Dallara IR-12 Chassis with Dallara IR-18 Aero Kit

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

Materials Carbon fiber, kevlar and other composites

Weight Approximately 1,700 lbs (Road/Street Courses), 1,690 lbs (Short Ovals) and 1,655 lbs (Speedways) (Does not include fuel, driver, drink bottle and contents and 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″ dia., 10″ wide, min. weight: 13.48lbs
Rear: 15″ dia., 14″ wide, min weight: 14.7lbs

Tires Firestone Firehawk
Front dia.: 26″ max., 25″ min.
Rear dia.: 27.5″ ma., 26.5″ min.

Brakes PFC CR90 monobloc aluminum calipers with PFC carbon-carbon brake 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)

Honda Indy Turbo V-6 Engine


Honda’s engine for the 2022 NTT INDYCAR SERIES, the tenth year of the turbocharged V6 era, is designated the HI22TT [Honda IndyCar 2022 Twin Turbo].  Honda and Chevrolet again will compete for the IndyCar Manufacturers’ Championship.

Honda’s HI22TT is a 2.2-liter, six-cylinder, twin-turbocharged engine. Cylinder bore is restricted to a maximum of 95mm, while stroke is free. Maximum engine revolutions per minute are a series-mandated 12,000 rpm.

Features of the engine include direct fuel injection, two Borg-Warner turbochargers, “Drive-by-Wire” throttle technology and a series-spec Cosworth Engineering Engine Control Unit (ECU).


Engine Type Twin turbocharged, fuel-injected, aluminum alloy V6

Displacement 2.2 liters (134.25 cubic inches)

Valve Train Dual overhead camshaft, four valves per cylinder

Crankshaft Alloy steel, four main bearing caps

Pistons Forged aluminum alloy

Connecting Rods Machined alloy steel

Ignition System Inductive

Injection System Electronic combined direct and indirect fuel injection

Lubrication Dry sump system, featuring multi-stage scavenge pumps

Cooling Single mechanical water pump feeding a single-sided cooling system

Transmission Six-speed sequential, paddle-operated, with a hand-operated clutch

Fuel IndyCar Series-mandated E85 race fuel

Weight Approximately 250 lbs. (112.5 kg.), series-mandated minimum weight

Contact Meyer Shank Racing
3001 Etna Parkway
Pataskala, Ohio 43062
Office Phone: 740.964.9998