Cognito 8" Elite Lift Kit with Fox 2.5 Elite Shocks | 2019-2025 Silverado/Sierra 1500

The Obsidian Vision

Eight inches of front lift and six inches of rear lift on a 2019–2025 Silverado or Sierra 1500 is the build that clears 37-inch tires, levels the truck front to rear, and delivers the ride quality that separates a properly engineered lift system from a parts-list assembly — and the Fox 2.5" Performance Elite Series shocks are the component that defines this kit's character. The Cognito 8-Inch Elite Lift Kit pairs the Fox 2.5 Elite's remote reservoir damping precision with the Cognito SM Series Ball Joint Upper Control Arm Kit's corrected geometry, a Deaver 6-inch progressive rear leaf pack, and stainless steel extended brake lines in a complete, no-guesswork system engineered and assembled in the USA. Before ordering, three requirements must be confirmed: 4WD trucks require a CV front driveline upgrade for operation above 20mph in 4WD; Denali models require bypassing the ARC Adaptive Ride Control system; and 2025 model year trucks require the addition of the Leaf Spring Top Plate Conversion kit (sold separately). With those prerequisites addressed, this is the T1 1500 build that the rest of the crowd is trying to replicate.

Concierge Fitment Guarantee

Every order is manually reviewed by our technicians to ensure 100% compatibility with your build before we ship.

Engineering Breakdown

• Lifts the front of the 2019–2025 Silverado/Sierra 1500 8 inches via the Cognito SM Series Ball Joint Upper Control Arm Kit, which corrects the ball joint angle at the elevated ride height, maintains adequate droop travel for superior ride quality, and provides the corrected CV joint geometry required to run 37-inch tires without accelerating ball joint, tie rod, and CV axle boot wear.
• Delivers elite-tier front damping through the Fox 2.5" Performance Elite Series remote reservoir shocks, which use a 2.5-inch shock body and remote reservoir to maintain consistent oil volume and temperature across the full 8-inch front lift travel range — preventing the fade and harshness that develop in non-reservoir shocks under sustained off-road and high-speed use at this lift height.
• Levels the truck front to rear with 6 inches of rear lift via the Deaver progressive-rate rear leaf pack, which replaces the factory rear spring with a higher-leaf-count, thinner-leaf progressive pack that delivers a more compliant initial rate that firms progressively under load — improving rear ride quality while providing the 6-inch lift increment required to match the front lift height and achieve a level stance.

The Cognito SM Series Ball Joint Upper Control Arms feature boxed sheet-metal construction, CNC robot-welded seams, and semi-gloss black powder coat, with ball joints, new crush sleeves, and polyurethane bushings included. The Fox 2.5" Performance Elite Series shocks are the top-tier Fox remote reservoir shock for this application — the 2.5-inch body diameter provides increased oil volume relative to the Fox 2.0 PSRR, and the remote reservoir maintains a constant oil supply to the piston, preventing cavitation and aeration that cause fade during sustained off-road or high-speed use at 8 inches of front lift. The Deaver 6-inch progressive rear leaf pack is a complete OEM spring replacement engineered for 6 inches of rear lift while maintaining the load capacity required for towing and payload at the elevated ride height. Stainless steel extended brake lines are included to safely accommodate the increased suspension travel at 8 inches of front lift. All Cognito components are engineered, manufactured, and assembled in the USA. At 656 lbs, this kit ships via LTL freight carrier with residential delivery included.

Audit Table

Verified Fitment (OFAS Standard)

✅ CONFIRMED — Chevrolet Silverado 1500:
2019–2025 Chevrolet Silverado 1500 Base, Custom, Custom Trail Boss, WT, RST, LT, LT Trail Boss, LTZ, High Country 2WD/4WD
2022–2025 Chevrolet Silverado 1500 ZR2 4WD

✅ CONFIRMED — GMC Sierra 1500:
2019–2025 GMC Sierra 1500 Base, SLE, SLT, Elevation, AT4, Denali 2WD/4WD
2022–2025 GMC Sierra 1500 AT4X, Denali Ultimate 2WD/4WD
2022–2025 GMC Sierra 1500 Pro 2WD/4WD

❌ REQUIREMENTS & CRITICAL NOTICES:
⚠️ CV FRONT DRIVELINE REQUIRED — 4WD TRUCKS: A CV front driveline upgrade is required for 4WD operation above 20mph. The stock front driveline cannot safely operate at the CV joint angles generated by 8 inches of front lift at speed in 4WD. Add a compatible CV front driveline upgrade to your order — contact the OFAS team to confirm the correct part for your specific truck.
⚠️ ARC ADAPTIVE RIDE CONTROL BYPASS REQUIRED — DENALI MODELS: 2019–2025 GMC Sierra 1500 Denali and Denali Ultimate models equipped with ARC (Adaptive Ride Control) require bypassing the ARC system before installation. Failure to bypass the ARC system will result in system fault codes and compromised suspension function after installation. Contact the OFAS team for ARC bypass guidance before ordering.
⚠️ 2025 MODEL YEAR REQUIREMENT: 2025 Silverado/Sierra 1500 models require the addition of the Leaf Spring Top Plate Conversion kit (sold separately) for proper rear leaf pack installation. Add this component to your order when purchasing for a 2025 model year truck.
Requires front alignment immediately post-installation — at 8 inches of front lift, caster and camber correction is critical before any driving.
Requires ADAS recalibration if equipped with forward collision alert, lane departure warning, adaptive cruise control, or Super Cruise.
Requires professional brake system inspection post-installation to verify stainless brake line routing, clearance, and connection integrity before driving.
Shipping Notice: At 656 lbs, this kit ships via LTL freight carrier. Residential delivery is included.

Installation & Technical Notes

Estimated Install Time: Professional installation recommended at 8 inches of front lift with a complete rear spring replacement — allow 6–8 hours with a 2-post lift, comprehensive hand tools, spring compressor, and torque wrench.
CV Driveline: Install the CV front driveline upgrade before operating in 4WD above 20mph. Contact the OFAS team to confirm the correct CV driveline for your specific truck before ordering.
ARC Bypass (Denali): Complete the ARC Adaptive Ride Control bypass procedure before installation on Denali and Denali Ultimate models. Do not install this kit on an ARC-equipped truck without completing the bypass first.
2025 Leaf Spring Top Plate: Add the Leaf Spring Top Plate Conversion kit to your order for 2025 model year trucks before scheduling installation.
Alignment Required: Yes — professional front alignment is mandatory immediately after installation. At 8 inches of front lift, caster and camber deviation from factory specification is significant and must be corrected before any driving.
ADAS Recalibration: Models equipped with Super Cruise, adaptive cruise, forward collision alert, or lane-keep assist require front camera and radar recalibration after installation.
Torque Specifications: Refer to Cognito's included instruction sheet for all UCA and shock mount hardware torque values — torque all fasteners with the suspension at ride height.
Shipping Notice: At 656 lbs, this kit ships via LTL freight carrier. Residential delivery is included. A delivery appointment will be scheduled by the carrier.

Wheel & Tire Fitment

Designed to Clear: 37-inch tires at 8 inches of front lift and 6 inches of rear lift on the 2019–2025 Silverado/Sierra 1500 platform.
Contact the OFAS team to verify specific wheel backspacing, offset, and inner fender clearance requirements for your exact cab, bed, and fender configuration before finalizing wheel and tire selection at 37 inches.

Our team is standing by to confirm your CV driveline selection, ARC bypass requirements (Denali), 2025 Leaf Spring Top Plate need, and 37-inch tire and wheel setup. Purchase with confidence; we review every build.