Garage - Transmission

The transmission transfers the power of the engine to the tires. Typically the transmission consists of a series of gears linked to the engine through a clutch or torque converter. IHRA allows the user to choose a number of pre-defined transmissions or to customize a manual (with a clutch), or automatic (with a torque converter) transmission.


Suspension can greatly affect the way the car launches from the starting line and the way it behaves down the track. In IHRA Drag Racing, each corner of the car can be modified separately. You can edit the following information:

Spring: This is the spring rate of the suspension. Changes to spring rate affect the way weight is transferred onto the tires. Springs are usually measured in pounds per inch of compression.

Dampers (shocks): Dampers, or shocks, are velocity sensitive and act as additional springs when compressed upwards (called "bump") and act as a spring damper when traveling against the spring's recoil (called "rebound"). Damper strength is typically expressed as a degree of hardness.

Travel: Travel is a measure of distance the shock can move before either bottoming out against the car's frame or being fully extended and hanging. Travel is measured in inches. Travel should be adjusted so that the springs can dampers have sufficient movement, based on the current spring rates, so that the car doesn't bottom out.

Ride Height: This setting allows the overall ride height of the car to be adjusted. The lower the car, the lower the center of gravity. If your car is lifting too easily, try lowering the car.

Anti-Roll Bar: The roll bar affects how weight is transferred laterally or sideways. A roll bar works by applying extra force to the body of the car on the same side of the car that is being compressed. This effectively pushes the body back over to the other side and less weight is transferred. The stiffer the bar, the less weight is transferred. There is only one roll bar setting for the front and one for the rear.

Steering: The way the vehicle steerts can be adjusted through two parameters; lock and ratio. Steer lock is the number of degrees the wheel can turn from left to right. The steer ratio is a measure of the amount of steering input to the actual turn. A value of 10 indicates that for every one degree of wheel turn, the player would have to turn the steering wheel ten degrees. The lower the ratio, the more the wheels will turn in response to steering input.

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