2011-2019 GM HD 4.5" Lift Kit with NX2 Nitro Shocks (BDS721H)

This BDS 4.5" lift kit improves the stance and capability of your 2011-2019 Chevy Silverado / GMC Sierra 2500 HD 4WD, with clearance for up to 35" tires. BDS uses a No Torsion Bar Drop System, mounting the torsion bars to the top of the lower a-arm to maximize ground clearance. Up front it runs torsion bar relocation brackets, high-arched 1/4" steel crossmembers, multipiece differential relocation brackets, HD skid plates and CNC-machined ductile iron steering knuckles. The rear uses replacement lift blocks and a u-bolt flip kit for max clearance. This kit ships with NX2 Nitro shocks: nitrogen-charged twin-tube design with 10-stage velocity-sensitive valving.

Features

• High clearance design with no torsion bar drop maximizes ground clearance
• Robust steering knuckles maintain ESC system compliance
• HD skid plate system for improved offroad protection
• Multipoint differential relocation brackets secure the front axle and improve CV angles
• Factory Protection Plus drivetrain warranty included
• NX2 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: 2 inch

Recommended Tire & Wheel Fitment

• Tire Size: 35x12.5
• Wheel Diameter: 18x9, 20x9
• Back Spacing: 4.625/6

Notes

• Torsion bar tool required to load/unload the torsion bars.
• Stock 17 inch & 18 inch wheels cannot be reinstalled.
• Stock 20 inch wheels cannot be reinstalled on 2015-2019 models.
• Factory dually wheels cannot be reinstalled.
• Models with two-piece rear driveshaft may require #121612.
• Top-mounted rear overload spring-equipped models require a different kit than non-overload models. Determine if your truck was built with or without top-mounted overload springs and select the correct option.
• Depending on the wheel and tire combination, trimming may be required for 35x12.50s.

Includes

• BDS011217, 2011-2024 Chevrolet Silverado/GMC Sierra 2500/3500 HD 2 inch Rear Block w/ Overload (UPC 658848611706)
• BDS021454, 11-15 GM HD 4.5in Torsion Bar System (UPC 658848614691)
• BDS021650, 11 GM HD 4.5-6.5in System (1of4) (UPC 658848614950)
• BDS021651, 11 GM HD 4.5-6.5in System (2of4) (UPC 658848614967)
• BDS021652, 11 GM HD 4.5-6.5in System (3of4) (UPC 658848614974)
• BDS021653, 11 GM HD 4.5-6.5in System (4of4) (UPC 658848614981)
• BDS121650, 2001-2019 GM HD Front Skid Plate Box Kit (UPC 658848619207)
• BDS85613, Shock- 22.20 x 13.35 x 2 - S50/EB1 (UPC 711745609372)
• BDS85758, Shock- 27.90 x 16.55 x 2-3/8 - EB1/EB1 (UPC 711745609679)