JKS 3.5" Lift Kit · J-Krawl Wrangler JK 4-Door
- Lift 2-3.5"
- Install 6-8 hrs
- Difficulty Moderate
Questions about fitment? Live chat or call 866-235-4715
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Optional add-ons
Steering Stabilizers
Accessories
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- Free shippingMost orders $500+
- 30-day returnsSee policy
- Warranty supportWe work with the maker
Questions about fitment?
Talk to a TRU specialist
We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT
Important notes before you order
- 2012-2018 Models with 3.6L Pentastar motor will require exhaust modification for driveshaft clearance at full suspension droop, use JKS8150 exhaust extensions.
- Rubicon sway bar link hardware included in kit.
- Requires 17" or larger wheels with 4.5" BS (or smaller) for steering clearance.
TRU specialist notes
From the Trucks R Us fitment and install team, beyond the manufacturer's information.
- Plan for a professional wheel alignment after installing any lift or leveling kit.
- Going to bigger tires as well? Speedometer recalibration may be needed, and some tire and wheel combinations need trimming. Check the recommended wheels and tires, or ask us before you order.
Specifications
| Brand | JKS Manufacturing |
|---|---|
| Part number | JSPEC151KFA |
| UPC / GTIN | 814897015425 |
| Lift Height | 2-3.5" |
| Installation Difficulty | Moderate |
| Installation Time | 6-8 hrs |
| Install time | 6-8 hrs |
| Difficulty | Moderate |
California Proposition 65 warning applies to this product. www.P65Warnings.ca.gov
What's in the box
| Qty | Part | Description |
|---|---|---|
| — | — | Included with every option |
| 1 | JSPEC2350 | 3.5" Lift Coil Spring Set | Wrangler JK 4-Door |
| 1 | JSPEC2354 | 2007-2018 Jeep Wrangler (JK) J-Krawl Main Box Kit |
| — | — | FOX 2.0 Adventure Series / Flex End (JSPEC151KFA) |
| 2 | FOX98450351 | FOX 2.0 Front Shock | Adventure Series | 2.5"-3.5" Lift | Wrangler JK |
| 2 | FOX98450359 | FOX 2.0 Rear Shock | Adventure Series | 2.5"-3.5" Lift | Wrangler JK |
| 1 | JKS1610 | Adjustable Control Arms | Front Lower | Wrangler JK |
| 1 | JKS1615 | Adjustable Control Arms | Front Upper | Wrangler JK |
| 1 | JKS1660 | Adjustable Control Arms | Rear Lower | Wrangler JK |
| 1 | JKS1665 | Adjustable Control Arms | Rear Upper | Wrangler JK |
| — | — | FOX 2.0 Performance Series / Flex End (JSPEC151KFP) |
| 2 | FOX98024887 | FOX 2.0 IFP Front Shock | 1.5-3.5 Inch Lift | Performance Series | Jeep Wrangler JK (07-18) |
| 2 | FOX98024888 | FOX 2.0 IFP Rear Shock | 1.5-3.5 Inch Lift | Performance Series | Jeep Wrangler JK (07-18) |
| 1 | JKS1610 | Adjustable Control Arms | Front Lower | Wrangler JK |
| 1 | JKS1615 | Adjustable Control Arms | Front Upper | Wrangler JK |
| 1 | JKS1660 | Adjustable Control Arms | Rear Lower | Wrangler JK |
| 1 | JKS1665 | Adjustable Control Arms | Rear Upper | Wrangler JK |
| — | — | FOX 2.0 Remote Reservoir / Flex End (JSPEC151KFR) |
| 2 | FOX98524036 | FOX 2.0 Remote Reservoir Rear Shock | Performance Series | 2.5"-3.5" Lift | Wrangler JK |
| 2 | FOX98524039 | FOX 2.0 Remote Reservoir Front Shock | Performance Series | 2.5"-3.5" Lift | Wrangler JK |
| 1 | JKS1610 | Adjustable Control Arms | Front Lower | Wrangler JK |
| 1 | JKS1615 | Adjustable Control Arms | Front Upper | Wrangler JK |
| 1 | JKS1660 | Adjustable Control Arms | Rear Lower | Wrangler JK |
| 1 | JKS1665 | Adjustable Control Arms | Rear Upper | Wrangler JK |
| — | — | FOX 2.5 Performance Elite / Flex End (JSPEC151PES) |
| 1 | FOX88326091 | FOX 2.5 Front Shocks w/ DSC Reservoir | 2.5-4 Inch Lift | Performance Elite Series | Jeep Wrangler JK (07-18) |
| 1 | FOX88326092 | FOX 2.5 Rear Shocks w/ DSC Reservoir | 2.5-4 Inch Lift | Performance Elite Series | Jeep Wrangler JK (07-18) |
| 1 | JKS1610 | Adjustable Control Arms | Front Lower | Wrangler JK |
| 1 | JKS1615 | Adjustable Control Arms | Front Upper | Wrangler JK |
| 1 | JKS1660 | Adjustable Control Arms | Rear Lower | Wrangler JK |
| 1 | JKS1665 | Adjustable Control Arms | Rear Upper | Wrangler JK |
| — | — | FOX 2.0 Adventure Series / Rubber Bushing (JSPEC193KFA) |
| 2 | FOX98450351 | FOX 2.0 Front Shock | Adventure Series | 2.5"-3.5" Lift | Wrangler JK |
| 2 | FOX98450359 | FOX 2.0 Rear Shock | Adventure Series | 2.5"-3.5" Lift | Wrangler JK |
| 1 | JKS1631 | J-Link Adjustable Control Arms | Front Lower | Wrangler JK |
| 1 | JKS1633 | J-Link Adjustable Control Arms | Front Upper | Wrangler JK |
| 1 | JKS1636 | J-Link Adjustable Control Arms | Rear Lower | Wrangler JK/JL |
| 1 | JKS1639 | J-Link Adjustable Control Arms | Rear Upper | Wrangler JK & JL |
| — | — | FOX 2.0 Performance Series / Rubber Bushing (JSPEC193KFP) |
| 2 | FOX98024887 | FOX 2.0 IFP Front Shock | 1.5-3.5 Inch Lift | Performance Series | Jeep Wrangler JK (07-18) |
| 2 | FOX98024888 | FOX 2.0 IFP Rear Shock | 1.5-3.5 Inch Lift | Performance Series | Jeep Wrangler JK (07-18) |
| 1 | JKS1631 | J-Link Adjustable Control Arms | Front Lower | Wrangler JK |
| 1 | JKS1633 | J-Link Adjustable Control Arms | Front Upper | Wrangler JK |
| 1 | JKS1636 | J-Link Adjustable Control Arms | Rear Lower | Wrangler JK/JL |
| 1 | JKS1639 | J-Link Adjustable Control Arms | Rear Upper | Wrangler JK & JL |
| — | — | FOX 2.0 Remote Reservoir / Rubber Bushing (JSPEC193KFR) |
| 2 | FOX98524036 | FOX 2.0 Remote Reservoir Rear Shock | Performance Series | 2.5"-3.5" Lift | Wrangler JK |
| 2 | FOX98524039 | FOX 2.0 Remote Reservoir Front Shock | Performance Series | 2.5"-3.5" Lift | Wrangler JK |
| 1 | JKS1631 | J-Link Adjustable Control Arms | Front Lower | Wrangler JK |
| 1 | JKS1633 | J-Link Adjustable Control Arms | Front Upper | Wrangler JK |
| 1 | JKS1636 | J-Link Adjustable Control Arms | Rear Lower | Wrangler JK/JL |
| 1 | JKS1639 | J-Link Adjustable Control Arms | Rear Upper | Wrangler JK & JL |
| — | — | FOX 2.5 Performance Elite / Rubber Bushing (JSPEC193PES) |
| 1 | FOX88326091 | FOX 2.5 Front Shocks w/ DSC Reservoir | 2.5-4 Inch Lift | Performance Elite Series | Jeep Wrangler JK (07-18) |
| 1 | FOX88326092 | FOX 2.5 Rear Shocks w/ DSC Reservoir | 2.5-4 Inch Lift | Performance Elite Series | Jeep Wrangler JK (07-18) |
| 1 | JKS1631 | J-Link Adjustable Control Arms | Front Lower | Wrangler JK |
| 1 | JKS1633 | J-Link Adjustable Control Arms | Front Upper | Wrangler JK |
| 1 | JKS1636 | J-Link Adjustable Control Arms | Rear Lower | Wrangler JK/JL |
| 1 | JKS1639 | J-Link Adjustable Control Arms | Rear Upper | Wrangler JK & JL |
Features
- Front+Rear Dual Rate Coil Springs designed for a great ride quality and improved performance across any terrain.
- Front+Rear FOX 2.0 gas shocks specifically valved for this suspension system for improved performance on and off-road.
- Front Adjustable Track Bar and Rear Track Bar Bracket to correct axle positioning under vehicle.
- Front Sway Bar Quicker Disconnects and Brake Line Brackets to allow for increased offroad articulation.
- Front+Rear J-Flex Lower Control Arms for improved strength and caster correction.
- Front+Rear J-Flex Upper Control Arms for improved strength and caster correction.
- Front+Rear Bump Stop Extensions to properly limit suspension up travel.
Recommended wheels & tires
- 35 x 12.5 with 16 x 8 and 4.5 in. Backspace
- 35 x 12.5 with 17 x 9 and 4.5 in. Backspace
- 35 x 12.5 with 20 x 9 and 4.5 in. Backspace
- (Trimming may be required)
Installation
- Estimated install time6-8 hrs
- DifficultyModerate
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
Build the ultimate adventure rig with a 3.5" lift kit J-Krawl suspension system. Fits 4-Door Jeep Wrangler JK. Designed for maximum articulation and adjustability, the complete suspension system includes dual rate coil springs, adjustable front track bar, rear track bar bracket and tuned FOX shocks. The heart of the J-Krawl design is a set of J-Flex upper and lower control arms and sway bar Quicker disconnects. These systems build off Jeep's factory suspension mounting points and upgrades to front and rear, upper and lower J-Flex adjustable control arms for maximum articulation along with more strength for trails and rock crawling brawn along with adjustability to dial in front caster, rear pinion and overall vehicle wheelbase. In addition to eight high strength adjustable control arms, the J-Krawl system features specially designed FOX 2.0 IFP shocks to maximize travel and performance. An aftermarket front driveshaft is strongly recommended due to additional travel capable. Routine maintenance is required.
Questions
Will this fit my truck?
Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.
Do you help with installation?
Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.
What if the part has a problem?
We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.
Can I return it?
Most items can be returned within 30 days. See our return policy for details.
Do I need an alignment after installing?
Yes. Any lift or leveling kit changes suspension geometry, so get a professional alignment after installation.
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