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Rear steer can be adjusted on an asphalt car by changing the angles of the trailing links. These angles are very critical and even small changes can have a profound effect on the handling of your asphalt car. Dirt Late Model and Modified cars' rear suspensions, as shown, are mostly either of a four-bar design or a swing arm. Both are adjustable for angles of the links so that we can easily control and dial in desired rear steer characteristics. The science of dirt car setup is as complicated and challenging as any race car that exists.