Carli Suspension  |  SKU: CS-DUC35-12-D

12-13 RAM 2500/3500 DIESEL 3" UNCHAINED 3.5 LONG ARM SYSTEM BASE

Regular price $ 13,72800

Can I pick up my order or have it installed at your shop?

Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.

How do I know if this part fits my vehicle?

Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.

What if I need to return a product or it’s defective?

Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)

What's the lead time on custom or fabricated parts?

Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.

Description

12-13 RAM 2500/3500 DIESEL 3" UNCHAINED 3.5 LONG ARM SYSTEM BASE

Brand: Carli Suspension

SKU: CS-DUC35-12-D

Base Kit Includes:

CS-DLRC-10-D Linear-Rate Coils
CS-DLA3-10 Long Arm System
CS-DATB-03 Track Bar
CS-DUC35SPKG-03-D-LA Unchained 3.5 Shocks, Stainless Shafts, Limit Straps, Reservoir Mounts
CS-DFST625 Fabricated Shock Tower
CS-DRSMKIT-03 Rear Shock Mounts
CS-DFBD-1 Front Bump Drop 1″
CS-D3BBL-12 Braided Brake Lines
CS-D30GUSSET Rear Gusset Kit
CS-HOLESAWKIT-4.5 4″ Hole Saw and Arbor

 

The Unchained is a purpose-built kit. 3.5" Front Kings and 4-Tube Bypass rear 3.0" shocks are optioned with a Torsion Sway Bar, High Clearance Control Arms, and Full Leaf in the rear for unsurpassed off-road capability from a bolt-on suspension system. A roll cage should be considered at this level of suspension.

  • Shock Diameter - 3.5"
  • Front Lift - 3"
  • Rear Lift - 2"
  • Tires Size - Up To 37"
  • Front Travel - 11.25"
  • Rear Travel - 13"

Base Kit Includes

Please Note: This system requires the Torsion Sway Bar and Full Progressive Leaf Springs to function properly.

Description:

Where the Performance 2.5” Long Arm System is more balanced, the tuning in the UnChained System is enough to put the build quality of the rest of the truck to the test and will ride a bit stiffer on the road than our other high-end systems; albeit, still much better than stock.

At this level of suspension, customers should install a cage as the off-road capability far exceeds the capability of the truck itself. The Front Boasts massive, long-travel 3.5” King Shocks with an off-road oriented tune; the rear, 3.0” 4-Tube King Bypass Shocks. The 4-tube bypass will have far more bottom-out resistance than their smooth-body counterparts and their capability is user tunable to achieve exactly the rear ride desired by the purchaser (More on this in “The Details”).

What does all this mean? Uncompromised off-road ability with a civil on-road ride resulting in a truck that’s a blast to drive in all environments.

The Details:

With the release of the 3" Long Arm, comes the Long-Arm equipped Systems. The decision has been made to discontinue the older, short-arm variation of the UnChained 3.5" in favor of a Long-Arm equipped, extended travel version at which you’re looking now.

This system requires customers to cut off the factory control arm mounts in favor of the Carli Drop Brackets to house our internally gusseted, fully fabricated Long Arm System.

These arms are over 50% longer than the factory arms boasting 3/16” cold-rolled steel construction, internal gusseting, extended travel capability, more linear travel stroke and a better ride quality given their length and position parallel to the ground.

Wheel and Tire:

This system will fit up to a 37”x12.5” tire with on 17”-18” wheels with 5-5.25” of backspacing. If considering Fiberglass Fenders, a 4.5” Backspacing on a 9” Wide wheels will fit up to a 37x13.5” wide tire. This system was tuned with 17” wheels on, 37” Toyo M/T at 40F/35R. The more rubber, the better the small bump compliance will be at proper inflation pressures. The ride will firm up as you go larger in wheel diameter. For more details, see our article on wheel and tire selection and tire pressures:

System Notes:

  • Wheels - Carli Recommends a 17"-18" Wheel, no more than 9" wide with 5.75" of Backspacing on Leveling Systems
  • Tires - 37", E-Rated Tire Fitment is Recommended. Recommended unloaded Tire Pressure 40F/35R
  • Recommended Configuration - Carli Leveling Systems are Designed and Tested on Vehicles with 17"-18" Wheels with 37", E-Rated Tires. Stock wheels and tires or running a larger wheel diameter will result in a stiffer ride.
  • Torsion Sway Bar - Selection of the Torsion Sway Bar Replacement will not Require size selection as the entire sway bar assembly is replaced.
  • Leaf Springs - 37" Tires will fit with the above wheel specifications if the system is equipped with Full Replacement Leaf Springs and Control Arms.

Fitment :

  • Vehicle Year - 12-13
  • Model - 2500/3500
  • Engine - Diesel
  • Lift Height - 3"