• BDS 6.5" Coil-Over Lift Kit

BDS 6.5" Coil-Over Lift Kit for Chevy/GMC 01-10 2500/3500 Pickup 4WD, 01-06 Avalanche 2500 4WD, & 01-10 Suburban/Yukon XL 3/4 Ton 4WD

  • $4,724.07

BDS raises the bar with game changing 6.5" coilover conversion systems for the 2001-2010 HD trucks and SUVs.
At the heart of the systems you'll find BDS's tried and true high clearance IFS technology designed to offer more ground clearance while improving the suspension, steering, and driveline geometry. This paired with FOX 2.5 factory series coilovers offers vastly superior damping performance to soak up the harshest terrains offroad while offering comfort on your daily commute. The coilovers are pretuned and ready to install right out of the box featuring a dual speed compression (DSC) adjuster on the reservoir to allow for easy tuning of the high-speed and low-speed compression damping by hand, without the need for special tools. To mount the coilovers BDS supplies a bolt-on bracket that installs on the frame in the shock mount location along with a weld-in support gusset is used to reinforce the upper mount.
In addition to replacing the factory torsion bars, the upper control arms (UCA) are upgraded to improved strength, travel, and accommodate the new coilovers. The uppers are new performance series upper control arms designed specifically for this system to integrate with the 2.5 coilovers. The arms are fabricated from large 1.5" OD x .120-wall tubing, fully welded and gusseted for the highest quality, strength and durability. The factory cast steel lower control arms are retained with the addition of a robust lower coilover mounting bracket. Along with the coilover conversion, these 6.5" coilover systems include a pair of one-piece laser cut high clearance crossmembers, CNC machined ductile iron steering knuckles to correct steering angles, heavy duty front skid plate and differential skid plate to increase protection, multipoint differential relocation brackets to secure differential and correct CV axle angles, CV spacers, and longer sway bar links. In the rear, your options are a 5" rear block and u-bolt kit or replacement GlideRide rear leaf springs with built-in overload leaf. Either option will level the stance and are paired with FOX 2.0 performance series IFP shocks to pair with the front coilovers for impressive performance wherever your the adventures lead you.

Note: Components displayed in images may change based upon selections.

1. Torsion Bar tool required to load/unload the torsion bars
2. Some welding required
3. Requires frame bracket modification and differential mount modification
4. Traction bars will not fit standard cab/short box models and are designed to work on vehicles with 4" to 8" of lift 5. 20" wheels with 5" to 5.75" backspacing recommended to reduce trimming
5. Gas models require exhaust modification
6. Not Recommended for Suburban / Yukon models with AutoTrac Transfer Case
7. Does NOT work with rear Autoride equipped SUV's
8. For coilover conversion kit, see instructions for fitment on gas models

Lift Height
Front (Base Kit:) 6.5" in High Clearance IFS
Rear (Base Kit:) 5 in Block Kit

Tire and Wheel Combinations
2001-2007 Classic Body Style
- 35" x 12.50" w/16 x 8 and 4-1/2" back spacing
- 35" x 12.50" w/17 or 18 x 9 and 5.5" back spacing
- 37" x 12.50" w/20 x 9 and 5.75" back spacing

2007-2010 New Body Style
- 35" x 12.50" w/16 x 8 and 4-1/2" back spacing
- 35" x 12.50" w/17 or 18 x 9 and 5.5" back spacing
- 35" x 12.50" w/20 x 9 and 5.75" back spacing
*Trimming may be required*

Make Model Type Year Range
Chevy / GMC 1 Ton Pickup 4WD 2001-2010
Chevy / GMC 3/4 Ton Pickup 4WD 2500 HD 2001-2010
Chevy / GMC 3/4 Ton Pickup 4WD 2500 NON-HD 2001-2006
Chevy / GMC Avalanche 2500 4WD 2001-2006
Chevy / GMC Suburban 3/4 Ton 4WD 2001-2010
Chevy / GMC Yukon XL 3/4 Ton 4WD 2001-2010

Difficulty Level (1 easy – 5 complicated): 4
Estimated Installation Time (hours): 8-10

PDF (click here)

Qty Part# Description
(1) 011517 01-06 GM 3/4 Ton Rear 5" (flat)
(1) 021441 01-10 HD Coilover System Box Kit (1of2)
(1) 021442 01-10 HD Coilover System Box Kit (2of2)
(1) 021632 Standard HD Knuckle Kit
(1) 121252 01-10 HD UCA Kit
(1) 121624 HD Front Skid Plate
(1) 121654 01-10 HD Coilover Mounting Kit
(1) 88406188 Kit: BDS 01-10 GM 2500/3500 HD Front Coi
(2) 98224761 Fox 2.0 Shock 33.85 x 20.75 x 2- EB1/EB1

*Subject to change based upon selections

No Fine Print Warranty
BDS stands behind its products and that’s evident by their No Fine Print Warranty. This no-BS warranty protects the original purchaser against breakage, bending, sagging, or any other usage failure. This “no fine print” lifetime replacement warranty extends to cover all BDS hard parts as well as bushings. Exclusions would be product finish and wearable items such as shock/stabilizer cylinders, tie rod ends and ball joints that would fall under the separate Limited Lifetime Warranty policy. Beginning February 1, 2020 all new kit purchases include the No Fine Print Warranty on bushings.

Limited Lifetime Warranty (for wearable items)
Wearable items include shock/steering stabilizer cylinders, ball joints and tie rod ends. BDS Suspension Co. warrants to the original retail purchaser that its these wearable parts are free from defects in material and workmanship for so long as they own the vehicle. Excluded from this warranty are the finish of the product. Defects in material and workmanship do not include such things as dented cylinders or bent rods caused by obvious side impact, rust or corrosion. A shock absorber is a wear item and over time will experience diminished damping resistance due to normal component wear. This is not a defect in material or workmanship and is therefore not warrantable.