BDS 4.5 Inch Lift Kit | 2007-2013 Chevy Silverado / GMC Sierra 1500 4WD | Leaf Springs w/ NX2 Nitro Series Shocks

Rear lift is achieved with full Glide-Ride replacement leaf springs — a multi-leaf progressive design that mounts between the factory axle and leaf springs to deliver correct pinion angles, reduce axle wrap, and maintain factory payload weight ratings. Paired with NX2 Nitro Series rear shocks featuring a nitrogen-charged twin-tube design, 10-stage velocity-sensitive valving, 1-3/8-inch high-flow piston, dual-welded ends for increased strength, and self-lubricating seals with a silver powder coat finish.

Overview

This BDS 4.5-inch lift kit is engineered for 2007–2013 Chevy Silverado and GMC Sierra 1500 4WD trucks. The kit provides clearance for up to 33-inch tires while improving stance, ground clearance, and off-road capability. It takes advantage of BDS's high-clearance design to correct suspension and steering geometry at the new ride height, preserving on-road handling characteristics.

Up front, the kit uses full-length replacement strut shocks, high-arched 1/4-inch thick steel crossmembers, a multi-piece differential relocation bracket, heavy-duty skid plates, CNC-machined ductile iron steering knuckles, sway bar drops, bump stop extensions, brake line brackets, CV spacers, and all required hardware. In the rear, customers can choose between a lift block option or full Glide-Ride leaf spring replacement, along with new U-bolts, brake line brackets, and a choice of NX2 Nitro or FOX 2.0 Performance Series shocks.

Features

• High-clearance crossmember design maximizes ground clearance using heavy-duty 1/4-inch thick laser-cut steel
• Front skid plate system bolts together to create a rigid subframe with added off-road protection
• CNC-machined ductile cast iron steering knuckles correct steering geometry at the lifted ride height and maintain ESC system compliance
• Multi-piece differential relocation brackets secure the front axle and improve CV angles
• Rear lift available as a block kit (retains ride quality and load capacity) or full Glide-Ride leaf spring replacement
• Rear shock options include FOX 2.0 Performance Series IFP gas shocks or NX2 Nitro Series shocks
• Factory Protection Plus drivetrain warranty included
• Sway bar drops, bump stop extensions, brake line brackets, CV spacers, and all required hardware included

Installation

• Estimated Time: 8 hours
• Difficulty: Difficult
• Required Tools: Cut-off wheel or equivalent, reciprocating saw, welding equipment

Important Notes

• This system will not fit 2007 Classic models
• Installation of rear leaf springs requires removal of the fuel tank
• Requires frame bracket modification
• 20-inch wheels with 5-inch to 5-3/4-inch backspacing recommended to reduce trimming
• Traction bars will not fit regular cab short box models
• Add part #121651 Auxiliary Differential Support Bracket for AWD models; may also require front driveline modification
• Will not fit two-mode hybrid models with electronic power steering
• Stock 20-inch wheels can be re-installed only with factory tire size
• Factory 17-inch and 18-inch wheels cannot be re-installed