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Skyjacker 6-7In KT SPA ALUM 14 GMADX

  • Backed by real installs and tuning experience at FAST of West Chester
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You need taller tires for more ground clearance when you properly mixing work and play. Exacting engineered CNC machined ductile iron replacement steering knuckles for Models with OEM Aluminum or Stamped Steel Control Arms maintain proper steering geometry through the travel cycle. Precise CNC laser cut and precision formed in CNC press break, sturdy front and rear crossmembers provide a solid mounting point for the OEM lower control arms. Durable diff drop brackets and CNC machined 6061-T6 Aluminum front CV axle spacers reposition and correct front CV axles and driveshaft angles. A differential skid plate tie the two crossmembers together to create a rigid sub-frame and added protection for vital steering and driveline components. Retain your front GM OEM tuned performance struts by utilizing top and bottom strut spacers to elevate the stance. The bottom strut extension is the first component to add a higher ride height. The top mount 1-piece strut spacers have a specific ‘Pitch and Index' offset to preserve CV extension. Other key components: front brake line extension brackets, front ABS extension brackets, front sway bar drop brackets, rear extended length OEM sway bar links and a rear block u-bolt kit for a more level stance. Rear dampening amazingly enhanced with ADX 2.0 Adventure Series Remote Reservoir Aluminum Monotube Shocks. ADX 2.0 offer unmatched shock damping and have specific valving and stroke for this application. ADX 2.0 has an innovative off-road race-inspired full-displaced valving system. The external remote reservoir separates the nitrogen gas from the oil with an Internal Floating Piston (IFP). The majority of the reservoir contains pressurized nitrogen gas. The IFP prevents the gas and oil from mixing or foaming (cavitation). Nitrogen charged with IFP Technology = Quickest Shock Reaction Time Ever. From higher speeds to a slow advance, ADX 2.0 works.

Installation Instructions
  • Specifically Engineered To Maintain Proper Suspension Geometry
  • 1-Piece Top Strut Spacers Have A Specific Pitch Index Offset
  • ADX 2.0 Nitrogen ChargedInternal Floating Piston Technology
  • Delivers A Quicker Response To Terrain And Improved Handling
  • Rear Block And U-bolt Kit Raises Rear To A More Level Stance
  • Built-In Camber Correction And Optimized Ball Joint Angles
  • IFP Technology Provides Quickest Shock Reaction Time Ever
  • Struts Remain Assembled/No Coil Spring Compressor Needed
  • ADX 2.0 Has Race-inspired Full-displaced Valving System
  • ADX 2.0 Reacts Quicker To Improve Control And Stability
  • Precise CNC Machined Ductile Iron Steering Knuckles
  • 1-Piece Bottom Strut Spacers Add Higher Ride Height

This Part Fits:

Year Make Model Submodel
2016-2018 Chevrolet Silverado 1500 Custom
2014-2018 Chevrolet Silverado 1500 High Country
2015-2018 Chevrolet Silverado 1500 LS
2014-2018 Chevrolet Silverado 1500 LT
2014-2018 Chevrolet Silverado 1500 LTZ
2015-2018 Chevrolet Silverado 1500 SSV
2014-2018 Chevrolet Silverado 1500 WT
2014-2018 GMC Sierra 1500 Base
2014-2018 GMC Sierra 1500 Denali
2014-2018 GMC Sierra 1500 SLE
2014-2018 GMC Sierra 1500 SLT

  • Earn FAST points on this part!
  • Backed by real-world installs
  • FAST WC Team Approved

Why Drivers Choose FAST of West Chester

  • I can't recommend this place enough. Being able to trust a shop in the performance world is big. The 2hr drive to get there, is worth knowing the job will be done right. Very happy to have found this shop, to
    support my builds going forward.


    Donald Wojnar
  • I recently had the pleasure of working with FAST of West Chester for some performance upgrades on my 2022 WRX, and the experience was nothing short of exceptional. I opted for a Borla S-Type exhaust and Cygnus Coilovers, and the team at FAST nailed the installation, fitment, and setup to a T.


    Adam Cranston
  • The team at FAST are excellence in every way. First, I consulted with Dave on mods for my HPDE track car. He listened and advised me on the best parts & mods to achieve my goals. He was patient & gave me space to research the options presented & worked with me through several changes before we built. Second, the build execution was flawless, proper heat shielding, bracing and poly everywhere. All components worked as advertised.


    Bryce Budd
  • This place has been my go to shop for all things Subaru. From simple service to performance parts and tuning, they have been top notch.


    William Brunell
  • Excellent shop. They installed a Cobb Stage 2 DP and Whiteline Sway bars and end links on my 2013 WRX. The work was done right and clean. The estimate was accurate. They were very knowledgeable, friendly and gave me the straight scoop on exactly what I was getting for the money
    and what I needed to get where I want to be with it. I'd recommend them
    to any car enthusiast.


    Devin Greco
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Does it come with a warranty?

Most products we carry include a manufacturer warranty. Since we work with top performance brands, warranty coverage can vary by product. If you have questions about a specific item, reach out — we’re happy to help.

Do you offer installation help or advice?

Yes — we don’t just sell parts, we install and tune them too. FAST of West Chester is a real performance shop, and we’ve worked hands-on with many of the products we carry. If you have questions about fitment, installs, or building your setup, our team can point you in the right direction.

How fast is shipping?

Many of our products ship the same day or next business day, depending on availability. We work hard to get parts out fast so you can get your build moving without delays.

What’s your return policy?

Returns for exchange or refund are accepted within 30 days of receiving your order. Items must be in new, unused condition and in original packaging. If you have any questions, our team will help make the process easy.

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