1 1

Skyjacker Suspension 4 in. Component Box w/ Dual Rate Long Travel Coil Springs - 18-22 Jeep Wrangler

Skyjacker Suspension 4 in. Component Box w/ Dual Rate Long Travel Coil Springs - 18-22 Jeep Wrangler

JL40BLT

Out of stock

$706.80 USD
$706.80 USD $706.80 USD
ADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The Skyjacker Suspension 4 in. Component Box with Dual Rate Long Travel Coil Springs is a high-performance suspension upgrade designed for 2018–2022 Jeep Wranglers. This kit features a specially engineered progressive variable rate coil spring, which transitions from a first Flex Rate for a comfortable ride and increased articulation, to a second Ride Rate for stability under compression. The dual-stage design ensures optimal coil seat retention during full droop, maintaining tire contact with uneven terrain. The springs are part of a comprehensive long travel system that enhances off-road capability and articulation, while maintaining proper suspension geometry. The kit includes components such as adjustable front track bars with HD OEM-style rubber bushings, heavy-duty rear track bar brackets, bump stop spacers, and extended sway bar end links with pressed-in bushings, all engineered to work seamlessly with the Wrangler’s handling characteristics.

Designed specifically for 2018–2022 Jeep Wranglers, this suspension component box is tailored for off-road enthusiasts seeking increased lift and articulation. The side-specific rear coils ensure precise fitment, while the included track bars and bump stop spacers help maintain proper axle alignment and suspension travel limits. Suitable for off-road use, this bolt-on kit enhances ground clearance, articulation, and overall vehicle stability during challenging terrain. Installation involves replacing existing components with these heavy-duty, engineered parts to improve off-road performance without compromising factory electronic stability control functions. This comprehensive kit is ideal for off-road adventures, trail riding, and vehicle customization.

Overview

Skyjacker specifically engineered a progressive variable rate coil spring, distinctively a 2-stage dual rate long travel coil. Spring rate progression is from a 1st Flex Rate to a 2nd Ride Rate. The 1st Flex Rate stage delivers a comfortable ride with the ability to flex for increased articulation. The flex rate expands during full articulation as the suspension drops (full droop). This keeps the coil springs seated in the upper coil mount/bucket and the tires in contact with the terrain. The 2nd Ride Rate stage only engages after compression past the flex rate. Engineered to coordinate with the Wrangler's distinctive suspension handling characteristics, the rear coils are side specific. The replacement Front Adjustable Track Bar includes Skyjacker installed pressed-in HD OEM style rubber bushing and an adjustable 3/4- in. Heavy-Duty Rod End, Jam Nut and Alignment Bushings. A heavy duty Rear Track Bar Upper Mount Bracket is included to center the axle under the vehicle properly. Front and Rear Bump Stop Spacers bolt onto the axle bump pads and keep the suspension travel safely in check. Front and Rear Extended Length Sway Bar End Links allow full articulation as the suspension drops (full droop). These sway bar end links include Skyjacker installed pressed-in HD OEM style rubber bushings. Proper suspension geometry ensures the Electronic Stability Control (ESC) system functions within factory parameters.

View full details