Hardcore Upgrades
Hardcore Upgrades

Hardcore Upgrades

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...

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  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_2700_jeep_acos_pro_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_2700_jeep_acos_pro_rotation_1.
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Coil Spacer with Bump Stop | ACOS Pro | Wrangler TJ & LJ, Cherokee XJ, Comanche MJ, Grand Cherokee ZJ SKU: JKS2700
    Fine tune your Jeeps off road suspension with the JKS adjustable coil spring spacers with built in hydraulic bump stops. Adjusting ride height to compensate for some additional weight, or a new set of tires has never been easier thanks to our ACOS spring...
    $1,267.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1610_jeep_j_flex_control_arms_card.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1610_jeep_j_flex_control_arms_rotation_1.jpg
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Front Lower | Wrangler JK SKU: JKS1610
    Upgrade your Jeep Wrangler JK's performance and reliability with JKS J-Flex adjustable front lower control arms. CNC-bent from stout DOM tubing, the fully adjustable design allows you to fine-tune suspension geometry. The ends are also fully rebuildable and greaseable. With heavy duty 1-1/4"-12 threads...
    $371.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1625_j_flex_control_arms_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1625_j_flex_control_arms_rotation_1.
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Front Lower | Wrangler JL and Gladiator JT SKU: JKS1625
    Your Jeep Wrangler JL and Gladiator JT will benefit from JKS J-Flex adjustable front lower control arms. They adjust for proper geometry while increasing driving comfort on the road. J-Flex arms are built from heavy duty 2" OD x .250-wall DOM tubing and CNC...
    $371.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1615_jeep_j_flex_control_arms_card.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1615_jeep_j_flex_control_arms_rotation_1.jpg
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Front Upper | Wrangler JK SKU: JKS1615
    Upgrade your JK Wrangler's off-road capability with JKS J-Flex adjustable front upper Control Arms. CNC-bent from DOM tubing for proper tire, frame and axle mount clearance, J-Flex control arms feature forged "flex" ends that are adjustable. The design increases reliability and allows you to...
    $318.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1616_j_flex_control_arms_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1616_j_flex_control_arms_rotation_1.
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Front Upper | Wrangler JL and Gladiator JT SKU: JKS1616
    Enhance the ride quality and driving comfort of your Jeep Wrangler JL or Gladiator JT with JKS J-FLEX front upper adjustable control arms. They make it easy to dial in correct geometry and also provide added rigidity. Constructed of high strength DOM tubing, J-Flex...
    $302.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1652_j_flex_control_arms_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1652_j_flex_control_arms_rotation_1.
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Front Upper | Wrangler TJ / LJ Cherokee XJ / Comanche MJ / Grand Cherokee ZJ and WJ SKU: JKS1652
    Enhance your Wrangler TJ, LJ, or Cherokee XJ Jeep with JKS J-Flex adjustable front upper Control Arms. CNC-bent from DOM tubing for proper tire, frame and axle mount clearance, these front upper control arms feature forged flex ends that are adjustable. The design increases...
    $328.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1650_jeep_j_flex_control_arms_card.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1650_jeep_j_flex_control_arms_rotation_1.jpg
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Lower | Wrangler TJ & LJ, Cherokee XJ SKU: JKS1650
    Upgrade your Jeep TJ or LJ Wrangler's performance and reliability with JKS J-Flex adjustable rear lower control arms. CNC-bent from stout DOM tubing, the fully adjustable design allows you to fine-tune suspension geometry. The ends are also fully rebuildable and greaseable. With heavy duty...
    $371.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1662_01.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1662_02.jpg
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Rear Lower | Gladiator JT SKU: JKS1662
    Built up your Jeep Gladiator JT the right way with these high strength J-Flex rear adjustable upper control arms from JKS. Built for superior strength and smooth operation on/offroad, these arms allow you to correctly position the rear axle and correct pinion angle on...
    $371.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1660_jeep_j_flex_control_arms_card.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1660_jeep_j_flex_control_arms_rotation_1.jpg
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Rear Lower | Wrangler JK SKU: JKS1660
    Upgrade your Jeep Wrangler JK's performance and reliability with JKS J-Flex adjustable rear lower control arms. CNC-bent from stout DOM tubing, the fully adjustable design allows you to fine-tune suspension geometry. The fully adjustable design allows you to fine-tune arm length. The ends are...
    $371.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1660_jeep_j_flex_control_arms_card.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1660_jeep_j_flex_control_arms_rotation_1.jpg
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Rear Lower | Wrangler JL SKU: JKS1661
    Your Jeep Wrangler JL will benefit from JKS J-Flex adjustable rear lower control arms. They adjust for proper geometry while increasing driving comfort on the road. J-Flex arms are built from heavy duty 2" OD x .250-wall DOM tubing and CNC bent for additional...
    $371.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1667_01.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1667_02.jpg
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Rear Upper | Gladiator JT SKU: JKS1667
    Built up your Jeep Gladiator JT the right way with these high strength J-Flex rear adjustable lower control arms from JKS. Built for superior strength and smooth operation on/offroad, these arms allow you to correctly position the rear axle for a wide range of...
    $318.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1665_jeep_j_flex_control_arms_card.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1665_jeep_j_flex_control_arms_rotation_1.jpg
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Rear Upper | Wrangler JK SKU: JKS1665
    Enhance your Wrangler JK Jeep's off-road prowess and reliability with JKS J-Flex adjustable rear upper control arms. CNC-bent from stout DOM tubing, the fully adjustable design allows you to fine-tune suspension geometry. The ends are also fully rebuildable and greaseable. With heavy duty 1-1/4"-12...
    $318.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1666_j_flex_control_arms_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1666_j_flex_control_arms_rotation_1.
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Rear Upper | Wrangler JL SKU: JKS1666
    Your Jeep Wrangler JL  will benefit from JKS J-Flex adjustable rear upper control arms. They adjust for proper geometry while increasing driving comfort on the road. J-Flex arms are built from heavy duty 2" OD x .250-wall DOM tubing and CNC bent for additional...
    $334.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1655_jeep_j_flex_control_arms_card.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_1655_jeep_j_flex_control_arms_rotation_1.jpg
    JKS Manufacturing
    JKS Manufacturing
    Adjustable Control Arms | Rear Upper | Wrangler TJ, LJ Grand Cherokee ZJ SKU: JKS1655
    Upgrade your Jeep Wrangler TJ, LJ or Grand Cherokee ZJ performance and reliability with JKS J-Flex adjustable rear upper control arms. CNC-bent from stout DOM tubing, the fully adjustable design allows you to fine-tune suspension geometry. The ends are also fully rebuildable and greaseable....
    $318.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_jspec5000k_jl_jt_front_coilover_conversion_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_jspec5000k_jl_jt_front_coilover_conversion_rotation_3.
    JKS Manufacturing
    JKS Manufacturing
    Coilover Conversion Kit with FOX 2.5 DSC Shocks | Front | Wrangler JL + Gladiator JT SKU: JSPEC5000K
    JKS Complete Front Coilover Conversion for Jeep Wrangler JL & Gladiator JTTransform your Jeep Wrangler JL or Gladiator JT into a trail-conquering powerhouse with the JKS Complete Front Coilover Conversion. This cutting-edge suspension upgrade pushes performance boundaries, delivering superior damping capability, extended suspension travel,...
    From $3,009.85
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_jspec5001k_jl_rear_coilover_conversion_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_jspec5001k_jl_rear_coilover_conversion_rotation_1.
    JKS Manufacturing
    JKS Manufacturing
    Coilover Conversion Kit with FOX 2.5 DSC Shocks | Rear | Wrangler JL SKU: JSPEC5001K
    Pull out all of the stops by upgrading to JKS complete rear coilover conversion for the Jeep Wrangler JL. Designed to compliment the available front coilover conversion, this rear coilover conversion takes performance to a whole new level to maximize damping capability while allowing...
    $2,756.90
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/CWLTW08104_01.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/CWLTW08104_02.jpg
    JKS Manufacturing
    CrawlTek Revolution
    D-Ring Shackle Hitch Receiver with Isolator SKU: CWLTW08104
    If your rig has a trailer hitch, this is a fantastic tool to add to your recovery gear. Locked into the receiver hitch, you now have a centralized rear tow point, with 3/4" forged shackle with 11,000 lbs of working limit.
    $39.99
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/CWLTW08101_01.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/CWLTW08101_02.jpg
    JKS Manufacturing
    CrawlTek Revolution
    D-Ring Shackle with Isolator | 3/4-in SKU: CWLTW08101
    One of those go-to items that should always be in your recovery bag, a forged 3/4" shackle with 7/8" screw-in pin. 10,500 lbs of working limit to help pull you from the stickiest situations
    $12.99
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/fox_88406178_jk_front_coilover_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/fox_88406178_jk_front_coilover_rotation_1.
    JKS Manufacturing
    FOX
    FOX 2.5 Front Coilover Shocks w/ DSC | Factory Race | Wrangler JK SKU: FOX88406178
    Convert your Jeep Wrangler JK to 10" travel FOX 2.5" Factory Race Series DSC Front Coil-overs and tackle any terrain. In addition to better shock damping response from FOX's proprietary IFP monotube design, you get complete control over shock compression with high and low...
    $1,587.96
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/fox_88326050_88326051_01.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/fox_88326050_88326051_02.jpg
    JKS Manufacturing
    FOX
    FOX 2.5 Front Shocks w/ DSC Reservoir Adjuster | 2-3 Inch Lift | Performance Elite Series | Jeep Wrangler JL (18-23) SKU: FOX88326050
    Give your 2018-2023 Jeep Wrangler JL a race-winning technology upgrade to improve damping in any terrain with FOX Performance Elite Series 2.5 front shocks with Dual Speed Compression (DSC) Reservoir Adjusters. Designed to be installed in conjunction with a BDS 2-3 inch lift kit...
    $1,679.95

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