The Ford Mustang GT4 brings the raw attitude of American muscle into the tightly balanced world of GT4 racing. Designed and developed in partnership with Multimatic Motorsport, the car translates Ford’s heritage into a package that is both modern and competitive. Underneath the aggressive bodywork is a purpose-built race machine that combines brute strength with precision handling, making it a standout option for customer teams across the globe.
Powered by Ford Performance’s 5.0-liter Coyote V8, the Mustang GT4 delivers an unmistakable soundtrack and a healthy 500 horsepower—plenty of muscle to hold its own against European rivals. Beyond the engine, every component has been chosen for endurance racing performance: a sequential gearbox for lightning-fast shifts, Multimatic DSSV dampers for consistent handling, and Brembo racing brakes for repeatable stopping power. Add in lightweight composites, Michelin racing tires, and a sizeable fuel tank, and you have a GT4 car ready to go the distance.
Here’s a full breakdown of the Mustang GT4’s specifications as it appears in iRacing:
| Spec | Detail |
|---|---|
| Horsepower | 500 HP |
| Engine Type | 5.0 L Coyote V8, naturally aspirated |
| Transmission | 6-speed sequential |
| Fuel Tank Size | 26.4 gallons |
| Weight | 3,241 lbs |
| Chassis | Unibody with natural fiber composites |
| Suspension | MacPherson strut front, multi-link rear |
| Brakes | Brembo, 6-piston front; 4-piston rear; iron rotors with ABS |
| Wheels | 11″ x 18″ front & rear |
| Tires | Michelin S9M 30/68-18 front & rear |
| Dimensions (L x W x H) | 192.8″ x 75.4″ x 54.0″ |
| Wheelbase | 106.7″ |
How It Drives in iRacing
On track, the Mustang GT4 feels every bit as muscular as its spec sheet suggests, but it’s not a blunt instrument. The naturally aspirated V8 delivers power smoothly, which makes throttle application out of slow corners predictable and confidence-inspiring. The car has a planted front end thanks to the MacPherson strut suspension and aero package, while the rear can step out if you get greedy with the throttle—classic Mustang character, but with far more control than its road-going cousins.
The sequential gearbox keeps the rhythm quick and aggressive, allowing you to focus more on braking and corner entry. Speaking of braking, the Brembo package is one of the highlights: it can take lap after lap of hard braking without fading, which is especially noticeable in endurance runs. Over long stints, the Michelin S9M tires provide consistent grip, though you’ll feel the car demand smoother inputs as they wear.
In short, the Mustang GT4 in iRacing rewards confident, deliberate driving. Push it too hard and it will remind you of its raw power, but if you respect its balance, it’s one of the most satisfying cars to race wheel-to-wheel in the GT4 field.
