4" 2025-2026 Dodge Ram 3500 4WD (w/Diesel Engine) Extended Travel 4-Link Lift Kit by BDS Suspension

The BDS 2155H / 2155FS 4-Inch Extended Travel 4-Link Lift Kit for 2025-up diesel-powered Ram 3500 trucks is engineered to deliver exceptional ride quality, improved handling, and increased suspension travel while maintaining excellent on-road comfort. Designed specifically for the diesel platform, this premium suspension system provides clearance for up to 37-inch tires and features configurable suspension components that allow the truck to be tailored for daily driving, towing, overlanding, or aggressive off-road use.

At the heart of the system is a heavy-duty 4-link front suspension that replaces the factory control arms to properly position the front axle while significantly reducing suspension bind throughout the suspension's travel. By allowing each suspension link to articulate independently, the 4-link design maintains more consistent caster and pinion angles, improving steering return, braking stability, ride quality, and overall handling. A forged adjustable front track bar precisely centers the axle after installation, while the included 10-bolt transfer case indexing ring optimizes driveline angles and increases suspension droop for improved off-road capability. Pro-Ride dual-rate 4-inch lift coil springs provide great ride quality. 

Rear lift configurations are available to accommodate multiple factory suspension setups, including trucks with or without factory overload leaf springs, as well as models with OEM rear air-assist suspension.

Complete the system by selecting from BDS NX2 Nitro shocks, FOX 2.0 Performance Series IFP, FOX 2.5 Performance Series HTO, or FOX 2.5 Performance Elite DSC shocks to match your preferred ride quality and off-road performance.

Built with BDS Suspension's commitment to strength, durability, and long-term reliability, the 2155H Extended Travel 4-Link Lift Kit delivers outstanding suspension performance, corrected geometry, and confidence-inspiring control whether you're towing heavy loads, exploring backcountry trails, or putting in highway miles.

Features & Benefits

• Fits 2025-up Ram 3500 diesel models
• Provides 4 inches of suspension lift
• Allows clearance for up to 37-inch tires
• Heavy-duty 4-link front suspension improves suspension articulation and reduces bind
• Maintains consistent caster and pinion angles throughout suspension travel
• Includes forged adjustable front track bar for precise axle centering
• Includes transfer case indexing ring to optimize driveline angles and increase suspension droop
• Includes sway bar correction and brake line relocation brackets
• Pro-Ride dual-rate fornt coil springs 
• Rear lift configurations available for factory overload leaf spring and OEM rear air assist equipped trucks
• Rear lift options include 2-inch or 3-inch lift blocks depending on vehicle configuration
• Available with BDS NX2 Nitro Series shocks (2-inch steel body)
• Available with FOX 2.0 Performance Series IFP shocks (2-inch aluminum body)
• Available with FOX 2.5 Performance Series HTO shocks featuring Hydraulic Top-Out technology (2.5-inch aluminum body)
• Available with FOX 2.5 Performance Elite DSC shocks for maximum adjustability (2.5-inch aluminum body, adjustable firmness)
• Designed specifically for diesel-powered Ram 3500 trucks
• Improves ride quality, steering precision, suspension travel, and off-road capability

Tires & Wheels Fitment

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

Premium Quality, Lifetime Warranty, and Protection

BDS Suspension manufactures only premium-quality suspension products. Proudly built in the USA. All are backed by a "No Fine Print" limited lifetime warranty. Guaranteeing all products to be free from defects in material and workmanship to the original retail purchaser. If you break it, they replace it...period.