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3.5" Lift Kit | J-Max | Wrangler JL
JKS
ROAD
TRAIL
CRAWL
BAJA
J-Max systems are J-Rated™ for higher-speed "Baja" off-road use with tunable on-road manners. Routine maintenance required.
Looking for a different terrain focus? Click here...
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 springs and (DSC) dual speed compression adjustment for maximum tunability. Each of the 8 control arms, upper and lowers, front and rear are upgraded to J-Flex adjustable control arm for improved strength, offroad performance and adjustability. In addition, these kits feature high strength bolt-on coilover mounting brackets, an adjustable front track bar, sway bar quicker disconnects and more offer take your Jeeps trail performance and strength to the next level. It should be noted that an aftermarket front driveshaft is strongly recommended due to additional travel capable.
Difficulty: Very difficult | Time: 14hrs
Need to locate install help for other JKS products?
Click here to visit our Installation Center!
Rubicon Models (all kits)
37x12.50 17x9, 18x9, 20x9 5" BS
Non-Rubicon Models (all kits)
35x12.50 17x9, 18x9, 20x9 5" BS
* Other tire/wheel sizes can be used, however may require additional modification
In the box for JSPEC129KFC:
JSPEC1313 (x1) 2018+ JL 3.5in J-Max Box Kit
JKS1616 (x1) Jeep JL Front Upper J-Flex Control Arms
JKS1625 (x1) Jeep JL Front Lower J-Flex Control Arms
JKS1666 (x1) Jeep JL Rear Upper J-Flex Control Arms
JKS1661 (x1) Jeep JL Rear Lower J-Flex Control Arms
JKS2511 (x1) Jeep JL Front Coil-over Mount Box Kit
JKS2512 (x1) Jeep JL Front Coil-over Bump Kit
JKS2518 (x1) Jeep JL Rear Coil-over Mount Box Kit
FOX88406252 (x1) 18-ON Jeep Wrangler JL Front Coilover, 2.5 Series, R/R, 3.5" Lift, DSC
FOX88406253 (x1) 18-ON Jeep Wrangler JL Rear Coilover, 2.5 Series, P/B, 3.5" Lift, DSC
Where can I find replacement parts for my lift kit components?
Click here to shop our Maintenance & Service Packs Collection
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.
ROAD
TRAIL
CRAWL
BAJA
J-Max systems are J-Rated™ for higher-speed "Baja" off-road use with tunable on-road manners. Routine maintenance required.
Looking for a different terrain focus? Click here...
© Fox Factory, Inc. | Jeep is a registered trademark of FCA US LLC.
PROPOSITION 65 WARNING EXPLANATION
JKS Manufacturing applies warning labels either on our product(s), the packaging containing our product(s) regarding CA Prop 65. This warning is part of our effort to comply with the California Safe Drinking Water and Toxic Enforcement Act of 1986 (known as “Proposition 65”). The warning does not mean that our products will necessarily cause cancer, birth defects, or other reproductive harm. While we believe our products are not harmful when used as designed, and we rely on our suppliers to help with this effort, we also provide these warnings to comply with Proposition 65.
What is California Proposition 65?
Proposition 65 is a far reaching law and applies to any company that operates in California, sells products in California, or manufactures products that may be sold in or brought into California. Proposition 65 requires warnings to accompany any product that contains or may contain any of the chemicals appearing on the list administered by California’s Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The current list can be found here: https://oehha.ca.gov/proposition-65/proposition-65-list
What This Means To You
While the proposition was created to protect drinking water sources from chemical contamination, the scope of the law has expanded over the years. It now includes over 900 chemicals and also pertains to (but is not limited to) exposure through touch, inhalation, ingestion, or skin contact.
The Prop 65 warning can now be found on products that may contain a small amount of over 900 chemicals or ingredients that the OEHHA lists as a carcinogen or reproductive toxicant. This includes compounds that are used in everyday life like vinyl, coatings, plastics, and much more.
Why has JKS Manufacturing decided to provide a warning?
Proposition 65 imposes strict penalties for noncompliance. While California establishes “safe harbor numbers” for listed chemicals, the costs of individually testing products that JKS Manufacturing sells and distributes is prohibitive (particularly when the list of chemicals is so expansive and subject to change on an annual basis).
As a result of the steep penalties and because there is no penalty for providing an unnecessary warning, JKS Manufacturing (like some other companies doing business in California) decided to provide the Proposition 65 notice out of an abundance of caution.
For more information about Proposition 65 we suggest that you visit:
http://oehha.ca.gov/prop65/background/p65plain.html
IFP design eliminates oil aeration Valved specifically for JSPEC systems. Direct bolt-in replacement.
The 2.0 Performance Series IFP shock has a predicable ride quality capable of handling the roughest road conditions.
Shock absorbers are an important part of your Jeep’s suspension system. JKS offers a range of custom-valved shocks to fit your budget and performance needs. JSPEC Series gas shocks feature affordable twin-tube design with custom valving for improved handling and ride quality on and off-road. Ride quality is tuned to work with large diameter all-terrain tires. For more aggressive off-road performance, step up to optional FOX shock absorbers. They feature IFP technology, aluminum bodies, heavy duty shafts and superior monotube valving for a better driving experience regardless of terrain.
JKS J-Rated Suspension Systems feature custom wound, progressive rate coil springs. That means the spring rate increases as the spring is compressed. You and your Jeep enjoy a plush ride during low load driving scenarios such as highway cruising with increased performance as each spring compresses. If you carry a significant amount of extra gear in your Jeep, some J-Rated suspension systems are available with optional high-rate coil springs to support the additional weight.