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Dominate gnarly obstacles and conquer extreme terrain with hardcore suspension from JKS. Engineered systems and upgrades deliver maximum articulation, durability, adjustability, and clearance.

The range of products includes turn-key suspension systems, custom-tuned JSPEC and FOX shocks and FOX coil-overs, HD track bars and control arms, sway bar disconnects, coil-over mounting kits, and a lot more. JKS engineers its "Go Anywhere" attitude into components that help you push your adventures to extreme levels. 

Here are a few categories to get you started...

71 products found in Hardcore Upgrades

Adjustable Control Arms | Front Upper | Wrangler TJ / LJ Cherokee XJ / Comanche MJ / Grand Cherokee ZJ and WJ
  • $265.95
Brand: JKS
SKU: JKS1652

Adjustable Control Arms | Front Lower | Wrangler JL and Gladiator JT
  • $371.95
Brand: JKS
SKU: JKS1625

Front Adjustable Coil Spacer | ACOS | Wrangler TJ & LJ, Cherokee XJ, Comanche MJ, Grand Cherokee ZJ
  • $276.95
Brand: JKS
SKU: JKS2200

Adjustable Control Arms | Front Lower | Wrangler JK
  • $371.95
Brand: JKS
SKU: JKS1610

Adjustable Control Arms | Rear Upper | Wrangler JK
  • $318.95
Brand: JKS
SKU: JKS1665

Adjustable Control Arms | Lower | Wrangler TJ & LJ, Cherokee XJ
  • $371.95
Brand: JKS
SKU: JKS1650

Front Adjustable Coil Spacer with Bump Stop | ACOS | Wrangler JL and Gladiator JT
  • $297.95
Brand: JKS
SKU: JKS2211

Adjustable Control Arms | Front Upper | Wrangler JK
  • $318.95
Brand: JKS
SKU: JKS1615

FOX 2.5 IFP Shock Package - Set of 4 | Performance Series | 2-3.5" Lift | Jeep Wrangler JL
  • $999.95
Brand: FOX
SKU: FOX88624155

Adjustable Control Arms | Rear Lower | Wrangler JK
  • $371.95
Brand: JKS
SKU: JKS1660

HD Leaf Spring Shackle | Cherokee XJ, Comanche MJ, Wagoneer SJ
  • $117.95
Brand: JKS
SKU: JKSOGS651

Adjustable Control Arms | Rear Upper | Wrangler TJ, LJ Grand Cherokee ZJ
  • $318.95
Brand: JKS
SKU: JKS1655

Adjustable Control Arms | Front Upper | Wrangler JL and Gladiator JT
  • $302.95
Brand: JKS
SKU: JKS1616

FOX 2.5 IFP Shock Package - Set of 4 | Performance Series | 2-3.5" Lift | Jeep Gladiator JT
  • $999.95
Brand: FOX
SKU: FOX88624157

3.5" Lift Kit | J-Krawl | Gladiator JT
  • From $3,205.45
Brand: JKS
SKU: JSPEC171PES

Rear Adjustable Coil Spacer| ACOS | Wrangler JL
  • $397.95
Brand: JKS
SKU: JKS2571