rear with 4-way adjustable stabilizer bars
  • Electrohydraulic power steering
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Specifications

Year of construction: 2013
Initial registration date: June 2016
Model: 911 Modified
Body: Coupé
Series: 911 Backdate/Modified
Mileage: 5,350 km
Power: 1000 HP
Steering: left
Transmission: Manual
Drive: Four-wheel drive
Fuel: Gasoline
Configuration: Air conditioning
Interior material: Two-tone Fabric
Interior color: Black
Secondary interior color: Blue
Exterior color: Blue
Vehicle inspection: new
Condition: Accident-free
New / used: Used car
Ready to drive: yes
Number of vehicle owners: 1
Car location: DEGermany
Elferspot ID: 6089864

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Porsche 911 Modified

Porsche 911 Modified

Price: on application
DE2013

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