Fits: 2011 thru 2019 Chevy Silverado/GMC Sierra 2500HD/3500HD LML/L5P Duramax Diesel 

Like many of our other IFS suspension systems for the Chevy's, this 4.5" system is packed with the same features and benefits of the current 6.5" kit but designed for a lower lift height for those looking for a more modest setup. Like the 6.5" system, the 4.5" includes one piece cross members, differential drop brackets, ductile cast iron steering knuckles and bolt-on non torsion bar drop brackets that keep the torsion bars in the factory location at the frame. Also included are stainless steel front brake lines, extended sway bar links and differential skid plates. The front replacement steel splash guard with the BDS logo finishes out the front of the clean, high clearance design. In the rear, the system comes with a 2" block and u-bolt setup that levels the vehicle perfectly. For those looking for a little more height in the rear, the existing 3" rear block kits can be substituted in.

Features: 

• Benefit from a high clearance design without torsion bar drop for optimal ground clearance.
• Ensure ESC system compliance with sturdy steering knuckles.
• Enhanced off-road protection thanks to the heavy-duty skid plate system.
• Secure front axle and optimize CV angles with multipoint differential relocation brackets.
• Included Factory Protection Plus drivetrain warranty offers peace of mind.
• Select between NX2 or FOX 2.0 gas shocks for enhanced performance options.

Includes: 

• NX2 Nitro or FOX 2.0 performance shocks 
• Torsion bar relocation brackets
• Thick steel crossmembers 
• Multipiece differential relocation brackets 
• Heavy Duty skit plates
• CNC-machined ductile steering knuckles 
• Sway bar links 
• Bump stop extensions 
• Stainless Steel brake lines 
• CV Spacers 
• U-Bolt flip kit 
• Lift blocks
• Necessary hardware

Notes:

• Torsion Bar Tool required to load and unload the torsion bars.
• Requires frame bracket and differential modification
• Stock 17" & 18" wheels cannot be reinstalled.
• Stock 20" x 8.5" wheels with 6" backspacing or less will fit with a max tire size of 35 x 12.50
• Factory dually wheels cannot be reinstalled.
• Models with two piece rear driveshaft may require part# 121612.
• Top mounted rear overload spring equipped models require a different kit than non-overload equipped models. Be sure to select the correct option for your truck.
• Depending on the specific wheel and tire combination trimming may be required for 35x12.50s
• All BDS Lift kits are special order, Please allow 20-25+ business days before kits ship
• If shock boots are purchased, you will get 4 shock boots for the front and rear shocks
• Free Standard freight is only to the lower 48  states.  International, HI, and AK, orders will require an additional shipping charge before order is shipped.