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6" Performance System w/ Front Dirt Logic SS 2.5 Coilovers & Rear Dirt Logic SS Shocks - 2007-14 GM C/K1500 SUV/SUT 2WD/4WD w/o AutoRide

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Included Shocks

System Features & Benefits

• Integrated Lower Control Arm Crossmembers
• Offset Ductile Iron Front Steering knuckles retain stock like turning radius with minimal increase of track width
• No disassembly of factory strut assembly required for installation
• Rack and Pinion is retained in stock position
• Full lift height for proper clearance of 35/1250R17 tires
• Rear system includes upper and lower tubular link arms and trac bar relocation bracket


This system qualifies for our 5/60 Powertrain Warranty. To find out more CLICK HERE


Kit# K1021DL

  • Use 35/1250R17 tires w/ 17x8 wheels w/ 5” BS w/ minor trimming
  • Use 325/65R18 tires w/ 18x9 wheels w/ 5” BS w/ minor trimming
  • Use 35/1250R20 tires w/ 20x9 wheels w/ 5” BS w/ minor trimming


Oty Part # Description
1 FTS21040BK Component Box 1
1 FTS21041BK Component Box 2
1 FTS21196 Front Dirt Logic 2.5 Coilovers
1 FTS21052BK Rear Coil Kit
2 FTS810502 Rear Dirt Logic 2.25 Non Resi



8. Will not fit all wheel drive models.
72. Some models may not be level after install. Order (FTS21064) 1" rear coil spacer.
132. Will not fit 2WD Suburban models.

Front Dirt Logic 2.5 Stainless Steel Coilovers

From our desert racing experience the Dirt Logic 2.5 has been developed for exceptional performance in a variety of Coilover applications. The Dirt Logic 2.5 will provide incredible dampening capacity for aggressive offroad driving.

  • - 2.50" OD Stainless Steel Body
  • - 2.25" OD Billet Aluminum Piston
  • - 7/8" NitroSteel® Black Piston Rod
  • - Adjustable Coilover Construction
  • - 5/8" Spherical Ball Mounting Ends

Rear Dirt Logic 2.25 Stainless Steel Non Resi

Dirt Logic 2.25’s are designed to replace factory shocks with a larger, more robust configuration. The 2.25 size is what separates it from other replacement take apart shocks for a superior ride, both on and off road. Shocks are pretuned for each Fabtech suspension, accounting for larger tires, providing the finest all around damping.

  • - 2.25" OD Stainless Steel Body
  • - 2.0" OD Billet Aluminum Piston
  • - 7/8" NitroSteel® Black Piston Rod
  • - Polyurethane Mounting Ends
  • - Optional 2.25" OD Aluminum Reservoir w/-6 Stainless Steel O-ring Hose
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Download PDF Instructions
FT21041i.pdf (4.0 MB)
FT21051i.pdf (2.2 MB)