BDS1817H | BDS Suspension 4.5 Inch Lift Kit For Chevrolet Silverado / GMC Sierra 2500HD / 3500HD SRW 4WD | Narrow Track Knuckle | NX2 Nitro Series Shocks

• 33 x 12.5 with 17 x 9 and 5.5 in. Backspace
• 33 x 12.5 with 18 x 9 and 5.5 in. Backspace
• 33 x 12.5 with 20 x 9 and 5.75 in. Backspace

High Clearance Crossmembers

BDS maximizes ground clearance with their heavy duty 1/4-inch thick laser cut perfect fit crossmembers. Paired with a front skid plate system that bolts together to create a rigid subframe while adding extra protection.

Heavy Duty Steering Knuckles

BDS corrects steering geometry at the new taller ride height using a pair of high-strength, CNC machined ductile cast iron steering knuckle design to work with factory tie rod ends to maintain steering angles for proper function and ESC compatibility.

Track Width Option

This system is available with two different knuckle designs. The standard knuckle widens the track width, but does not affect the turning radius. The narrow track knuckle reduces the total track width change by about 1.5" overall but does increase the turning radius slightly.

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

Important Notes

1. Torsion Bar tool required to load/unload the torsion bars.
2. Some welding is 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 5-3/4" backspacing recommended to reduce trimming.
6. Gas models require exhaust modification.
7. Narrow track knuckle will slightly increase the turning radius.
8. For tail high stance use #119157 add-a-leaf with the block kit.
9. Not Recommended for Suburban / Yukon models with AutoTrac Transfer Case.
10. Does NOT work with rear Autoride equipped SUV's
11. Does not fit dual rear wheel trucks.

Installation

Specification