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Most Popular Jlu 4.5 Inch X Factor Pro Elite "no Limits" Aluminum Coil Over System W/ Pb+j Lower Mid Arms 392 Model Satisfaction Guaranteed [N7g9F3pa]

$80.99 $259.99 -69%

The Rock Krawler 4.5" X-Factor PRO ELITE Coilover "No Limits" Mid-Arm 392 System is specifically designed for Rubicon owners who want a complete system, bolt-in installation, and the best articulation of any MID-ARM kit on the market. The lower contr

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Most Popular Jlu 4.5 Inch X Factor Pro Elite "no Limits" Aluminum Coil Over System W/ Pb+j Lower Mid Arms 392 Model Satisfaction Guaranteed [N7g9F3pa]

The Rock Krawler 4.5" X-Factor PRO ELITE Coilover "No Limits" Mid-Arm 392 System is specifically designed for Rubicon 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” x 3” billet 7075 Aluminum. All 4 other control arms are machined from round 7075 Aluminum and come with the benefits of X-Factor built 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 “No Limits” front sway bar end links pair amazingly well with the factory Rubicon E Disconnect ensuring bind free suspension travel in the roughest of terrains. All Rock Krawler JLU systems include correction pads that reduce the spring bow inherent in the factory set up. 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.

What Our Customers Say

January 16, 2026

Absolutely no complaints!

I am overjoyed with this superb product.

- Mia H..

January 16, 2026

Absolutely no complaints!

An outstanding gadget. It is very, very powerful.

- Jakob D..

January 16, 2026

Absolutely no complaints!

This is a high-quality, and an excellent product.

- Anita G..

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