Porsche 997.1 GT3 Race Car

[ Race Car / Touring / Sports ]

This is not a Cup car, but it has been converted to a fully dedicated race car with a majority of 992 upgrades.

Technical Specifications


  • Water-cooled six-cylinder Mezger engine • FVD 3.6 to 4.1 L Conversion 3.6 to 4.1 L Upgrade • Displacement 4,096cm³; stroke 76.4mm; bore 106mm • Max. Rear Wheel HP: 440 hp at 8,450 rpm ProHub Dyno (see attached dyno sheet) • Max. Rear Wheel torque: 298 FtLb at 7,420 rpm • Max. rpm: 8,500 rpm • Dundon Motorsports Resonance Intake with 100 mm Throttle Body • Dundon Motorsports Long Tube Header Exhaust System • Dundon Motorsports Center Muffler with side muffle deletes • Engine control unit SYVECS S7 PNP • Sachs Lightweight flywheel


  • Porsche 991 Cup six-speed sequential dog-type gearbox • Gear ratios: Final Drive: 8/32 1st gear 12 to 38 3.17 2nd gear 15 to 32 2.13 3rd gear 18 to 31 1.72 4th gear 20 to 28 1.40 5th gear 23 to 27 1.17 6th gear 24 to 24 1.00 • Mechanical limited slip differential • Three-plate Sachs racing clutch • MME Motorsport Paddle shift system with pneumatic pump actuator

Body – Exterior

  • Carbon fiber hood with quick release latches • Carbon fiber roof • Lexan windows all around • Carbon fiber Gt3-R body kit including front bumper, front fenders, rear bumper cover and rear fender flares • Carbon fiber custom designed rear diffuser with quick release pins • New 3 color exterior wrap covering entire body plus additional clear bra protection for front and rear flare fenders sections

Modified 911 Cockpit:

  • Lightweight carbon fiber custom dashboard and floor panels • GMG Racing World Challenge roll-cage • Cool shirt equipped with panel on/off switch, Interior face fan and air duct for driver ventilation. • Rear view cameras and monitors for back view, left side and right side respectively • AIM Sports MXP 6” Full Color Digital Dash Display with Remote buttons and Expansion harness and several channels still open for custom sensors • AIM SmartyCam3 connected to dash with the latest track and firmware updates • Multifunctional aluminum motorsport steering wheel with quick release coupling, shift paddles and push buttons. • Carbon fiber interior trim panels • Adjustable steering column with steering angle sensor • Safety nets (centre and driver’s side) in accordance with latest FIA safety regulations • Optimised cockpit ventilation featuring airflow directed at driver • Antigravity Lightweight Lithium battery (located in OEM Front trunk area) • FIA approved Fire extinguisher system with nozzles in cockpit, front trunk and engine bay


Front axle

  • Porsche McPherson strut front suspension, adjustable ride-height, RSS control arms, camber and toe links. • Electric power steering 997 Cup pump relocated to frunk areal. • New Ohlins TTX based Porsche 997 GT3 RS Double Adjustable Shocks, with Tarrett mounting plates • Eibach Main Springs and Helpers

Rear axle

  • RSS Multi-link rear suspension, ride-height adjustment, camber and toe • New Ohlins TTX based Porsche 997GT3 RS Double Adjustable Shocks, with Tarrett mounting plates • Eibach Main Springs and Helpers • GT2 Upgraded sway bar Rims/Tires Front axle • Single-piece 997 Cup centre-lock Forgeline GTD alloy wheels 18 x 10.5 • Michelin Porsche Cup N2 tires size: 27/65-18 Rear axle • Single-piece 997 Cup centre-lock Forgeline GTD alloy wheels 18 x 13 • Michelin Porsche Cup N2 tires size: 30/68-18

Brake system

Bosch Motorsorts M5 ABS system including two independent brake circuits incorporating front and rear axle brake pressure sensors, driver-adjustable brake force distribution via brake balance system.

  • Enhanced Race brake pads
  • Optimised brake ducts

Front axle

  • Brembo GTS Six piston aluminum race caliper
  • Ventilated 380mm x 32mm steel brake discs mounted on aluminum disc bells

Rear axle

  • Brembo GTS Four-piston aluminium monobloc racing brake calipers
  • Ventilated 380mm x 28mm steel brake discs mounted on aluminium disc bells


  • Total weight: approx. 2,775 lbs without driver

Spares Package

This package is included in the car price and consists of the following items:

  • 2 additional sets of wheels
  • 1 set of Continental Rain Race Tires
  • 1 set of front rotors and hardware
  • 1 set of front brake pads
  • 1 set of rear brake pads
  • SYVECS ECU diagnostics/interface cable
  • Bosch ABS Diagnostics MSA II Cable
  • Wheel nut socket
  • Set of wheel nuts
  • Set of stub axles
  • 2 headlight spare lenses

When inquiring about this vehicle, please reference “GT3 MGR.”