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5.5" Performance System w/ Dirt Logic SS Shocks - 2000-05 Ford Excursion w/ 7.3L Diesel Engine 4WD

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Included Shocks

Our Performance systems offer more than just increased ride height. The progressive thin 10-leaf front spring pack rides on nylon glide pads for a superior ride. Front springs include military wrapped front eyes with 4 leaf clamps for exceptional strength. Rear lift is accomplished with a block & u-bolt kit and complete rear leaf springs, not shown.


Kit# K2027DL

  • Use 315/75R 16 tires w/ 16x10 wheels w/ 4 5/8” BS w/ minor trim
  • Use 325/65R 18 tires w/ 18x10 wheels w/ 4 1/2” BS w/ minor trimming


Oty Part # Description
1 FTS421-1 Component Box
2 FTS275D Front Leaf Spring
2 FTS281 Rear Leaf Spring
1 FTSBK1 Rear Block Kit
1 FTS351UBK U-bolt Kit
1 FTS85 Rear Bump Stop Kit
2 FTS810032 Front Dirt Logic 2.25 Non Resi
2 FTS810122 Rear Dirt Logic 2.25 Non Resi



31. For precision centering of axle under vehicle order trac bar FTS451. Will not fit 1999-00 models with trac bar bolt head size of 5/8.

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
FT421-1i.pdf (1.3 MB)