BDS Suspension expands its lineup of new 5.5” lift systems for the 2014-2017 RAM 2500 4WD gas trucks equipped with factory rear air-ride. These kits join the current 6” lift systems for air-ride RAM 2500 diesel truck applications available in both standard radius arm drop bracket and 4-link conversion configurations. These new 5.5" suspension systems offer improved performance, capability, and room for 37" tires under your late model air-ride equipped RAM 2500. These new lift systems integrate flawlessly to allow full use of the factory rear air ride system to maintain ride height even when carrying heavy loads. See below for more info.

As with all BDS lift kits, these kits are backed by Factory Protection Plus for peace of mind wherever your adventures may take you. Factory Protection Plus includes BDS’s exclusive No Fine Print Warranty along with a 5-year, 60,000-mile drivetrain warranty.

Product Description

5.5" Lift Systems for air-ride RAM 2500 gas trucks

Vehicle Fitment

2014-2017 RAM 2500 4WD w/ rear Air Ride
*gas engine models only
[Click for Air Ride RAM 2500 Diesel Kits]

5.5'' Kit Features

  • Available with drop bracket or 4-link conversion
  • progressive rate coil springs
  • T-case indexing to improve driveline angle
  • Retains functionality of rear airbags
  • Allows fitment of 37" tires

Rec'd Max Wheel/Tire Specs

37x12.50 tires on 17x9/18x9/20x9 wheels (4.5-5" BSing)

Kit ID Number(s)

#1629H (5.5" Standard System)
#1630H (5.5" 4-Link System)


$1783.02 (#1629H)
$2452.40 (#1630H)

Available Accessories

FOX 2.0 IFP Performance Gas Shocks
FOX 2.0 Single Steering Stabilizer (#98224018)
Dual Steering Stabilizer Brackets (#55370)
Dual NX2 Steering Stabilizer ea. (#85422 )
Dual FOX 2.0 Stabilizer ea. (#98224016)
Adjustable Front Track Bar (#123202)
Adjustable Rear Track Bar (#122609)
HD Sway Bar Disconnects (#122414)
*additional accessories available, see website

Factory Protection Plus
  • 5-year, 60,000 mile drivetrain Warranty
  • BDS’s exclusive No Fine Print Warranty

© BDS Suspension, 491 W. Garfield Ave. Coldwater, MI 49036
(517) 279-2135 | |

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BDS 5.5" 4-Link System
BDS 5.5" Radius Arm Drop Kit for RAM 2500 Gas Trucks w/ rear Air Ride

Since 2014 when RAM introduced the optional rear air ride suspension there has been a buzz over how it performs and curiosity about how it will hold up over time.  Both of those questions have been answered with years of use and abuse from truck owners with very few air ride system failures. With that success and the long term testing of new products by the BDS engineering department, expands to include new 5.5" lift options available for the rear air ride equipped RAM 2500 4wd gas trucks joining the diesel truck kits released earlier this year.

Up front BDS Suspension offers 2 versions of this lift kit; the standard and the 4-link conversion. Both use a specially designed pair of progressive rate ProRide front coil springs for optimal performance across any terrain, heavy duty fabricated track bar bracket and forged drop pitman arm to correct steering geometry, extended bump stops and sway bar relocation and brake line relocation brackets to keep the suspension functioning properly. Also standard in the 5.5" kits a high clearance transmission crossmember and transfer case indexing ring kit are supplied to allow the stock driveshafts to be reinstalled. The standard 5.5" system retains the factory front radius arms and corrects the suspension geometry by  adding a pair of 1/4" steel frame-mounted drop brackets. The 4-link converts the factory radius arms over to a much stronger 4-link design for improved stability, handling and articulation. The 4-link limits caster change throughout wheel travel for much more predictable driving habits. It uses 1/4" steel brackets that key off the factory radius arm mounts for increased strength and use 2" OD x 3/16"-wall DOM control arms with large 2-1/2" OD polyurethane bushings for smooth, quiet operation. Rounding out the front are your choice of BDS-NX2 series or FOX 2.0 IFP gas shocks for improved performance.

In the rear both lift kits are designed to work with the factory rear air ride system. 1/4" steel, 5" tall gusseted air bag spacers are used along with a rear track bar bracket to correct axle positioning, extended length sway bar links, and bump stop extensions. BDS supplies new air ride leveling sensor brackets to position the ride height sensors at the stock angle. This allows the rear suspension to perform just like it does at factory ride height and maintain full air bag range of motion. The rear suspension is rounded out with your choice of BDS NX2 Nitro or FOX 2.0 performance gas shocks.

Along with these new systems, BDS offers several accessories including shocks and steering stabilizer kits, adjustable track bars, stainless steel brake lines and more. The 5.5" suspension systems allow for up to 37" tires to be installed. Upgrade your rear air ride equipped RAM 2500 with BDS Suspension.

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