Anatomy of an INDYCAR

NTT INDYCAR SERIES Car Specifications


Manufacturer: Dallara Automobili, Italy

Model: Dallara IR-12 chassis (2012-present) with Dallara IR-18 aero kit 

Construction: Monocoque contains cockpit, aeroscreen, fuel cell and front suspension; engine is stressed (integral) member of chassis; rear assembly contains bellhousing (and hybrid technology), gearbox and rear suspension members

Materials: Carbon fiber, Kevlar and other composites

Weight: Approximately 1,700 pounds (Road/Street Courses), 1,690 pounds (Short Ovals) and 1,655 pounds (Speedways) (Does not include fuel/driver/drink bottle and contents/driver equivalency weight)

Length: Approximately 201.7 inches

Width: 76.5 inches maximum, 75.5 inches minimum (75.75 inches minimum and 76.75 inches maximum for ovals) measured outside rim to rim

Height: Approximately 40 inches

Wheelbase: 117.5 to 121.5 inches

Wheel Size:

• Front: 15 inches diameter, 10 inches wide. Minimum weight: 13.48 pounds

• Rear: 15 inches diameter, 14 inches wide. Minimum weight: 14.7 pounds

Tires: Firestone Firehawk

• Front diameter: 26 inches maximum, 25 inches minimum @ 35 psi

• Rear diameter: 27.5 inches maximum, 26.5 inches minimum @ 35 psi

Brakes: PFC CR90 monobloc aluminum calipers with PFC carbon-carbon discs and pads

Gearbox: XTRAC #1011 gearbox. Six forward gears, one reverse gear, Mega-Line Assisted Gear Shift (paddle-shift)

Fuel Cell: Single, rupture-proof cell, 18.5 U.S. gallons (standard)

Scott Dixon


Manufacturers: American Honda Motor Co., Inc., Chevrolet

Models: Honda HI24E hybrid Indy-V-6, Chevy INDYCAR V6

Type: 2.2-liter (134.25 cubic inches) V-6, twin-turbocharged (maximum bore diameter 95 millimeters) with hybrid technology

Weight: Minimum weight is 248 pounds (112.5 kilograms)

Turbocharging: Twin BorgWarner EFR 7163 turbochargers

RPM: 12,000 maximum (INDYCAR-supplied rev limiter)

Maximum Boost Pressure: (above atmosphere);1,300 mbar (Superspeedways); 1500 mbar (short ovals, Road/Street Courses and Indianapolis 500 qualifying); 1650 mbar (Push-To-Pass)

Power: Estimated 650-700 horsepower, depending on turbo boost pressure used at track, with up to an additional 150 horsepower available via the hybrid unit

Fuel: Shell 100% Renewable Race Fuel (ethanol)

Injectors: Maximum two injectors per cylinder, one for direct injection, 300 bar maximum fuel system pressure

ECU (Engine Control Unit): McLaren Applied Technologies TAG 400i

Throttle: Drive-by-wire controlled port throttles