Product Filter

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

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

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 JL and Gladiator JT
  • $371.95
Brand: JKS
SKU: JKS1625

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

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

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

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

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

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

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

Adjustable Coil Spacer with Bump Stop | ACOS Pro | Wrangler TJ & LJ, Cherokee XJ, Comanche MJ, Grand Cherokee ZJ
  • $938.95
Brand: JKS
SKU: JKS2700

Front Adjustable Coil Spacer | ACOS | Wrangler JK
  • $297.95
Brand: JKS
SKU: JKS2210

Adjustable Control Arms | Rear Upper | Wrangler JL
  • $334.95
Brand: JKS
SKU: JKS1666