4.5 Inch X-Factor Pro Elite Coilover Mid-Arm Suspension System for Jeep Wrangler JLU Gas Models Comp Stage 1 Rock Krawler

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Rock Krawler

SKU:JL45XFPE-4CS

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Rock Krawler 4.5 X-Factor Pro Elite Coilover Mid-Arm System for Jeep Wrangler JLU (Gas Models)

The Rock Krawler 4.5 X-Factor Pro Elite Coilover Mid-Arm System is specifically designed for Sport and Sahara owners who want a complete system, bolt-in installation, and the best articulation of any mid-arm kit on the market. The lower control arms are our signature PB+J (Pure Beef and Jealousy) mid-arms machined from 2 inch x 3 inch billet 7075 Aluminum.

All 4 other control arms are machined from round 7075 Aluminum and come with the benefits of X-Factorbuilt right in. Our system proves its durability and off-road performance every time you hit the streets or trail!

Our industry-leading, X-Factor Series, adjustable upper and lower control arms offer a total of 95 degrees of misalignment when paired with our Pro-X Krawler Joints and Adventure Series joints. The inherent bind in a factory JLU control arm is greatly reduced.

Our maintenance-free Adventure Series joints are found in your front and rear control arms at the frame connection, while our PRO Krawler Joints tie in your axle connections. With so much adjustability, it allows you to precision tune the JLU's caster and pinion angle front and rear.

The Gen 2 front sway bar disconnects allow you to maximize axle travel when you need it quickly and easily. All Rock Krawler JLU systems include correction pads that reduce the spring bow inherent in the factory setup.

The provided track bar geometry corrections, both front and rear, letting you perfectly center the axles so there is no compromise in on-road handling.

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.

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 and Handling The Best Off-Road Ability of All Mid-Arm Systems
  • Improved Rear Roll Center 14.4 inch of Front Axle Travel Up to 13.9 inch of Rear Axle Travel Triple-rate Rear Coils
  • Spring Correction Seats
  • Vehicle Lean Correction
  • Upgradable to RK Long-Arm System
  • Best Technical Support in the Industry
  • Jeep Remains Level on All 4 Corners
  • Lifetime Warranty Coverage

System Includes:

  • (2) Rear Triple-rate Coil Springs
  • (2) Front Billet 7075 Aluminum Adjustable Lower Control Arms
  • (2) Front 7075 Aluminum Adjustable Upper Control Arms
  • (1) Adjustable Front Track Bar
  • (2) Gen-II Sway Bar Links
  • (2) Rear Billet 7075 Aluminum Adjustable Lower Control Arms
  • (2) Rear 7075 Aluminum Adjustable Upper Control Arms
  • (2) Adjustable Rear Sway Bar Links
  • (1) Bolt-on Rear Track Bar Relocation Bracket
  • (1) Rear Adjustable Track Bar
  • (2) Rear Spring Correction Seats
  • (Depending on shock package chosen) Shock Towers and Brackets

Shock Information:

  • All RRD Shocks and Coilovers are designed and built in-house
  • Comp System Stage 1 (Coilover Front/Coil Spring Rear) 13 Travel Front RRD 2.625 RR Coilover Shocks Yielding 14.4 of Front Axle Travel 12.5 Travel Rear RRD 2.625 RR Shocks Yielding 13.9 of Rear Axle Travel
  • Comp System Stage 2 (Coilover Front/Coil Spring Rear) W/Fast CD Adjustable Shocks 13 Travel Front RRD 2.625 FCD Coilover Shocks Yielding 14.4 of Front Axle Travel 12.5 Travel Rear RRD 2.625 FCD Shocks Yielding 13.9 of Rear 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 extended off-road and expedition travel or heavily upfitted build in the back, we recommend upsizing 1 inch in coil lift height for the rear.
  • We recommend a new front driveshaft if you plan to off-road routinely.
  • (Adam's Driveshaft, Tom Woods, J.E. Reel) We recommend welding the rear cradle for use with 37 tires and above.
  • Requires removal of the OEM shock mount of frame Requires removal of the OEM shock and spring mount of the axle Requires welding of the new coilover mount on the axle only
CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Vehicle Fitment

Year Make Model Trim
2020–2022 Jeep Wrangler Unlimited Sahara
2020–2022 Jeep Wrangler Unlimited Rubicon
2020–2022 Jeep Wrangler Unlimited Sport S
2020–2022 Jeep Wrangler Unlimited Sport
2021 Jeep Wrangler Unlimited Freedom
2021 Jeep Wrangler Unlimited Islander
2021 Jeep Wrangler Unlimited 80th Anniversary
2021–2022 Jeep Wrangler Unlimited High Altitude 4xe
2021–2022 Jeep Wrangler Unlimited Rubicon 392
2021–2022 Jeep Wrangler Unlimited Rubicon 4xe
2021–2022 Jeep Wrangler Unlimited Sahara Altitude
2021–2022 Jeep Wrangler Unlimited Sahara 4xe
2021–2022 Jeep Wrangler Unlimited High Altitude
2021–2022 Jeep Wrangler Unlimited Sport Altitude
2021–2022 Jeep Wrangler Unlimited Willys
2021–2022 Jeep Wrangler Unlimited Willys Sport
2022 Jeep Wrangler Unlimited High Tide
2023 Jeep Wrangler Freedom
2023 Jeep Wrangler High Altitude
2023 Jeep Wrangler High Tide
2023 Jeep Wrangler Sahara Altitude
2023 Jeep Wrangler Sport Altitude
2023–2024 Jeep Wrangler Rubicon 392
2023–2024 Jeep Wrangler Willys Sport
2023–2025 Jeep Wrangler Willys 4xe
2023–2025 Jeep Wrangler Rubicon 4xe
2023–2025 Jeep Wrangler High Altitude 4xe
2023–2025 Jeep Wrangler Sahara 4xe
2023–2026 Jeep Wrangler Willys
2023–2026 Jeep Wrangler Rubicon
2023–2026 Jeep Wrangler Sahara
2023–2026 Jeep Wrangler Sport
2023–2026 Jeep Wrangler Sport S
2024–2025 Jeep Wrangler Rubicon X 4xe
2024–2025 Jeep Wrangler Sport S 4xe
2024–2025 Jeep Wrangler Rubicon 392 Final Edition
2024–2026 Jeep Wrangler Rubicon X
2026 Jeep Wrangler Rubicon 392