Skyjacker 21-23 Jeep Wrangler Unl. Rubicon 392 Component Box w/Front Dual Rate Long Travel Coils

Known for their phenomenal spring ride performance, Skyjackers precision engineering gives you all the vigorous off-road handling needed while providing the smooth street riding characteristics that you demand. Skyjacker specifically engineered a progressive variable rate coil spring, distinctively a 2-stage dual rate long travel coil. Spring rate progression is from a first Flex Rate to a second Ride Rate. First Flex Rate stage of coil spring delivers a comfortable ride with ability to flex\expand during full articulation as suspension drops (full droop). This keeps coil springs seated in upper coil mount\bucket and tires in contact with terrain. Second Ride Rate stage only engages after compression past Flex Rate. The process starts with 5160H chromium alloy material, an advanced method of shot peening and a presetting process. Each coil spring is blasted (shot peen) with hard steel pellets at very high velocities. Shot peening compresses the surface of the steel thereby increasing the tensile strength of the spring. Compressing the spring completely down to where the coils touch (solid height) is preset. This takes any fatigue or stress off the spring and eliminates sagging. Every coil spring has endured a cycle test to assure the very best in quality. A baked on powder coat provides an extremely durable protective barrier to prevent corrosion.

Additional Information

4.5in.FRT COILS PR JL RUB 392

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
	skyJL45R3KELT	Skyjacker 4.5 in. Suspension Lift System 21-23 Jeep Wrangler Unlimited Rubicon 392 (1x skyJL24LL, 1x skyJLUR453FDR, 1x skyJLUR403RDR, 1x skyJL45R3ELT)
	skyJL45R3BKXMLT	Skyjacker 21-25 Jeep Wrangler Jl Unlmtd Rubicon 392 4.5 In Susp Lift Kit With ADX M2.0 Alum Shocks (1x skyJL3540XM, 1x skyJL45R3BLT, 1x skyJL24LL, 1x skyJLUR453FDR, 1x skyJLUR403RDR)

• Allows Full Articulation As Suspension Drops [Full Droop]
• Delivers A Comfortable Ride Flex For increased Articulation
• Flex Stage\Ride Stage Dual Rate Long Travel Coil Springs

Note regarding Rubicon badged vehicles.

Rubicon badging/decals alone do not confirm Rubicon specification, as some vehicles may have aftermarket or dealer-added decals. Please confirm your vehicle’s VIN/trim and Rubicon-specific hardware before ordering, especially for suspension, steering, axle, driveline, bumper and underbody parts.

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.

Product Details

Reference Information

Coil Spring, 4.5"FRT COILS PR JL RUB 392