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JKS JSPEC 3.5in J Kontrol Suspension System Lift Kit - JK 4DR
Manufacturer Part # 108K
At the heart of any true Jeep suspension "system" are properly designed coil springs. Not everyone does the same thing with their Jeep, therefore you need a system that adapts to different terrain as well as on and offroad situations. By developing tuned sets of dual rate coils springs, JSpec coils provide the best performance in any situation. Whether loaded down with gear for a week long 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 with the performance you need.Fox 2.0 Series Front and Rear Shocks
A great set of coil springs are useless unless you have a set of shocks to control them. When developing a shock to work in harmony with the JSpec coil springs we went with the best, FOX. The Fox 2.0 Series shocks provide a quality ride and complete control no matter what terrain you are tackling. The IFP (internal floating piston) design keeps the high-performance shock oil separated from the 200 psi nitrogen gas charge. This separation provided by the IFP eliminates oil aeration which basically means you can work these shocks hard and not experience any performance fade. Labeled with the popular "FOX" logo you will be proud to show off your shocks while flexing-out your high-performance JSpec suspension.JKS Adjustable Front Track Bar
When you think of adjustable Jeep track bars you think JKS. For years, Jeepers the world over have trusted JKS adjustable track bars for their strength, fit, function and durability. For those reasons it is a "no-brainer" that a JKS front adjustable track bar be an integral part of the JSpec JK suspension systems. The adjustable track bar dwarfs the factory component, offering fine adjustability of the front axle position to compensate for the additional lift height provided by the JSpec coil springs. Factory style rubber bushings are used at each end of the bar for quiet and compliant function. The 1-1/4"-12 threaded adjustable end provides fine-tune adjustability and superior strength when combined with the 1-1/2" x 3/8" wall DOM tube, CNC formed track bar. Adding an adjustable track bar versus a relocation bracket also keeps the JKs steering angles in-phase to provide great handling and keep bump steer in check.The Control Arm Brackets:
The reduced control arm angles allow the front suspension to more naturally roll over bumps and grooves in the road. Forces are better directed into the coil springs and shocks where they can be absorbed and controlled versus into the control arms and frame where they are felt more and create a less controlled handling feel (rough ride). The upper and lower control arm mounting holes are precisely positioned to provide the correct caster.
On 2012-2014 JK models, the new geometry increases clearance between the front driveshaft and exhaust at full suspension droop also improving the front drive shaft CV joint operating angles through full wheel travel. (All models)
Brackets are made from heavy-duty 7GA steel and are fully boxed and welded for superior strength when compared to bolt together 2-piece designs. The brackets install inside the factory upper and lower control arm mounts with the factory hardware. The heavy boxed construction, fully gusseted lower mount and welded crush sleeves give you extra confidence both on and off road.JKS Front Sway Bar Quicker Disconnects
The flag-ship JKS Manufacturing product is the Quicker Disconnect. JKS was the originator of the sway bar disconnect concept. That original concept was perfected with the Quicker Disconnect design which still remains the best sway bar disconnect on the market today. Adjustable length and greasable with JKS-exclusive poly-flex ball, high-misalignment ends, the Quicker Disconnect is everything you want in a sway bar disconnect. Stainless steel mounting studs provide an anchoring point for each end of the links and allow for easy removal and installation. Rubicon owners, we haven't forgot about you. Want to maintain the function of the factory Rubicon disconnecting sway bar and still enjoy the benefits of the Quicker Disconnect adjustability, serviceability and misalignment ends? The proper hardware is included in the new JSpec suspension systems to bolt the Quicker Disconnect links to the axle and sway bar. This eliminates the disconnecting pins while maintaining the other great benefits of the links.Front and Rear Brake Line Relocation
How much can you say about brake line relocation? Well, it is a necessity anytime a JK is lifted much over 2", especially with longer travel shocks. In most kits on the market these items are an after-thought but not in the JSpec kits. The JKS brake line brackets included in the JK JSpec suspension systems utilize the factory brake line mounting holes and locating tabs. This ensures that the brackets won't rotate and eventually come loose. The brackets were designed specifically to work with the shock lengths used with each JSpec system. The result is just enough length at full axle droop with minimal modifications to the factory routing. And just as a reminder of where you they came from, the rear brackets get treated the famous 'JKS' oval logo sticker.Rear Track Bar Bracket
As with the front suspension, the rear requires modification to the factory track bar setup to compensate for the new ride height. While the front gets a new track bar, the rear is treated with a track bar relocation bracket. The relocation bracket was chosen here for a couple reasons. First, by raising the track bar mount position at the axle we flatten the track bar angle and make a slight adjustment to the roll-center height which helps with handling and body roll. Second, the new track bar relocation bracket doubles as a factory axle bracket brace. The factory rear axle track bar mount has been a known weak link since the JK was first built in 2007. By making the new relocation bracket out heavy-duty 3/16" steel and bracing directly to the axle tube, the factory bracket is reinforced and up to the task of handling the new lifted height of the JSpec suspension system.Front and Rear Bump Stop Extensions
The front and rear bump stop extensions, like brake line relocation brackets, are another component set that usually doesn't get much attention with most lift "kits" on the market. The bump stop extensions in the JK JSpec suspension systems were made specifically to maximize suspension travel while maintaining save compression limits for both the coil springs and Fox 2.0 shocks. The front extensions are made from 2-3/4" billet aluminum while the rear extensions are made from heavy-wall steel rectangular tube. Both sets fasten directly to the axle and are made to hold up to the abuse your new JSpec equipped JK is now built to handle.
This item is non application specific.
Please verify compatibility before purchase. May require some modification for proper installation.