MacPherson strut
![A simple MacPherson strut suspension on the right front wheel of a rear-wheel drive vehicle. The front of the vehicle is at bottom left of the image.
Red: Steering knuckle or hub carrier
Blue: Lower control arm or track control arm
Light blue: Steering gear tie rod or track rod
Lower purple: Radius rod
Upper purple: Coil spring
Yellow: Tubular housing containing shock absorber or damper](/Images/godic/202502/17/Mcpherson_strut1018.jpg")
The MacPherson strut is a type of car suspension system which uses the top of a telescopic damper as the upper steering pivot. It is widely used in the front suspension of modern vehicles and is named for American automotive engineer Earle S. MacPherson, who originally invented and developed the design.