Carli's leveling full progressive rear leaf springs are a fantastic way to improve ride, control and handling on your Ford Super Duty truck. Designed to match a level height front, these leaf packs are offered in a few different configurations to ensure your capacity needs are met. All options massively increase wheel travel and articulation to over 12" so if you spend any time off road, it's a welcome improvement. These are also a critical part of softening the rear ride on your truck compared to the harsh, factory leaf packs- even on pavement. Carli leaf packs also mount directly to the axle, meaning you can eliminate the stock block and the axle wrap associated with them.
WHICH LEAF PACK IS RIGHT FOR YOU:
Carli offers these leaf packs in several spring rate variations depending on how you use your truck. The standard soft ride leaf packs are designed for trucks that spend any amount of time empty, and then have variable loads placed in or on them like trailers and gear in the bed. Since these are softer than stock, we pair them with these Full Travel Airbags to maintain towing capacity and variable bed load capacity. That allows you to have your cake and eat it too with soft daily ride and full ability to haul.
Carli also offers three levels of HD leaf packs. These are intended ONLY for trucks with full time in bed load like tool storage systems, in bed campers, service bodies, or welding beds. They are offered in the HD variant for about 500-1,000lbs of constant load, XHD variant for about 2,000 pounds of constant load, and XXHD variant for about 3,500 pounds of constant load. These can also be paired with Full Travel airbags for towing on top of the listed static loads, like pulling a trailer behind your truck with an in bed camper. We don't recommend these if your truck spends time empty, as you'll sit rear high and won't have the proper ride. These HD shocks also come with specific valving profiles of Carli Pintop shocks, so make sure to choose accordingly. We don't recommend using the HD leaf packs with any Carli 2.0 diameter shocks if it can be avoided.
UPGRADE OPTIONS:
This leaf pack can be optioned with shackles and pinion shims. We highly recommend adding Carli shackles as they improve ride and articulation compared to the factory shackles, which limit what's possible with the Carli leaf packs.
The Pinion shims are not mandatory, but can help reduce driveline vibration if present. This has been a noted problem on rare F-250 trucks, but it's not common.
NOTE: These leaf packs DO NOT work with stock shocks from any trim package. Sadly factory shocks are too short, and the valving is significantly off from from what is required with these leaf packs.
INCLUDES
-Pair of rear Carli Progressive Leaf Packs
-U Bolts
-Rear Bump Stop Drops
