2013-2018 Ram 3500 4X4 Diesel Full Progressive Rear Leaf Spring Kit - 1-2in Lift (Non Air-Assist)

Why these springs

A 1-ton Ram 3500 rear is sprung for a full load, so empty it rides hard and can hop or wrap the axle under power. These Carli full-length progressive leaf packs, built by Deaver Spring for Carli, are two-stage. They start soft at ride height for a smoother street ride, then firm up as weight goes on, so the truck still works.

Who it's for & where it fits in Carli's lineup

This is a stand-alone rear component for the daily driver and weekend off-roader. Carli pairs it with its 3″ Ram systems, where it keeps a slight rear-high stance. It's a ride-quality upgrade, so it trades some capacity for comfort (see payload below).

Key specs (per Carli)

What's included

• Carli full-length progressive rear leaf spring packs (made by Deaver Spring Mfg. for Carli)
• Carli install instructions (CS-DFSP-03(10)-D(H)) are available from Carli

Fitment notes

• Fits 2013–2018 Ram 3500 4×4 with the 6.7L Cummins diesel and a 4″ rear axle tube. Measure your axle tube before ordering.
• Will NOT fit trucks with factory rear air-assist / auto-level. Carli makes a separate air-suspension version (CS-DFSP-13-D-ALAS) for those trucks.
• Payload drops to light ¾-ton. If you tow or haul heavy, plan for that.
• Steering: not applicable. This is a rear-only part.
• Cab / bed: Carli lists no cab or bed limits.

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.