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_1600_jeep_spring_retainer_card.
    JKS Manufacturing
    JKS Manufacturing
    Rear Coil Spring Retainer | Wrangler JK
    Rear Coil Spring Retainers are an important safety upgrade for your Jeep Wrangler JK. While longer shocks are likely to increase suspension travel, they can also allow coil springs to become unseated from their axle perches. If you're lucky, you will only be faced...
    $37.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/JKS_JL_JSPEC155PS_1.jpg
    JKS Manufacturing
    JKS Manufacturing
    1.5" Lift Kit | FOX 2.5 IFP Shocks | J-Spec System | Jeep Wrangler JL
    If JKS designed the factory JL Wrangler suspension, this is how it would be done! Introducing the JKS 1.5" J-Spec Suspension System with specially tuned FOX 2.5 IFP Performance Series shocks. Whether your focus is improving on-road characteristics or suspension performance in the backcountry,...
    $1,699.90
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/JT_Jkrawl_01_PS.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_shock_buyers_guide.jpg
    JKS Manufacturing
    JKS Manufacturing
    3.5" Lift Kit | J-Krawl | Gladiator JT
    Designed for maximum articulation, improved strength, and adjustability, these complete J-Krawl systems are available for next-level performance. Components include your choice of J-Flex or J-Link upper and lower control arms, Jspec dual-rate coil springs at each corner designed to level out the stance, and a...
    From $3,285.45
  • 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
    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/jks2711_jeep_acos_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks2711_jeep_acos_rotation_1.
    JKS Manufacturing
    JKS Manufacturing
    Front Adjustable Coil Spacer with Hydraulic Bump Stop | ACOS Pro | Wrangler JL and Gladiator JT
    Fine tune your Jeep 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...
    $901.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_2710_jeep_acos_pro_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_2710_jeep_acos_pro_rotation_1.
    JKS Manufacturing
    JKS Manufacturing
    Front Adjustable Coil Spacer Pro | Wrangler JK
    Fine tune your JK Wrangler's ride height with JKS adjustable coil spacers (ACOS) 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 spacers....
    $901.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/JKS2571_01.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/JKS2571_02.jpg
    JKS Manufacturing
    JKS Manufacturing
    Rear Adjustable Coil Spacer| ACOS | Wrangler JL
    Fine tune your Jeep Wrangler JL ride height with JKS rear adjustable coil spring spacers (ACOS). ACOS feature adjustable collars along with built in bump stops. Whether you added some extra weight, a larger set of tires or just did not quite get enough...
    $397.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_2571_acos_spacers_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_2571_acos_spacers_rotation_1.
    JKS Manufacturing
    JKS Manufacturing
    Rear Adjustable Coil Spacer| ACOS | Wrangler JK
    Fine tune your Jeep Wrangler JK's ride height with JKS rear adjustable coil spring spacers (ACOS). ACOS feature adjustable collars along with built in bump stops. Whether you added some extra weight, a larger set of tires or just did not quite get enough...
    $397.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_2510_jk_front_coilover_conversion_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_2510_fox_88406178_jk_front_coilover_card.
    JKS Manufacturing
    JKS Manufacturing
    Coilover Mounting Kit | Front | Wrangler JK
    You want FOX Coil-overs on your JK Jeep Wrangler. JKS has the strongest easiest-to-install Coil-over conversion system in the industry. This kit fits the front position and accepts FOX 2.5" 10" travel Coil-overs -- including provisions to mount remote reservoirs. In addition to the...
    $573.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/JKS1632_03.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/JKS1632_02.jpg
    JKS Manufacturing
    JKS Manufacturing
    J-Link Adjustable Control Arms | Front Lower | Wrangler JL
    Enhance your Jeep™s off-road prowess and reliability with JKS J-Link Adjustable Control Arms - now available with premium rubber bushings! Engineered specifically to reduce NVH characteristics (Noise, vibration, harshness), these factory style maintenance-free rubber bushings come pre-installed at both ends and will ensure a...
    $399.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/JKS1631_03.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/JKS1631_04.jpg
    JKS Manufacturing
    JKS Manufacturing
    J-Link Adjustable Control Arms | Front Lower | Wrangler JK
    Enhance your Jeep™s off-road prowess and reliability with JKS J-Link Adjustable Control Arms - now available with premium rubber bushings! Engineered specifically to reduce NVH characteristics (Noise, vibration, harshness), these factory style maintenance-free rubber bushings come pre-installed at both ends and will ensure a...
    $399.95
  • 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
    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/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
    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/CWLCT00001_02.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/CWLCT00001_01.jpg
    JKS Manufacturing
    CrawlTek Revolution
    1" CNC Machined Shackle Tabs (Pair)
    CNC machined from 1" 1018 steel these shackle tabs are built for heavy duty recovery. They are designed to be welded front and rear and feature a tab slot design.
    $65.99
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/fox_98624155_98624157_01.jpghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/fox_98624155_98624157_02.jpg
    JKS Manufacturing
    FOX
    FOX 2.5 IFP Rear Shock - Single | Performance Series | 2-3.5" Lift | Jeep Gladiator JT
    Looking to increase your vehicle's off-road capability by running larger tires? The new Performance Series 2.5-inch Jeep shocks are designed to provide on-road comfort with performance-minded valving for a connected ride with less vehicle sway. How? Consistent and fade-resistant performance due to high-quality materials:...
    $259.00
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/883_26_053_fox_truck_performance_elite_reservoir_shock_op_1600x1600.pnghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/883_26_053_fox_truck_performance_elite_reservoir_shock_cu_a_1600x1600.png
    JKS Manufacturing
    FOX
    FOX 2.5 Reservoir Rear Shocks Adjustable | Performance Elite | 4.5-6 Inch Lift | Wrangler JL (18-25)
    FOX's all-new Performance Elite shocks are a game changer for Jeep enthusiasts. PN 883-26-056 2.5" diameter remote-reservoir monotube shocks are designed specifically for Wrangler JLs with 4.5-6" Lift -- rear position. Valving is tuned specifically for JLs with larger than stock aftermarket wheels and...
    $1,599.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/rep_883_26_052_fox_truck_performance_elite_reservoir_shock_pr_1600x1600.pnghttps://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/rep_883_26_052_fox_truck_performance_elite_reservoir_shock_op_1600x1600.png
    JKS Manufacturing
    FOX
    FOX 2.5 Reservoir Front Shocks Adjustable | Performance Elite | 4.5-6 Inch Lift | Wrangler JL (18-25)
    FOX's all-new Performance Elite shocks are a game changer for Jeep enthusiasts. PN 883-26-052 2.5" diameter remote-reservoir monotube shocks are designed specifically for Wrangler JLs with 4.5-6" Lift -- Front position. Valving is tuned specifically for JLs with larger than stock aftermarket wheels and...
    $1,599.95
  • https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/fox_88326050_88326051_01.jpg
    JKS Manufacturing
    FOX
    FOX 2.5 Reservoir Front Shocks Adjustable | Performance Elite | 0-1.5 Inch Lift | Wrangler JL (18-25)
    FOX's all-new Performance Elite shocks are a game changer for Jeep enthusiasts. PN 883-26-049 2.5" diameter remote reservoir monotube shocks are designed specifically for Wrangler JLs with 0-1.5" Lift -- Front position. Valving is tuned specifically for JLs with larger than stock aftermarket wheels...
    $1,599.95
  • 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
    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_jspec_129kfc_jl_j_max_card.https://serenity-foxfactory.asset.akeneo.cloud/fox_asset_family/media/jks_jspec_129kfc_jl_j_max_rotation_2.
    JKS Manufacturing
    JKS Manufacturing
    3.5" Lift Kit | J-Max | Wrangler JL
    J-Max pulls out all of the stops to offer a truly performance driven suspension package. At each corner are custom tuned FOX 2.5 factory race series coilovers with DSC adjustment. These coilovers offer race proven technology with a larger 2.5” diameter body, dual rate...
    From $7,754.50

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