Steering & Suspension: Suspension Systems: Front suspension types & components
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Short/long arm suspension

Summary
In short/long arm suspension the lower control arm pivots on bushes that twist on the lower control arm pin, which is bolted to the cross-member of the vehicle. The lower control arm is longer than the upper control arm.
Short/long arm suspension

The shock absorber is located inside the coil spring, and is a direct acting telescopic type shock absorber.

The coil spring is mounted between the upper and lower control arms.

The lower control arm pivots on bushes. These bushes twist on the lower control arm pin, which is bolted to the cross-member of the vehicle.

The lower control arm is longer than the upper control arm. It moves up and down to accommodate movement in the suspension. These are stop and rebound rubbers. They are used to prevent direct metal-to-metal contact, if the suspension should reach its maximum limit of travel.

The lower ball joint is attached to the lower control arm and allows the steering knuckle to rotate as the steering wheel is turned.

The steering knuckle supports the brake station, wheel bearings and the road wheel.

The upper ball joint is attached to the upper control arm and allows the steering knuckle to rotate as the steering wheel is turned.

The upper control arm pivots on bushes. These bushes twist on the upper control arm pin, which is bolted to the vehicle’s cross-member.