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Skyjacker 2007-2018 Jeep Wrangler JK 4 Door 4WD (Unlimited) Long Travel 4in Rear Coil Spring Set

SKU: SKYJKU40RDR

Coil Springs

SKY Coil Springs...

Skyjacker 2007-2018 Jeep Wrangler JK 4 Door 4WD (Unlimited) Long Travel 4in Rear Coil Spring Set

SKU: SKYJKU40RDR

Coil Springs

SKY Coil Springs...

A$599.52
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

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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

Data: v4.2 - Upd: 2026-11-09 11:15:12

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
BrandSkyjacker Suspensions
Manufacturer's Part NumberJKU40RDR
Part TypeCoil Springs
Product LineSkyjacker Variable Rate Coil Springs
UPC803696260884
Ride HeightLifted
Ride Height NoteAdditional ride height information may be available for your vehicle, please refer to the app tab.
Spring PositioningRear
Rear Spring Raised Amount Range (in.)4.00 in.
Progressive Rate SpringYes
Spring FinishBlack
Bushings IncludedNo
QuantitySold 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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