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How to Install Max Trac 2 in. Rear Lowering Shackles on your F-150

Installation Time

2 hours

American Muscle
Shop Parts in this Guide

PARTS LIST

LOWERING SHACKLES: 2

Before the installation of shackles, it may be required to remove the trailer hitch to access the shackle access the shackle mounts.

1. Jack up the rear of the vehicle using floor jacks, prepare to install both sides at the same time
to avoid binding spring bolts.

2. Support the rear axle with floor jack under the differential.

3. Remove the lower shackle bolts.

4. Jack up the rear end enough to remove the upper shackle bolt.

5. Lightly grease the supplied bushing / sleeves and install the new shackle, with the

6. Install wheels, and lower the vehicle to the ground.

Its best to cycle the suspension and take the vehicle for a drive before observing the amount of drop provided by the aftermarket shackles.

After Installation:

• Check torque on all fasteners for proper torque.

• Readjust headlight settings to account for change in height and angle

• Re‐check torque after 500 miles.