Skyjacker 2007-2018 Jeep Wrangler JK 4 Door 4WD (Unlimited) Long Travel 4in Rear Coil Spring Set
Skyjacker 2007-2018 Jeep Wrangler JK 4 Door 4WD (Unlimited) Long Travel 4in Rear Coil Spring Set
Description
skyJKU40RDR
Rear Dual Rate Long Travel Coil Springs 4-Door Wrangler JK 4 in. Lift, Dual-rate Long Travel Coils maintain coil in bucket at full droop, Maximizes Articulation, Higher Strength Alloy over competitors prevents sagging, fractures and allows for powder coating, Matched to OEM Spring Rate for superb ride quality.
Additional Information
4in. JK 4DR REAR DR COILS/PR
| Additional Application Notes | |
|---|---|
| • 4 in. Lift; Pair; Incl. Dual Rate/Long Travel Series Coil Springs;w/4 in. Lift; | |
| • 4 in. Lift; Pair; Incl. Dual Rate/Long Travel Series Coil Springs; w/4 in. Lift | |
These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.
This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.
Kit option/s:
| Thumb | SKU | Kit Title |
|---|---|---|
| skyJK40LKLTSX-XM | Skyjacker 07-18 Jeep Wrangler Jk Unlimited 4 In. Long Arm Susp. Lift Kit With ADX M2.0 Aluminum (1x skyJK4070XM, 1x skyJK46LA-SX, 1x skyJKFTBA717, 1x skyJKU40FDR, 1x skyJKU40RDR, 1x skyJK45LA) |
Data: v2 - Desc: v4.2 - Upd: 2026-11-09 02:25:42
Features
- Dual-Rate Long Travel
- Lifetime Warranty
- Matched To OEM Ride
- Maximum Articulation
- Superb Ride
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Description: | 4 Inch Rear Coil Springs/Pair |
| Part Number: | skyJKU40RDR |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Skyjacker, Skyjacker Suspensions |
| StreetFX SKU | skyJKU40RDR |
| SFX Item ID | 4328425 |
| Accounting SKU | sky-JKU40RDR |
| Manufacturer SKU | JKU40RDR |
| Manufacturer UPC | 803696260884 |
| Alternative References | JKU40RDR, SJA-JKU40RDR |
Coil Springs / Pair 4" Dual Rate Long Travel Rear Coil Springs 2007-2018 Jeep JK 4 Door
Skyjacker variable rate coil springs are designed with ride quality and performance in mind. Their selection offers your rig smooth cruising on the highway and support when you head off-road. Skyjacker variable rate coil springs feature a black powdercoated finish for added durability. Order the model designed for fitment on your vehicle application.
| Product Attributes | |
|---|---|
| Brand | Skyjacker Suspensions |
| Manufacturer's Part Number | JKU40RDR |
| Part Type | Coil Springs |
| Product Line | Skyjacker Variable Rate Coil Springs |
| UPC | 803696260884 |
| Ride Height | Lifted |
| Ride Height Note | Additional ride height information may be available for your vehicle, please refer to the app tab. |
| Spring Positioning | Rear |
| Rear Spring Raised Amount Range (in.) | 4.00 in. |
| Progressive Rate Spring | Yes |
| Spring Finish | Black |
| Bushings Included | No |
| Quantity | Sold as a pair. |
| Manufacturer Attributes | |
|---|---|
| Manufacturer Designation | 4 Inch Rear Coil Springs/Pair |
| Product Class | Coil Spring |
| Construction/Type | 4in. JK 4DR REAR DR COILS/PR |
| Product Outline | Dual-Rate Long Travel Maximum Articulation Matched To OEM Ride Superb Ride Lifetime Warranty |
| Vehicle Brief | 4in. JK 4DR REAR DR COILS/PR |
| Market Description | Rear Dual Rate Long Travel Coil Springs 4-Door Wrangler JK 4 in. Lift, Dual-rate Long Travel Coils maintain coil in bucket at full droop, Maximizes Articulation, Higher Strength Alloy over competitors prevents sagging, fractures and allows for powder coating, Matched to OEM Spring Rate for superb ride quality. |
Compatibility
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