PWC Competition Classes

FIA GT3 Homologated sports cars or RACB G3 homologated vehicles. Luxury brands sports or GT vehicles. 2 door coupe or sedan, rear-wheel drive with turbocharged or normally-aspirated engines. WHP ratings range from 450-525 whp.

Bodywork Modifications

Hood, trunk/decklid and doors may be aftermarket composite components.Vented hoods are approved on a car-by-car basis. Additional aftermarketcomposite components may be approved if deemed necessary to make acompetitive package. Front splitter may protrude 2″ from approvedfront fascia, but may be no wider than the tires at their widestpoint. Splitter may deviate vertically on the sides and bottom. Eachcar is permitted to run an approved rear wing.

Chassis Modifications

Interior may be removed except dashboard. Miscellaneous unused mounting brackets may be removed. Chassis seams may be welded. Doors must be capable of being opened from inside and outside. Driver’s seat may be moved rearward as long as the seat back at the driver’s shoulders does not pass the vertical plane of the rear seat shelf. Windshield wipers may be removed, but an operational motor must remain in place. Windows may be replaced with Lexan.

Safety Modifications

A full rollcage must be used. The rollcages typically have eight main attachment points within the cockpit/trunk. The A-pillar, B-pillar and roof may be stitch-welded to the rollcage. Fuel cells are required, unless stock fuel tank is located between frame rails and the axles.

The driver’s safety equipment includes a racing seat, six- or seven-point harness, full-face helmet, head/neck restraint, window net, right-side head restraint net, side-impact protection, driver leg support system, multi-layer suit, fire-resistant shoes, gloves and underwear and a three-zone fire system.

Engine Modifications

Engines may be blueprinted and balanced. Full-prep engines may replace reciprocating internals. Custom intake manifolds may be allowed if deemed necessary. Engine management systems are free. Ignition system component may be replaced. Must maintain an operational on-board starter.

Dry sump systems are permitted. Forced induction is permitted and may be added to a car if deemed necessary to be a competitive package. Noise limit is 120 dBA. Traction control, and other commonly available electronic driver aids, are permitted.

Drivetrain Modifications

Transmission and differential coolers may be added. Limited-slip differentials are permitted.

Clutch and flywheel design are free, but start ring gear diameter must be stock. Driveshafts and halfshafts may be modified or replaced, but must be same material and type as OEM. Two sets of gear ratios are permitted. Sequential transmissions are permitted on most vehicles.

Suspension Modifications

The OEM-type of suspension must be retained (i.e. McPherson strut, double A-arm, etc.) Alternate control arms may be submitted for approval. Shocks and springs are free, but must remain in stock location. Anti-sway bars are free. Steering geometry may be modified to correct bump steer.

The suspension pick-up-points below the top of the tire may be relocated 25mm, and the suspension pick-up points above the tire may be relocated 75mm.

Brake System Modifications

OEM brake systems may be replaced with racing components. The maximum rotor size in GT is 380 mm x 30 mm minimum thickness front and 25 mm minimum thickness rear. The OEM caliper, any 4-piston caliper, or approved 6-piston calipers may be used. Water may be injected into the brake ducts. ABS is permitted. Carbon and Ceramic rotors are not permitted unless stock OEM components are being used.

Wheels

Wheel offset is free, provided the approved bodywork covers the portion of the tire that contacts the track.

The wheel diameter used in the GT class is 18″. The maximum wheel width range from 9.5″-13″ based on the tire size(s) permitted on each car. Magnesium wheels are permitted.

Tires

Tires are Pirelli P Zero Racing Slicks, in width ranging from 245mm to 315mm.

Not a vehicle class, the GT Sportsman GTA class is a driver classification to differentiate professional drivers from sportsman drivers in GT Class equipment. GTA drivers will compete for the Sportsman Cup. The qualifications for a GTA driver may include but not be limited to the FIA Bronze designations.

Vehicles currently allowed in this category: Porsche 991 GT3 Cup, Lamborghini Super Trofeo, and Ferrari 458 Challenge. Spec cup vehicle raced globally. This races as a separate class with the GT3 cars in PWC. Power is limited to 400 whp.

Bodywork Modifications

Lightweight bodywork with smart aluminum-steel composite construction. Front bonnet with two air inlets for cockpit ventilation and quick fasteners. Removable roof section. Modified and widened 911 GT3 fenders. Modified rear wheel arches. Modified and widened 911 GT3 front end with spoiler lip. Modified 911 GT3 rear-end with integrated rain light, in compliance with FIA Homologation Regulations.

Lighweight exterior: CRP doors with sport-design rear-view mirrors, CRP rear engine lid with quick fasteners, CRP adjustable rear wing, PC windows and rear side windows with ventilation openings, PC rear window.

Underbody tray with air routing for brake and driveshaft cooling in the rear. 100-liter fuel cell (FT3 safety fuel cell)

Chassis Modifications

Modified 911 cockpit: Magnesium sub-frame in light weight design. Ergonomic driver-oriented center console. Switch mask with fluorescent lettering. Steering wheel with quick release coupling, control panel and shift paddles.

Race bucket seat with longitudinal adjustment; homologated to latest FIA requirements, individual padding system. Six-point seat belt

Safety Modifications

Welded-in roll cage, in compliance with FIA Homologation Regulations for safety cages.

Rescue bar analogue DTM system.

Engine Modifications

Sealed aluminum six-cylinder rear-mounted boxer engine. 3,800cc 76.4mm x 102.7mm

Max Power: 460hp @ 7,500rpm. Max 8,500rpm

Bosch MS 4.6 Engine Management System

Race exhaust system with regulated race catalytic converter

Rear silencer with centered exhaust pipe

Drivetrain Modifications

Single-mass flywheel and triple-disc sintered metal race clutch

Porsche six-speed sequential dog-type gearbox with limited slip differential

Pneumatic paddle shift system

Suspension Modifications

(F) McPherson suspension strut, adjustable in height/wheel camber/track

(R) Multilink rear suspension, adjustable in height/wheel camber/track

Racing shock absorbers with forged supporting mounts

Double-blade type anti-roll bar

Brake System Modifications

Two independent brake circuits for front and rear axle with driver adjustability

(F/R) 380mm vented/slotted brake disc with ventilation routing

Wheels

(F) 18×10.5J ET 28 single-piece light-alloy center lock

(R) 18×12.0J ET 53 single-piece light-alloy center lock

Tires

Tires are Pirelli P Zero Racing Slicks, in width ranging from 245mm to 315mm.

Smaller-power model sports cars with a lower permissible prep level. Also, SRO GT4 cars. RWD, FWD and AWD are permitted as are turbocharged and normally-aspirated vehicles. Power range is 300-400 whp.

Bodywork Modifications

Body panels are generally stock. Aftermarket wings and splitters are permitted.

Chassis Modifications

Interior may be removed except dashboard. Miscellaneous unused mounting brackets may be removed. Chassis seams may be welded. Doors must be capable of being opened from inside and outside. Driver’s seat may be moved rearward as long as the seat back at the driver’s shoulders does not pass the vertical plane of the rear seat shelf. Windshield wipers may be removed, but an operational motor must remain in place.

Safety Modifications

A full rollcage must be used. The rollcages typically have eight main attachment points within the cockpit/trunk. The A-pillar, B-pillar and roof may be stitch-welded to the rollcage. Fuel cells are required, unless stock fuel tank is located between frame rails and the axles.

The driver’s safety equipment includes a racing seat, six- or seven-point harness, full-face helmet, head/neck restraint, window net, right-side head restraint net, side-impact protection, driver leg support system, multi-layer suit, fire-resistant shoes, gloves and underwear and a three-zone fire system.

Engine Modifications

Engines may be blueprinted and balanced. Full-prep engines may replace reciprocating internals. Custom intake manifolds may be allowed if deemed necessary. Engine management systems are free. Ignition system component may be replaced. Must maintain an operational on-board starter.

Noise limit is 110dBa. Any ECU/PCM may be used without penalty. Dry sump systems are permitted. Any cold air induction kit may be used without penalty.

Drivetrain Modifications

Transmission and differential coolers may be added. Limited-slip differentials are permitted.

Suspension Modifications

The OEM-type of suspension must be retained (i.e. McPherson strut, double A-arm, etc.) Alternate control arms may be submitted for approval. Shocks and springs are free, but must remain in stock location. Anti-sway bars are free. Steering geometry may be modified to correct bump steer.

Brake System Modifications

Brake pads, fluid, proportioning valves and lines are unrestricted. ABS may be removed or deactivated. Some vehicles may be permitted aftermarket calipers or rotors.

Wheels

Wheel offset is free, provided the approved bodywork covers the portion of the tire that contacts the track.

Wheel diameters range from 17″ to 18″, widths from 8″ to 11″.

Tires

Tires are Pirelli P Zero Racing Slicks, in width ranging from 245mm to 315mm.

Moderately modified production-based cars along with customer TCR vehicles balanced to the class. FWD or RWD platforms, turbocharged and normally-aspirated powerplants permitted. Power range is 240 – 300 whp.

Bodywork Modifications

Stock body panels may be lightened. Body panels must maintain stock profile, unless alternate panel is approved. Non-essential trim may be removed.

Body panels are generally stock. Only OEM wings as delivered on the production car are permitted.

Chassis Modifications

Interior may be removed except dashboard. Miscellaneous unused mounting brackets may be removed. Chassis seams may be welded. Doors must be capable of being opened from inside and outside. Driver’s seat may be moved rearward as long as the seat back at the driver’s shoulders does not pass the vertical plane of the rear seat shelf. Windshield wipers may be removed, but an operational motor must remain in place.

Safety Modifications

A full rollcage must be used. The rollcages typically have eight main attachment points within the cockpit/trunk. The A-pillar, B-pillar and roof may be stitch-welded to the rollcage. Fuel cells are required, unless stock fuel tank is located between frame rails and the axles.

The driver’s safety equipment includes a racing seat, six- or seven-point harness, full-face helmet, head/neck restraint, window net, right-side head restraint net, side-impact protection, driver leg support system, multi-layer suit, fire-resistant shoes, gloves and underwear and a three-zone fire system.

Engine Modifications

Engines may be blueprinted and balanced. Full-prep engines may replace reciprocating internals. Custom intake manifolds may be allowed if deemed necessary. Engine management systems are free. Ignition system component may be replaced. Must maintain an operational on-board starter.

Noise limit is 110dBa. Only electronic driver aids installed from the factory are permitted.

Drivetrain Modifications

Transmission and differential coolers may be added. Limited-slip differentials are permitted.

Suspension Modifications

The OEM-type of suspension must be retained (i.e. McPherson strut, double A-arm, etc.) Alternate control arms may be submitted for approval. Shocks and springs are free, but must remain in stock location. Anti-sway bars are free. Steering geometry may be modified to correct bump steer.

Brake System Modifications

Brake pads, fluid, proportioning valves and lines are unrestricted. ABS may be removed or deactivated. Some vehicles may be permitted aftermarket calipers or rotors.

Wheels

Wheel offset is free, provided the approved bodywork covers the portion of the tire that contacts the track.

Wheel diameter is 17″. The maximum wheel width is 8″.

Tires

Tires are Pirelli P Zero Racing Slicks, in width ranging from 245mm to 315mm.

Limited-preparation versions of TC cars, with lower horsepower ratings. FWD or RWD platforms, and turbocharged or normally-aspirated powerplants permitted. Power range is 160 – 185 whp.

Bodywork Modifications

Stock body panels may be lightened. Body panels must maintain stock profile, unless alternate panel is approved. Non-essential trim may be removed.

Chassis Modifications

Interior may be removed except dashboard. Miscellaneous unused mounting brackets may be removed. Chassis seams may be welded. Doors must be capable of being opened from inside and outside. Driver’s seat may be moved rearward as long as the seat back at the driver’s shoulders does not pass the vertical plane of the rear seat shelf. Windshield wipers may be removed, but an operational motor must remain in place.

Safety Modifications

A full rollcage must be used. The rollcages typically have eight main attachment points within the cockpit/trunk. The A-pillar, B-pillar and roof may be stitch-welded to the rollcage. Fuel cells are required, unless stock fuel tank is located between frame rails and the axles.

The driver’s safety equipment includes a racing seat, six- or seven-point harness, full-face helmet, head/neck restraint, window net, right-side head restraint net, side-impact protection, driver leg support system, multi-layer suit, fire-resistant shoes, gloves and underwear and a three-zone fire system.

Engine Modifications

Engines may be blueprinted and balanced. Full-prep engines may replace reciprocating internals. Custom intake manifolds may be allowed if deemed necessary. Engine management systems are free. Ignition system component may be replaced. Must maintain an operational on-board starter.

Drivetrain Modifications

Transmission and differential coolers may be added. Limited-slip differentials are permitted.

Suspension Modifications

The OEM-type of suspension must be retained (i.e. McPherson strut, double A-arm, etc.) Alternate control arms may be submitted for approval. Shocks and springs are free, but must remain in stock location. Anti-sway bars are free. Steering geometry may be modified to correct bump steer.

Brake System Modifications

Brake pads, fluid, proportioning valves and lines are unrestricted. ABS may be removed or deactivated. Some vehicles may be permitted aftermarket calipers or rotors.

Wheels

Wheel offset is free, provided the approved bodywork covers the portion of the tire that contacts the track.

Wheel diameter is 17″. The maximum wheel width is 8″.

Tires

Tires are Pirelli P Zero Racing Slicks, in width ranging from 245mm to 315mm.

Small stock-style class, using manufacturer-set specifications. Horsepower range is 100 – 110 whp.

Bodywork Modifications

Stock body panels may be lightened. Body panels must maintain stock profile, unless alternate panel is approved. Non-essential trim may be removed.

Chassis Modifications

Interior may be removed except dashboard. Miscellaneous unused mounting brackets may be removed. Chassis seams may be welded. Doors must be capable of being opened from inside and outside. Driver’s seat may be moved rearward as long as the seat back at the driver’s shoulders does not pass the vertical plane of the rear seat shelf. Windshield wipers may be removed, but an operational motor must remain in place.

Safety Modifications

A full rollcage must be used. The rollcages typically have eight main attachment points within the cockpit/trunk. The A-pillar, B-pillar and roof may be stitch-welded to the rollcage. Fuel cells are required, unless stock fuel tank is located between frame rails and the axles.

The driver’s safety equipment includes a racing seat, six- or seven-point harness, full-face helmet, head/neck restraint, window net, right-side head restraint net, side-impact protection, driver leg support system, multi-layer suit, fire-resistant shoes, gloves and underwear and a three-zone fire system.

Engine Modifications

Engines may be blueprinted and balanced. Full-prep engines may replace reciprocating internals. Custom intake manifolds may be allowed if deemed necessary. Engine management systems are free. Ignition system component may be replaced. Must maintain an operational on-board starter.

Drivetrain Modifications

Transmission and differential coolers may be added. Limited-slip differentials are permitted.

Suspension Modifications

The OEM-type of suspension must be retained (i.e. McPherson strut, double A-arm, etc.) Alternate control arms may be submitted for approval. Shocks and springs are free, but must remain in stock location. Anti-sway bars are free. Steering geometry may be modified to correct bump steer.

Brake System Modifications

Brake pads, fluid, proportioning valves and lines are unrestricted. ABS may be removed or deactivated. Some vehicles may be permitted aftermarket calipers or rotors.

Wheels

Wheel offset is free, provided the approved bodywork covers the portion of the tire that contacts the track.

Wheel/rim diameter minimum is 15″. The maximum wheel/rim width is 7″. Minimum wheel/rim weight is 13 lbs.

Tires

Tires are Pirelli P Zero Racing Slicks, in width ranging from 245mm to 315mm.