Skyjacker Dual Rate Long Travel Coil Springs
2020–2023 Jeep Wrangler JL 3.0L EcoDiesel
Part #: JL40BLTD
Overview
The Skyjacker 4-inch Dual Rate Long Travel Coil Springs are precision-engineered suspension components designed specifically for the 2020–2023 Jeep Wrangler JL equipped with the 3.0L EcoDiesel engine. These coil springs feature a progressive variable rate design that enhances both ride comfort and off-road articulation. By combining two distinct spring rates into one innovative coil, Skyjacker delivers a suspension upgrade that maintains factory-like handling while improving wheel travel and terrain contact. Ideal for Jeep enthusiasts seeking improved suspension performance without sacrificing drivability, these springs optimize the Wrangler’s unique suspension geometry for superior on- and off-road capability.
Key Features
Skyjacker’s dual rate coil springs incorporate advanced technology to balance comfort, articulation, and control. Key features include:
- Progressive variable rate design with two distinct stages: a 1st Flex Rate for comfortable ride and articulation, and a 2nd Ride Rate for controlled compression.
- 1st Flex Rate stage allows increased suspension droop for better tire contact during off-road articulation.
- 2nd Ride Rate stage engages after compression beyond the flex rate, providing firm support under load.
- Side-specific rear coils engineered to match the Wrangler JL’s suspension characteristics.
- Includes front adjustable track bar with heavy-duty OEM style rubber bushings and adjustable rod end for precise alignment.
- Heavy-duty rear track bar upper mount bracket centers the axle correctly under the vehicle.
- Front and rear bump stop spacers bolt onto axle bump pads to safely limit suspension travel.
- Extended length sway bar end links with heavy-duty rubber bushings allow full articulation without binding.
- Designed to maintain proper suspension geometry and ensure Electronic Stability Control (ESC) functions within factory parameters.
Construction & Design
Skyjacker’s coil springs are crafted from high-quality steel alloys engineered for durability and consistent performance under demanding conditions. The dual rate design incorporates a progressive coil spacing and variable wire diameter to achieve two distinct spring rates within a single spring. This innovative approach allows the springs to flex easily during articulation while providing firm support when compressed, preventing coil bind and maintaining ride height. The side-specific rear springs are tailored to the Wrangler JL’s suspension layout, ensuring balanced handling and optimal axle positioning. All components, including track bars and sway bar end links, feature heavy-duty pressed-in OEM style rubber bushings to reduce noise and vibration while enhancing longevity.
Installation & Fitment
These coil springs are designed as a direct replacement for the factory springs on 2020–2023 Jeep Wrangler JL models with the 3.0L EcoDiesel engine. Installation requires standard suspension disassembly and can be completed by experienced DIYers or professional technicians. The kit includes all necessary components to maintain proper suspension geometry and alignment, minimizing the need for additional modifications. The adjustable front track bar and included alignment bushings facilitate precise axle centering and tracking. Front and rear bump stop spacers and extended sway bar end links ensure safe suspension travel and articulation without compromising stability or ESC functionality.
What's Included
- 4-inch dual rate long travel coil springs (front and side-specific rear)
- Front adjustable track bar with pressed-in heavy-duty OEM style rubber bushings
- Adjustable 3/4-inch heavy-duty rod end, jam nut, and alignment bushings for track bar
- Heavy-duty rear track bar upper mount bracket
- Front and rear bump stop spacers
- Front and rear extended length sway bar end links with pressed-in heavy-duty rubber bushings
Ideal For
This Skyjacker coil spring kit is ideal for Jeep Wrangler JL owners who want to enhance their vehicle’s off-road articulation and suspension travel while maintaining a comfortable on-road ride. It suits enthusiasts who demand reliable, durable suspension components that improve terrain contact and axle control without sacrificing factory safety features like Electronic Stability Control. Whether tackling rugged trails or daily driving, these springs provide a balanced upgrade for 3.0L EcoDiesel Wrangler JL models.
Skyjacker is a long-running off-road suspension brand offering lift kits, shocks, steering stabilizers, and related components for trucks, SUVs, and Jeeps. Built to increase clearance for larger tires and improve trail capability, Skyjacker systems are popular for enthusiasts who want a tougher stance and more off-road confidence with proven application coverage.
Skyjacker 4in Dual Rate Long Travel Coil Springs: Jeep Wrangler JL 2020-2023 3.0L EcoDiesel
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JL40BLTD Skyjacker 20-23 Jeep Wrangler 3.0L EcoDiesel 4in Dual Rate Long Travel Coil Springs. Skyjacker's dual rate long travel coil springs provide a smooth, comfortable ride with enhanced articulation for off-road performance. The progressive two-stage design maintains tire contact during full suspension droop, improving traction and stability. Side-specific rear coils and included heavy-duty track bars, bump stop spacers, and extended sway bar end links ensure proper suspension geometry and ESC system function. Perfect for Jeep Wrangler owners seeking improved off-road capability without sacrificing daily driving comfort.
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Skyjacker Dual Rate Long Travel Coil Springs
2020–2023 Jeep Wrangler JL 3.0L EcoDiesel
Part #: JL40BLTD
Overview
The Skyjacker 4-inch Dual Rate Long Travel Coil Springs are precision-engineered suspension components designed specifically for the 2020–2023 Jeep Wrangler JL equipped with the 3.0L EcoDiesel engine. These coil springs feature a progressive variable rate design that enhances both ride comfort and off-road articulation. By combining two distinct spring rates into one innovative coil, Skyjacker delivers a suspension upgrade that maintains factory-like handling while improving wheel travel and terrain contact. Ideal for Jeep enthusiasts seeking improved suspension performance without sacrificing drivability, these springs optimize the Wrangler’s unique suspension geometry for superior on- and off-road capability.
Key Features
Skyjacker’s dual rate coil springs incorporate advanced technology to balance comfort, articulation, and control. Key features include:
- Progressive variable rate design with two distinct stages: a 1st Flex Rate for comfortable ride and articulation, and a 2nd Ride Rate for controlled compression.
- 1st Flex Rate stage allows increased suspension droop for better tire contact during off-road articulation.
- 2nd Ride Rate stage engages after compression beyond the flex rate, providing firm support under load.
- Side-specific rear coils engineered to match the Wrangler JL’s suspension characteristics.
- Includes front adjustable track bar with heavy-duty OEM style rubber bushings and adjustable rod end for precise alignment.
- Heavy-duty rear track bar upper mount bracket centers the axle correctly under the vehicle.
- Front and rear bump stop spacers bolt onto axle bump pads to safely limit suspension travel.
- Extended length sway bar end links with heavy-duty rubber bushings allow full articulation without binding.
- Designed to maintain proper suspension geometry and ensure Electronic Stability Control (ESC) functions within factory parameters.
Construction & Design
Skyjacker’s coil springs are crafted from high-quality steel alloys engineered for durability and consistent performance under demanding conditions. The dual rate design incorporates a progressive coil spacing and variable wire diameter to achieve two distinct spring rates within a single spring. This innovative approach allows the springs to flex easily during articulation while providing firm support when compressed, preventing coil bind and maintaining ride height. The side-specific rear springs are tailored to the Wrangler JL’s suspension layout, ensuring balanced handling and optimal axle positioning. All components, including track bars and sway bar end links, feature heavy-duty pressed-in OEM style rubber bushings to reduce noise and vibration while enhancing longevity.
Installation & Fitment
These coil springs are designed as a direct replacement for the factory springs on 2020–2023 Jeep Wrangler JL models with the 3.0L EcoDiesel engine. Installation requires standard suspension disassembly and can be completed by experienced DIYers or professional technicians. The kit includes all necessary components to maintain proper suspension geometry and alignment, minimizing the need for additional modifications. The adjustable front track bar and included alignment bushings facilitate precise axle centering and tracking. Front and rear bump stop spacers and extended sway bar end links ensure safe suspension travel and articulation without compromising stability or ESC functionality.
What's Included
- 4-inch dual rate long travel coil springs (front and side-specific rear)
- Front adjustable track bar with pressed-in heavy-duty OEM style rubber bushings
- Adjustable 3/4-inch heavy-duty rod end, jam nut, and alignment bushings for track bar
- Heavy-duty rear track bar upper mount bracket
- Front and rear bump stop spacers
- Front and rear extended length sway bar end links with pressed-in heavy-duty rubber bushings
Ideal For
This Skyjacker coil spring kit is ideal for Jeep Wrangler JL owners who want to enhance their vehicle’s off-road articulation and suspension travel while maintaining a comfortable on-road ride. It suits enthusiasts who demand reliable, durable suspension components that improve terrain contact and axle control without sacrificing factory safety features like Electronic Stability Control. Whether tackling rugged trails or daily driving, these springs provide a balanced upgrade for 3.0L EcoDiesel Wrangler JL models.
Skyjacker is a long-running off-road suspension brand offering lift kits, shocks, steering stabilizers, and related components for trucks, SUVs, and Jeeps. Built to increase clearance for larger tires and improve trail capability, Skyjacker systems are popular for enthusiasts who want a tougher stance and more off-road confidence with proven application coverage.
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YEARMAKEMODELSUBMODEL2020 - 2023JeepWrangler3.0L EcoDiesel
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Standard shipping
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
Free Easy Returns
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.