Rear Frame UCA 3-Link Bracket for Jeep Wrangler JKU 2007-2018
This bracket is the frame-side foundation of a rear 3-link conversion on a four-door Jeep Wrangler JKU (2007-2018). It welds into the frame between the two factory crossmembers and mounts a single upper control arm above the driveshaft, replacing the factory dual-upper layout that binds at full flex. The boxed 3/16" steel construction shrugs off rock strikes, an integrated skid shields the joint itself, and a top-access grease fitting provision keeps maintenance simple once everything is buried under the truck. If you are chasing more rear articulation on a JKU crawler, this is where the conversion starts.
Features
- 3/16" boxed steel plate construction for strength and impact resistance
- CNC laser cut and CNC bent for precise fit-up, made in the USA
- Positions a single upper control arm above the driveshaft, between the factory crossmembers
- Integrated skid plate protects the joint from trail strikes
- Top-access grease fitting provision for easy joint service
- Sized for RockKrawler Krawler joints with 2.325" mounting width and 9/16" bolt hole
- Weld-in design for a permanent, high-strength mount
Built for the 4-door JKU and requires roughly 1" of lift for driveshaft clearance; it is designed around the RockKrawler X-Factor rear 3-link upper arm's joint dimensions, so verify your upper arm measures 2.325" wide with a 9/16" bolt hole before ordering. Professional welding is required, and the bare steel needs paint after weld-in. Finish the axle side with the JK Rear 3-Link Bracket or JK Rear UCA Brackets, and see aluminum links like the JK Aluminum Mid Arm Kit - Rear Only in our frame brackets collection.
Specifications
Rear Frame UCA 3-Link Bracket for Jeep Wrangler JKU 2007-2018 FAQs
Which upper control arms work with this bracket?
It is built around RockKrawler Krawler joints measuring 2.325" mounting width with a 9/16" bolt hole, as used on the RockKrawler X-Factor rear 3-link upper control arm. Measure your upper arm's joint before ordering — other joint widths will not fit the bracket correctly.
Is this a bolt-on part?
No. It is a weld-in bracket that boxes into the frame between the two factory rear crossmembers, so professional welding is required. It ships as bare steel and should be painted or coated after the weld-in is complete.
Do I need a lift to run it?
Yes, roughly 1" of lift is required for proper clearance, since the bracket positions the upper control arm directly above the rear driveshaft. It is intended for the 4-door JKU; confirm packaging on your build before committing to the conversion.
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