Pneumatic Jack

A pneumatic jack, also called an air jack, is a device that uses compressed air to quickly lift a race car off the ground during pit stops, allowing crews to change tires and perform repairs in seconds.

In professional motorsport, every second counts during a pit stop. Traditional car jacks that you might use in your garage require manual pumping or cranking, which takes valuable time. Pneumatic jacks solve this problem by using the power of compressed air to lift the entire car almost instantly with the push of a button or connection of a hose.

These jacks are permanently mounted underneath the race car's frame, typically near each wheel. When not in use, they sit flush against the car's underside. The moment a pit crew member connects a hose carrying compressed air or nitrogen to the car's quick-release coupling, pistons inside the jacks extend downward, pushing against the ground and lifting the car into the air.

Most race cars use three or four air jacks connected by aluminum tubing that runs underneath the vehicle. This network means that one crew member can lift the entire car simultaneously, rather than needing separate people to jack up each corner. This is especially important in racing series that limit how many crew members can work on the car during pit stops.

The speed advantage of pneumatic jacks is significant. While a traditional jack might take several seconds to lift one corner of a car, an air jack system can raise all four corners in under two seconds. When pit stops can be won or lost by fractions of a second, this technology makes a real difference in race outcomes.

Air jack systems are common in high-level motorsport categories including Formula One, IndyCar, endurance racing like the 24 Hours of Le Mans, and GT racing. The systems are engineered specifically for each car and often include safety features like anti-sway mechanisms to prevent the car from rocking while elevated.

The compressed air or nitrogen comes from a portable cylinder that the pit crew brings to the car. A regulator controls the pressure to ensure the lift is smooth and controlled. When the pit stop is complete, releasing the pressure allows the car to lower gently back to the ground as internal springs retract the pistons.

While pneumatic jacks represent sophisticated technology made from lightweight materials like aluminum, the basic principle is simple: compressed gas provides the force to extend pistons that lift the car. This elegant solution has become standard equipment in professional racing because it combines speed, safety, and efficiency in a way that manual jacks simply cannot match.