2.5" 2025-2026 GMC Sierra 1500 AT4 4WD (w/Gas Engine) Fox Performance Elite Coilover Lift Kit by BDS Suspension

The BDS Suspension BDS1855PES/PSS 2.5-inch premium coil-over suspension lift kit for the GMC Sierra 1500 AT4 truck with gas engine allows for the fitment of up to 35-inch diameter tires, providing an awesome off-road look. Featuring Fox 2.5 Performance Elite remote reservoir coil-overs. These Fox 2.5 Coil-overs will enhance ride quality and handling in both on-road and off-road conditions.

This lift kit also features 1/4-inch-thick steel, laser-cut, high-clearance crossmembers designed to provide maximum clearance and a rock-solid mounting point for the factory lower control arms. Three-piece heavy-duty front skid plates connect the cross members, protecting steering and driveline components. Correct steering geometry is maintained using new ductile iron steering knuckles that keep the ESC system compatibility, along with tubular upper control arms. CV axle angles are minimized using a multi-point front differential relocation system. The rear end is lifted using 3-inch-tall axle blocks (replacing 2.5-inch factor blocks) with extended U-bolts.

Fox 2.5 Performance Elite Coil-overs with DSC Remote Reservoirs - These top-of-the-line adjustable coil-overs feature a 2.5-inch diameter CNC-machined 6061-T6 hard-anodized aluminum body that resists rust and allows for excellent heat dispersion. The remote reservoir increases oil capacity and houses the DSC (dual speed compression) adjuster knob. This allows you to easily adjust the ride softness or firmness of your coil-overs to match the current terrain and vehicle load by changing the high-speed and low-speed compression settings with the turn of a dial.

Choose your rear shocks, either FOX 2.0 Performance Series or 2.5 Performance Elite! The FOX 2.0 Performance Series rear shocks are built with a 2-inch impact extruded aluminum body, internal floating piston (IFP) monotube design, CNC machined 6061-T6 aluminum ends, and a large 5/8-inch chrome-plated alloy steel shaft. Or upgrade to the Fox 2.5 Performance Elite, which sports a 2.5-inch diameter aluminum body with a massive 7/8-inch chrome-plate shaft and DSC (Dual Speed Compression) adjuster that allows you to fine-tune your ride from smooth to firm.

Features and Benefits:

• 2.5-inch suspension lift kit designed for GMC Sierra 1500 AT4 models
• 3-inch rear block replaces factory 2.5-inch block
• Provides clearance for up to 35" tires for aggressive stance and improved capability
• Includes FOX 2.5 Performance Elite coil-over shocks with remote reservoirs and DSC adjusters
• Tubular upper control arms with rubber bushings and indexed ball joints
• Offers 10 low-speed and 12 high-speed compression settings for versatile tuning
• High-clearance front crossmembers and heavy-duty skid plates maximize ground clearance and protection
• CNC-machined ductile iron steering knuckles and tie rod ends maintain correct steering geometry and ESC compatibility
• Heavy-duty tubular upper control arms with corrected ball joint angles and greaseable joints
• Allows for use of 35" tires
• Durable black powder coat finish with billet aluminum dust caps
• Rear lift blocks retain factory ride quality and load capacity
• Includes FOX 2.0 Performance Series rear shocks for consistent damping and comfort
• Proudly made in the USA, using only premium quality components
• No Fine Print Lifetime Warranty

Rear Shock Options

• FOX 2.0 Performance Series: 2" impact extruded aluminum body and IFP monotube design, 5/8" chrome-plated alloy steel shaft, Race-developed high-flow piston design with application-specific valving
• FOX 2.5 Performance Elite: 2.5" impact extruded aluminum body, External Reservoir, 7/8-inch diameter piston rod, DSC - Dual Speed Compression Adjuster to fine-tune ride quality

Tire and Wheel Combinations:

• 33 inch x 12.5 inch w/ 17 x 9 and 4.5 inch back spacing
• 33 inch x 12.5 inch w/ 20 x 9 and 5 inch back spacing
• 35 inch x 12.5 inch w/ 20 x 9 and 6.25 inch back spacing

Premium Quality, Lifetime Warranty and Protection

BDS Suspension manufactures only premium-quality suspension products. All are backed by a "No Fine Print" limited lifetime warranty. Guaranteeing all products to be free from defects in material and workmanship to the original retail purchaser. If you break it, they replace it...period.