{"product_id":"rock-krawler-3-5in-ultimate-adventure-mid-arm-suspension-system-wrangler-jl-unlimited-4-door","title":"Rock Krawler 3.5\" Ultimate Adventure Mid-Arm Suspension System","description":"\u003cp\u003eThe \u003cstrong\u003eRock Krawler 3.5\" Ultimate Adventure Mid-Arm System\u003c\/strong\u003e for the JL Unlimited (4-Door) is the \"heavy-hitter\" setup for owners who want a formidable trail presence without jumping into the complexity of a long-arm conversion. At 3.5 inches of lift, the JLU gains a massive boost in ground clearance, which is essential for the 4-door’s longer wheelbase to avoid high-centering on obstacles. This kit is a complete geometry correction solution, providing all eight adjustable Adventure-X control arms to reset your caster and pinion angles. This ensures that even with the increased height and larger rotating mass of heavy tires, the Jeep maintains a stable, confident \"on-rails\" feel at highway speeds.\u003c\/p\u003e\r\n\r\n\u003cp\u003eEngineered to handle the weight of a fully outfitted rig, this system utilizes Rock Krawler’s signature Triple-Rate Coil Springs. These springs are specifically tuned for the 4-door chassis, offering a plush initial stroke for road comfort while providing a progressive rate that handles heavy bumpers, winches, and rooftop tents without sagging. By replacing the weak factory arms with high-clearance, solid steel components and a heavy-duty adjustable front track bar, you’re not just lifting the Jeep—you’re significantly reinforcing the entire drivetrain architecture for years of hard use.\u003c\/p\u003e","brand":"Rock Krawler","offers":[{"title":"Default Title","offer_id":51024478601474,"sku":null,"price":2308.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/8199\/0914\/files\/rock-krawler-3.5in-ultimate-adventure-system-jlu-jl35ua-4_67adc8f9-5eae-4e89-b8b9-2d829cef1bdc.jpg?v=1794365854","url":"https:\/\/shop.quadratec.com\/products\/rock-krawler-3-5in-ultimate-adventure-mid-arm-suspension-system-wrangler-jl-unlimited-4-door","provider":"Quadratec","version":"1.0","type":"link"}