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Fabtech

Fabtech 19-20 GM C/K1500 P/U w/Trail Boss/At4 Pkg 4in Perf Sys w/Dl 2.5 & 2.25

$4,339.20 $3,788.11 Save $551.09

SKU: F001 K1140DL

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Fabtech 4" Performance System is designed to provide increased ground clearance and improved off-road performance for Chevrolet and GMC 1500 trucks with Trail Boss or AT4 packages. This kit includes Dirt Logic 2.5 Coilovers for the front and Dirt Logic 2.25 Shocks for the rear, offering superior dampening and a comfortable ride both on and off-road. The system is engineered to maintain proper alignment and handling characteristics.
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Part #: K1140DL

The Chevy Trail Boss and GMC AT4 both have a factory 2 in. lift compared to other GM 1500 trucks of the same year model. Fabtech's suspension system for these two trucks provide a 4 in. lift height on top of the factory 2 in. lift for clearance of 35 in. tall tires. Once a Trail Boss or AT4 is lifted with a Fabtech 4 in. system, the truck will sit at the same height as a 1500 with a 6 in. suspension and 35 in. tires. The near stock track width keeps the tires under the fenders for a clean appearance. Fabtech's proprietary steering knuckle geometry provides excellent lock to lock turning radius to maneuver in tight spots. Heavy duty 1/4 in. thick steel crossmembers feature OE style alignment cam pins that utilize the factory cams for easy adjustment. Triple front diff mounts reposition the differential for vibration free operation at high speed. The stainless steel Dirt Logic 2.5 Coilovers replace the Trail Boss or AT4 coilover with an outstanding ride quality both on and offroad. They are designed for aggressive offroad use yet have a supple on road feel. Rear Dirt Logic 2.25 shocks aid in damping the vehicle for a balanced ride. Rear lift is accomplished by removing the factory 2 in. block and replacing it with a 5 in. block and u-bolt system. Fabtech has addressed all aspects of the Trail Boss suspension for full suspension travel with lock to lock steering without over cycling. Comes with a free 5 year 60,000 mile Powertrain Warranty.

Features:

  • Everything You Will Need To Lift Your Vehicle
  • No Driveshaft Change Required For Auto Trac
  • Increased Caster For More Control
  • Retains Factory Steering Centerlink
  • Retains Factory Upper Control Arms
  • Quick No Weld Installation
  • Allows Use Of Stock Tires And Wheels

Performance Lift System w/Shocks | 4 in. Lift | w/Front Dirt Logic 2.5 Coilover | Rear Dirt Logic 2.25 Shocks

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Vehicle Symptoms
  • Tires rubbing on fender liners at full turn
  • Rear suspension sagging when towing
  • Harsh ride over bumps on highway
  • Front end diving under hard braking
  • Poor ground clearance for off-road trails
Relevant Conversations
  • Fabtech 4 inch lift vs BDS for 2020 Silverado
  • How to lift a 2021 Trail Boss with 35s
  • Dirt Logic 2.5 coilovers ride quality review
  • Best suspension lift for GMC AT4 2022
  • Will 35 inch tires fit with 4 inch lift on 1500
  • Fabtech K1140DL install time and difficulty
  • Lift kit for 2019 Silverado that retains factory UCA
  • 4 inch lift for towing stability and load leveling
  • Fabtech vs ReadyLift for 2023 Sierra 1500
  • Symptoms of needing a suspension lift on truck

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandFabtech
Part NumberF001 K1140DL

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