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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...

50 products found in Hardcore Upgrades

J-Link Adjustable Control Arms | Front Upper | Wrangler JK
  • $325.95
Brand: JKS
SKU: JKS1633

Coilover Mounting Kit | Front | Wrangler JK
  • $573.95
Brand: JKS
SKU: JKS2510

FOX 2.5 Front Coilover Shocks w/ DSC | Factory Race | Wrangler JK
  • $1,587.96
Brand: FOX
SKU: FOX88406178

Rear Coil Spring Retainer | Wrangler JK
  • $37.95
Brand: JKS
SKU: JKS1600

Coilover Mounting Kit | Rear | Wrangler JK
  • $567.95
Brand: JKS
SKU: JKS2519

J-Link Adjustable Control Arms | Rear Upper | Wrangler JK & JL
  • $399.95
Brand: JKS
SKU: JKS1639

Adjustable Control Arms | Rear Lower | Wrangler JL
  • $371.95
Brand: JKS
SKU: JKS1661

J-Link Adjustable Control Arms | Front Lower | Wrangler JK
  • $399.95
Brand: JKS
SKU: JKS1631

FOX 2.5 Rear Coilover Shocks w/ DSC | Factory Race | Wrangler JK
  • $1,587.96
Brand: FOX
SKU: FOX88406177

Front Adjustable Coil Spacer with Hydraulic Bump Stop | ACOS Pro | Wrangler JL and Gladiator JT
  • $901.95
Brand: JKS
SKU: JKS2711

Rear Adjustable Coil Spacer | ACOS | Wrangler TJ & LJ
  • $276.95
Brand: JKS
SKU: JKS2550

J-Link Adjustable Control Arms | Rear Lower | Wrangler JK/JL
  • $399.95
Brand: JKS
SKU: JKS1636

FOX 2.5 Reservoir Rear Shocks Adjustable | Performance Elite | 2-3" Lift | Wrangler JL
  • $1,599.95
Brand: FOX
SKU: FOX88326054

Rear Adjustable Coil Spacer| ACOS | Wrangler JK
  • $397.95
Brand: JKS
SKU: JKS2570

J-Link Adjustable Control Arms | Front Upper | Wrangler JL & Gladiator JT
  • $349.95
Brand: JKS
SKU: JKS1634

1.5" J-Spec Lift Kit | FOX 2.5 IFP Shocks | Wrangler JL
  • $1,965.85
Brand: JKS
SKU: JSPEC177PS