BDS  |  SKU: BDS645FS

6-Inch Lift Kit - Long Arm for 2003-2007 Dodge Ram 2500/3500 4WD Diesel

Regular price $ 2,67155

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

Engineered by BDS Suspension, this 6-inch lift kit with long arm conversion is designed to enhance the performance and capability of your 2003-2007 Dodge RAM 2500/3500 4WD diesel truck. It includes everything you need for a proper setup, providing clearance for tires up to 37". 

The long lower control arms were built to minimize caster change and create a more controlled steering feeling, while still retaining the factory triangulation for added stability.

The front of the kit features diesel-specific Pro-Ride coil springs, control arms, a drop pitman arm, and a track bar bracket for improved steering. In the rear, the kit includes heavy duty cast steel blocks, longer u-bolts, and NX2 Nitro or FOX 2.0 Performance shocks. Whether on or off-road, this lift kit is built to outperform and exceed your expectations.

 

Pro-Ride Coil Springs

A pair of full-length, diesel-specific, progressive rate Pro-Ride coil springs are supplied to provide the correct lift height and smooth, predictable ride across various terrains. Manufactured from high tensile steel, our direct OE replacement coil springs are engineered with properly sized wire diameter. This results in maximum reliability without premature coil bind.

Steering Correction

To optimize steering geometry once lifted, a forged drop pitman arm is used to minimize the steering angle and pair it with a heavy-duty track bar drop bracket to keep them in phase through suspension travel while recentering the front axle.

Features & Benefits
  • Tubular long arms reduce caster change and create more controlled feeling on and off road
  • Heavy duty control arm brackets maintain proper suspension geometry
  • Front high strength progressive rate coil springs for a great ride on any terrain
  • Front track bar relocation bracket to re-position axle
  • Forged drop pitman arm to correct steering angles
  • Front sway bar correction to maintain handling performance
  • BDS NX2 gas or FOX performance series IFP gas shocks to improved ride and offroad performance
Recommended Tires & Wheels

(Trimming may be required)

  • 37 x 12.5 with 17 x 9 and 5 in. Backspace
Rear Lift Option
Block Kit
  • Blocks are made from cast iron for strength.
  • Tapered for correct pinion angle.
  • Steel pin and hole are offset to restore axle position.
Leaf Springs
  • Eliminates any need for a lift block.
  • Reduces axle wrap and creates a more controlled and stable feel.
  • Multi-leaf progressive design for a smooth ride.
  • Maintains factory payload weight ratings.
Axle Diameter

The Dodge Ram truck has 2 different rear axle diameters. Please measure your rear axle and select the appropriate rear kit for your vehicle.

Shock Option
NX2 Nitro Series
  • 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
  • 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

6-Inch Lift Kit - Long Arm for 2003-2007 Dodge Ram 2500/3500 4WD Diesel | SKU BDS645FS