4.5 Inch T-REX Pro Elite Coilover Suspension System for Jeep Wrangler JLU 4XE Models Trail Runner System Stage 2 Rock Krawler

Rock Krawler 4.5 t-rex Elite Pro Coilover Suspension System for Jeep Wrangler JLU (4XE Models)

The Rock Krawler Suspension T-Rex Hybrid Long-arm Systems are the absolute best combination of on-road ride/handling and off-road ability you can get for your Wrangler JLU 4XE Door when keeping the gas tank in the stock location. Don't shoot the messenger here, but Jeep made it extremely difficult to do a full long-arm front suspension design with all the 4XE cooling and trunk lines running from front to back of the 4XE right where the long-arm mounts should go.

Very few people are qualified to alter the high voltage trunk lines used to power the hybrid power train. It is very risky business.

We promise it was not our idea! This vary fact is what made us create the Hybrid T-Rex System.

The T-Rex is a full high clearance mid-arm front setup with our tried and true ultra high clearance 3 link rear conversion. This gives you the absolute best possible combination to enhance your 4XE Wrangler Off-Road.

The rear suspension geometry being a parallel 4 link with a track bar (i.e. 5 link rear) is really where the lack luster performance comes into play. This suspension arrangement naturally binds causing jacking when being tasked to perform off road.

The Rock Krawler ultra high clearance 3 link with track bar removes the natural binding of stock rear suspension 100 percent allowing for ultra smooth suspension motion in the rear without jacking. A night and day difference.

You also get the benefit of X2 rear suspension geometry gaining 4.5 inch of ground clearance under the rear axle without losing a single centimeter of rear shock travel! The rear roll center is raised significantly to further enhance handling and reduce side to side axle shifting while off-road.

Make no compromise suspension geometry wise is our motto and T-Rex is no exception. All T-Rex control arms feature our exceptionally proven Adventure Series joints for years of maintenance-free use!

The PRO Elite signifies you are entering the realm of PB&J (Pure Beef AND Jealousy) by purchasing a system that is outfitted with 4 Billet Aluminum CNC Machined Service Free lower control arms in a long arm length! This is as good as it gets; absolute strength, paired with a maintenance-free peace of mind will have you blasting down any trail in America! The T-Rex is a full mid-arm front setup with our tried and true ultra 3 link long-arm rear conversion.

The Comp System (Front Coilovers w/Rear Coil Combination) is ideal for those that want the adjustability and performance of coilover racing shocks up front, but still want to use their Wrangler to carry small loads or tow small trailers. There are two options for the Comp Systems you can choose from.

The standard or Stage 1 System features 2 5/8 RRD Racing Coilovers w/Remote Reservoirs up front paired with matching 2 5/8 RRD Racing Shocks w/Remote Reservoirs in the rear for a well tuned package. Or you can opt for the Stage 2 Comp System which will include Fast CD (Compression Dampening) Adjusters on the coilovers and rear shocks for an even greater level of tuneability.

The Trail Runner System (Front and Rear Coilover Combination) is ideal for those that want the adjustability and performance of coilover racing shocks at all 4 corners. This combination maximizes the off road ability of your Wrangler and comes well tuned for the street.

Rear coilovers perform amazing off road, but do not take changes in loading conditions too well so towing or adding a lot of weight to the bed area is not optimal for rear coilovers. The standard or Stage 1 System features 2 5/8 RRD Racing Coilovers w/Remote Reservoirs front and for a well tuned package.

Or you can opt for the Stage 2 Trail Runner System which will include Fast CD (Compression Dampening) Adjusters on the coilovers for an even greater level of tuneability.

Like all of our systems, amazingly tuned ride and handling is our number one priority! It is no different with our coilover systems.

Coilovers add another level of tuneability for the vehicle owner to further enhance the ride, handling and off road performance to their liking. Install exceptional value, and be the foundation for every adventure whether it be on the Street or on the Trail with a Rock Krawler Coilover Suspension System!

Thank you for considering Rock Krawler Suspension.

System Benefits:

• Excellent Highway Ride & Off-Road Ability
• Maintenance Free/High Ability Control Arms Featuring our Award Winning Adventure Series joints
• Full High Clearance Design 4 Link Mid-arm Front Suspension 3 Link Long-arm Rear Suspension
• 4.5 Rear Clearance Gain from the X2 Axle Bracket System
• Adjustable Rear Anti-Squat Featuring X2 Geometry
• Designed to be the Ultimate Compromise between On Highway Handling and Hard Core Off-Road Ability
• Lifetime Warranty Coverage

System Includes:

• (1) Front Adjustable Anti-wobble Track Bar
• (1) Front Sway Bar Disconnect Kit
• (2) Front Billet 7075 Aluminum Adjustable Lower Control Arm
• (2) Front Adjustable Upper Control Arm
• (2) Rear Billet 7075 Aluminum Lower Long-Arms
• (2) Rear Extended Sway Bar Links
• (1) Rear Upper Control Arm
• (2) Rear Lower Control Arm
• (1) Rear Long-arm Mount Kit
• (1) Rear Upper Frame Mount
• (1) Rear Track Bar Mount
• (1) Rear Adjustable Track Bar
• (1) Rear Axle Truss
• (1) Rear Brake Line Mount Kit
• (2) Rear Shock Mount
• (Depending on shock package chosen)
• (1) Front Shock Mount Kit
• (2) Triple-rate Coil Springs in Comp System
• (2) Spring Correction Seats in Comp System

Shock Information:

• All RRD Shocks and Coilovers are designed and built in-house
• Comp System Stage 1 (Coilover Front/Coil Spring Rear) 13 inch Travel Front RRD 2.625 RR Coilover Shocks Yielding 14.4 inch of Front Axle Travel 12.5 inch Travel Rear RRD 2.625 RR Shocks Yielding 13.9 inch of Rear Axle Travel
• Comp System Stage 2 (Coilover Front/Coil Spring Rear) W/Fast CD Adjustable Shocks 13 inch Travel Front RRD 2.625 FCD Coilover Shocks Yielding 14.4 inch of Front Axle Travel 12.5 inch Travel Rear RRD 2.625 FCD Shocks Yielding 13.9 inch of Rear Axle Travel Trail Runner System Stage 1 (Coilovers Front and Rear) 13 inch Travel Front RRD 2.625 RR Coilover Shocks Yielding 14.4 inch of Front Axle Travel 12 inch Travel Rear RRD 2.625 RR Coilover Shocks Yielding 13.3 inch of Front Axle Travel Trail Runner System Stage 2 (Coilovers Front & Rear) W/Fast CD Adjustable Shocks 13 inch Travel Front RRD 2.625 FCD Coilover Shocks Yielding 14.4 inch of Front Axle Travel 12 inch Travel Front RRD 2.625 FCD Coilover Shocks Yielding 13.3 inch of Front Axle Travel

Wheel Fitment:

• Sport and Sahara Wheel Fitment Recommendations 37 inch/38 inch Tall Tires - Recommend 3.5 inch of Back Spacing
• Rubicon Fitment Recommendations 37 inch Tall Tires - Recommend 4.5 inch of Back Spacing 40 inch Tall Tires - Recommend 3.5 inch of Back Spacing

Tire Fitment:

• Sport and Sahara with
• Full OEM Fenders 37 inch Tall Tires (3 inch Bump Stop Height Recommended)
• Sport and Sahara with Trimmed or High Lined OEM Fenders 38 inch Tall Tires (3 inch Bump Stop Height Recommended)
• Rubicon
• Full OEM Fenders 37 inch/38 inch Tall Tires (3 inch Bump Stop Height Recommended)
• Rubicon OEM Fenders Trimmed or High Lined 40 inch Tall Tires (3 inch Bump Stop Height Recommended)

General Notes:

• All lift heights based on Rubicon models for standard style build (i.e., front bumper and winch, rear bumper and full-size spare.
• If building with a spare delete, we recommend dropping 1 inch in coil lift height for the rear.
• If building an overland or heavily upfitted build in the back, we recommend upsizing 1 inch in coil lift height for the rear.
• Recommend a new front C.V. Driveshaft for all front shocks with max.
• Extended length greater than 29 Requires welding of the Rear Long Arm Mounts Requires removal of the OEM frame side upper/lower rear control arm mounts Requires removal of the OEM axle side rear lower control arm and track bar mounts Requires modifying the OEM front/rear shock mounts and welding of the raised upper shock mounts Recommend installing limiting straps to avoid over extension of suspension components after vehicle is all set up