Carli Suspension Progressive Add-A-Pack Side Leaf Spring

Carli Suspension Progressive Add-A-Pack side leaf springs are rear leaf helper springs. Each one replaces the factory lower overload leaf with a mini pack of thinner progressive leaves. The result is smoother spring engagement, better rear ride quality and more predictable handling. They suit lifted and leveled trucks and also work well with a Carli suspension system.

Key Features:

• Replaces the lower overload leaf: The thick overload leaf does not follow the contour of the factory pack. It is removed and replaced with several thinner-gauge leaves.
• Progressive spring rate: Removing the stiff "wall" in the factory pack makes spring engagement and disengagement smoother. This improves ride quality and traction, and it helps tame harsh rebound from medium to large bumps.
• Factory load capacity maintained: The factory main leaves still set the load capacity, so the original capacity is kept while ride improves.
• Rear lift or leveling: Add-A-Pack springs are used to raise the rear stance and match it to Carli front lift or leveling systems.
• Quality construction: Carli's progressive add-a-pack designs are built with Deaver Spring, a U.S. leaf spring manufacturer.
• Installation hardware: Depending on the application, supporting hardware such as U-bolts, center pins, blocks or bump stop drops may be supplied.

Carli Suspension is known for performance off-road suspension for trucks. Add-A-Pack springs give a straightforward way to improve rear ride, traction and control without replacing the whole factory leaf pack.