Scroll to top
Jeep with the JSPEC? JKonnect 3.5

JKS New Product Announcement: Jspec 3.5" JKonnect Suspension Systems Now Available

Coldwater, MI — JKS Manufacturing continues to expand into the JK suspension market with the next level in on-and-off-road performance with new JSPEC? JKonnect 3.5" suspension systems for the 2007-2016 Jeep Wrangler and Wrangler Unlimited JK. These new systems are for the JK owner who wants it all: the culmination of our expertise in creating suspensions for the JK that accentuate the JK Wrangler?s strengths while addressing its weaknesses. By combining some of our best known off road ready upgrades with our popular daily driver friendly modifications, the JKonnect will transform your JK into the commuter that you aren't afraid to hit the trails with! Based off the widely popular 3.5" Jspec system, this new JKonnect system raises the bar with control arms and track bar bracing.

At the heart of any true Jeep® suspension system are properly designed coil springs. Not everyone uses their Jeep® for the same purposes, therefore you need a system that adapts to different terrains both on and offroad. By developing specially tuned sets of dual rate coils springs, JSPEC? coils provide the best performance in any driving situation. Whether loaded down with gear for a weeklong expedition, running light for some rock-crawling fun or loaded with a few friends for a trip to the beach, JSPEC? coils will provide the ride you want and the performance you need. From there, this systems adds the robust and nearly indestructible J-Link front and rear lower control arms to correct axle positioning. These arms are built from 2" OD x .250 wall DOM steel tubing and use premium Clevite brand rubber bushings to absorb the road vibrations for smooth, quiet operation.  To recenter the front axle under the Jeep and provide extra strength, JKS supplies a heavy duty adjustable front track bar formed from 1.5" x  .375 wall DOM tubing with durometer specific bushings. This combined with the weld-in track bar support gusset reinforces the front end for any abuse you may put it through. This kit also eliminates the drivability and bump steer issues common to lifted Jeep JK by improving the drag link angle with the drag link flip kit. This includes a replacement drag link along with a step bit to drill out the factory steering knuckles and a track bar relocation bracket. Additional components include the tried and true JKS quicker disconnects giving you the freedom to quickly improve suspension articulation for trail performance while maintaining quiet on-road comfort with solid construction and poly-flex ball bushings capable of high-misalignment. With all the extra flex JKS supplies front and rear brake line relocation brackets as well CNC machined front aluminum bump stop extensions to ensure your Jeep continues to perform wherever you take it. Rounding out the front of this kit are a pair of precision tuned FOX 2.0 gas shocks for improved ride quality and performance across any terrain.

In the rear, the 3.5" JKonnect system carries over the dual rate coil springs for better ride quality, J-Link lower control arms for improved strength and smooth operation, as well as bump stop extensions and brake line brackets to accommodate the additional ride height. The rear track bar mount on the axle is treated to a reinforcement brace and substantial rear track bar bracket to correct rear axle positioning. Finishing out the rear include a matching pair of FOX 2.0 gas shocks.

For customers already outfitted with the Jspec 3.5" suspension system, JKS also offers an advanced link upgrade kit to improve your Jeep’s performance. This upgrade kit includes the heavy duty J-Link lower control arms, drag link flip kit with track bar relocation bracket, front bump stop extensions and rear track bar mount reinforcement brace.

While these new 3.5" JKonnect systems come complete right out of the box, there are always additional optional accessories available. Some of these include the #8150 exhaust extensions for 2012 and newer vehicles, #PWT3575 J-Cal programmer to recalibrate speedometer and other electronics on the you JKS, replacement upper control arms, and upgraded FOX 2.0 remote reservoir shocks for improved dampening capabilities. Build your Wrangler JK to go further with JKS Manufacturing.

© JKS Manufacturing

About JKS: Since 1989, JKS Manufacturing has developed some of the most widely used and respected products for Jeep vehicles in the off-road industry. From the original Quick Disconnect™ brand of quick-release swaybar disconnect systems, to the innovative ACOS Pro™ variable height coil spring spacer with integrated bump shock, JKS® only manufactures products that provide unquestionable benefits to vehicle performance. It's no coincidence that those who know Jeep performance best choose JKS products for their own vehicles.

JKS Manufacturing, 491 W. Garfield Ave. Coldwater, MI 49036

(517) 278-1226 | |


3.5" JKonnect Suspension Systems


113K (JK 4Dr Kit)
114K (JK 2Dr Kit)
Jspec2451 (upgrade for standard Jspec kits)


$1975.00 (113K-114K)
$754.00 (Jspec2451)


2007-2016 Jeep Wrangler JK


View 4-Door Kit Online

View 2-Door Kit Online

View Install Instructions


Jeep JK Jspec 3.5

Click to View Hi-Res Kit Photos:

1 |  2 |  3 |  4


Jeep JK with Jspec 3.5in
                    JKontrol Suspension

Click to View Hi-Res Jeep JK Photos:

1 |  2 |  3 |  4

Tire/Wheel Recommended Specs

35x12.50 tires on 16x8 wheels (4.5? BSing) or comparable

3.5" JKonnect Kit Features

  • Dual Rate Coil Springs
  • Fox 2.0 Series Gas Shocks Front and Rear
  • JKS Front Adjustable Track Bar
  • JKS Front Sway Bar Quicker Disconnects
  • JKS J-Link Front & Rear Lower Control Arms
  • Front Track Bar Relocation Bracket * Support Gusset
  • Rear Track Bar Relocation Bracket & Support Brace
  • JKS Drag Link Flip Kit
  • Front and Rear Brake Line Relocation
  • Front and Rear Bump Stop Extensions
Factory Protection Plus Badge

The Ultimate Lifted Suspension Protection Coverage and it’s FREE!

Limited Lifetime Warranty

All JKS products are protected by a limited lifetime warranty to ensure they are free from manufacturer defects in material and workmanship so you can go with confidence knowing your JKS parts are covered.

  • - 5 Year, 100,000-mile PLUS Protection
  • - Free, no cost protection for JKS customers
  • - Could save thousands on possible repairs
  • - Easy online application process
  • - Available for most late model vehicles
Drivtrain 5year 60K Mile Protection

When you see this symbol you will know with confidence this application has been tested and successfully passed the Federal Motor Vehicle Safety Standard (FMVSS) No. 126 test. This highly specialized test was performed to show the installation of this particular J-Rate suspension system, with a specific tire and wheel package would not compromise the performance and effectiveness of the vehicle’s Electronic Stability Control (ESC) system.

Drivtrain 5year 60K Mile Protection

The cherry on top for the industry leading Factory Protection Plus Program is the Supplemental Limited Warranty offered at no additional cost to the customer. This warranty is designed to supplement the factory drivetrain warranty on each vehicle and provides the extra peace of mind knowing your Jeep is protected. All J-Rated lift systems include this supplemental coverage to match either the factory 5-year/100,000-mile drivetrain warranty offered.


Notice Something New?
See what's new at!

Shop On Your Phone or Tablet

All new website for fast and easy shopping on any device.

Improved Shopping Experience

Find everything Jeep Suspesion at your fingertips!

Follow JKS on Social Media


Get Deals Directly
Be the first to know of deals at JKS

NEW - Email Sign Up

Sign In or Create an Account