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A suspension lift is a modification, often done by Jeep, truck, SUV and off road enthusiasts to raise the ride height of their vehicle. Suspension lifts (also referred to as lift kits or leveling kits) enable steeper approach, departure, and break-over angles, higher ground clearance, and helps accommodate larger wheels and tires. Due to the increased center of gravity, maximum safe operating angles are reduced with a lift kit.
Each manufactured vehicle usually requires a specific lift kit, and the types of kits vary based on the type of drivetrain that the vehicle has. Kits can be as simple as lift blocks (spacers placed between the axles and leaf springs) and coil spring/strut spacers and extended shocks; to replacement control arms, trailing arms, and custom four-link systems. Suspension lifts also impact other factors, such as drive shaft length, steering geometry and brake lines. Legality is often an issue when installing suspension lift kits, as many jurisdictions have varying laws on vehicle ride height and placement of lights and bumpers.