The BDS 4.5" lift kit for the 2001-2010 Chevy Silverado and GMC Sierra 2500 HD 4WD improves stance and clears up to 33" tires. The high-clearance front end uses torsion bar relocation brackets, 1/4" thick high-arched steel crossmembers, multipiece differential relocation brackets, HD skid plates, and CNC-machined ductile iron steering knuckles with sway bar drops, bump stop extensions, brake line brackets, and CV spacers. The rear is available with a replacement lift block or full Glide-Ride leaf springs, new u-bolts, brake line brackets, and precision-tuned NX2 Nitro or FOX 2.0 Performance Series shocks. The system offers two knuckle designs: the standard knuckle widens track width without affecting turning radius, while the narrow track knuckle reduces total track width change by about 1.5" but slightly increases the turning radius.

Features

• Robust steering knuckles maintain ESC system compliance
• HD skid plate system improved offroad protection
• Multipoint differential relocation brackets to secure the front axle and improve CV angles
• Factory Protection Plus drivetrain warranty included
• Choice of NX2 or FOX 2.0 gas shocks for improved performance
• 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

Specs

• Front Lift Method: Cross-Member
• Rear Lift Method: Block
• Shocks Included: Yes
• Front Lift Height: 4.5 inch
• Rear Lift Height: 3 inch

Recommended Tire & Wheel Fitment

• Tire Size: 33x12.5
• Wheel Diameter: 18x9, 20x9
• Back Spacing: 5.5/5.75

Notes

• Torsion Bar tool required to load/unload the torsion bars.
• Some welding is required.
• Requires frame bracket modification and differential mount modification.
• Traction bars will not fit standard cab/short box models and are designed to work on vehicles with 4 inch to 8 inch of lift.
• 20 inch wheels with 5 inch to 5-3/4 inch backspacing recommended to reduce trimming.
• Gas models require exhaust modification.
• Narrow track knuckle will slightly increase the turning radius.
• For tail high stance use #119157 add-a-leaf with the block kit.
• Not Recommended for Suburban / Yukon models with AutoTrac Transfer Case.
• Does NOT work with rear Autoride equipped SUV's.
• Does not fit dual rear wheel trucks.

Includes

• BDS011319, 01-10 GM HD 3in Rear Kit (UPC 658848611768)
• BDS021451, 01-10 GM HD 4.5in Box Kit (2of3) (UPC 658848614677)
• BDS021452, 01-10 GM HD 4.5in Box Kit (3of3) (UPC 658848614684)
• BDS021632, HD Knuckle Kit (UPC 658848614882)
• BDS85605, Shock - 22.20 x 13.35 x 2 - S50/EB1 (UPC 711745609310)
• BDS85759, Shock- 29.80 x 17.60 x 2-3/8 - EB1/EB1 (UPC 711745609686)