2025-2027 Cummins 2500 6" 4-Link Lift Kit

Lift your 2025-2027 Ram 2500 Cummins 6 inches with this extended travel 4-link lift kit from BDS Suspension. It clears 37" tires for a more aggressive stance while keeping proper driveline geometry and everyday drivability.

Up front, Pro-Ride coil springs are built to carry the weight of the diesel engine. A heavy duty 4-link front suspension replaces the factory control arms to position the front axle and cut suspension bind through the full range of travel. Because each link articulates independently, caster and pinion angles stay more consistent, improving straight-line stability, steering return-to-center and braking control on and off the road. A heavy duty track bar bracket re-centers the front axle.

A new 10-bolt transfer case indexing ring clocks the transfer case for better driveline angles and more suspension droop than kits that leave the transfer case alone. Sway bar links, brake line brackets and shocks matched to your chosen option complete the front. In the rear, a pair of BDS Pro-Ride coil springs provide the lift, with matching rear shocks.

Lift Specs:

• Front Lift: 6" (coil spring)
• Rear Lift: 4.5" (coil spring)
• Max Tire Size: 37"

• Extended travel shocks with a transfer case indexing ring.
• 4-link front suspension keeps caster consistent through the full range of travel.
• High strength dual rate front coil springs for a great ride on any terrain.
• Heavy duty track bar bracket re-centers the front axle.
• Front sway bar correction maintains handling performance.
• Choice of BDS NX2 Nitro or FOX shocks.

NX2 Nitro Features:

• Nitrogen-charged
• Twin-tube design
• 10-stage velocity-sensitive valving
• Dual-welded ends for increased strength
• 1-3/8-inch high-flow piston
• Self-lubricating seals
• Silver powder coat finish

FOX 2.0 Performance Series Features:

• 2-inch Impact extruded aluminum body
• Internal floating piston (IFP) monotube design
• CNC machined 6061-T6 aluminum mounting ends
• Massive 5/8-inch hard chrome plated heat-treated alloy steel shaft
• Race-developed high-flow piston design
• Application-specific valving to maximize performance
• Long-lasting clear anodized finish

FOX 2.5 Performance Series HTO Features:

• Increased off-road capabilities
• Easily adjust your shock for terrain, load and speed
• 2.5-inch Impact extruded aluminum body
• 5/8-inch hard chrome plated heat-treated alloy steel shaft
• Hydraulic Top Out (HTO) technology offers usable position-sensitive rebound damping control on and off the pavement
• Fully serviceable for a lifetime of use
• 1-year Manufacturer's Warranty

FOX 2.5 Performance Elite Features:

• Increased off-road capabilities
• Easily adjust your shock for terrain, load and speed
• 2.5-inch Impact extruded aluminum body
• Massive 7/8-inch hard chrome plated heat-treated alloy steel shaft
• External reservoir design separates shock oil from the high-pressure nitrogen
• DSC - Dual Speed Compression Adjuster comes standard
• Fully serviceable for a lifetime of use
• 1-year Manufacturer's Warranty

All Kits:

• One BDS012433 4-Link Box Kit (1 of 2)
• One BDS012434 4-Link Box Kit (2 of 2)
• One BDS032602 6" Front Coil Spring Box Kit
• One BDS012459 4.5" Rear Coil Spring Box Kit
• One BDS122627 10-Bolt Transfer Case Indexing Ring Box Kit

Shock Option:

• NX2 Nitro Series: two BDS85752 and two BDS85756 NX2 shocks
• FOX 2.0 Performance Series: two FOX98224752 and two FOX98224756 FOX 2.0 IFP shocks
• FOX 2.5 Performance Series HTO: two FOX98724048 front and two FOX98724049 rear FOX 2.5 IFP HTO shocks
• FOX 2.5 Performance Elite: one FOX88326064 front and one FOX88326067 rear FOX 2.5 reservoir shock kit with DSC

• Fits 4WD diesel models only.
• Will not fit models equipped with rear air ride.
• Lift height is a base figure. Final ride height varies with payload and the truck's starting ride height, so measure before installation.
• Lifted trucks may develop driveline vibration. Driveline angles may need tuning, and the slip yoke, driveshafts or U-joints may need service or replacement.
• Larger wheel and tire combinations add load to suspension, steering and related components.
• The OE service manual for your truck is required for proper disassembly and reassembly.
• Steering stabilizer not included. Add the BDS2031DH NX2 or BDS2031DF FOX 2.0 dual steering stabilizer kit.
• Optional upgrades: BDS122324 HD adjustable front track bar and BDS122609 adjustable rear track bar.

• 37 x 12.5 with 18 x 9 and 4.5 in. Backspace
• 37 x 12.5 with 20 x 9 and 4.5 in. Backspace
• 37 x 12.5 with 20 x 9 and 5.625 in. Backspace

Installation Guide

Transfer Case Indexing Ring Installation Guide

Estimated installation time is 6-7 hours

Installation Difficulty: Moderate

Tools Required:

• Basic hand tools

BDS No Fine Print Warranty: 5 years / 100,000 miles on BDS suspension system components.

FOX shocks carry a 1-year manufacturer's warranty.

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