RockJock's RockNut Billet Aluminum Johnny Joint Rear Upper Control Arm Set for the 2021-up Bronco provides you with extremely heavy duty, adjustable length control arms to replace your factory control arms.
Adjustable control arms are a must for aligning lifted vehicles to get your pinion angle specs. in check - and double adjustable arms make this job that much easier because neither end of the arm has to be removed from the vehicle for adjustment!
These arms are CNC machined from 7075-T6 aluminum, feature our patent pending RockNut locking nut technology and our 2 1/2 inch Johnny Joints with massive 1 1/4 inch RH and LH threads!
Arms are fully greasable, fully adjustable and feature machined-in wrench flats. Finished in clear anodize on the arms and gold zinc plating on the Johnny Joint ends.
Kit Fits:
- 2021-up Bronco - All Models
Kit Includes:
- Johnny Joint Billet Aluminum Rear Upper Control Arms (Pair)
Adjustment Range:
- Closed - 13.900 in.
- Extended - 16.000 in.
Notes:
- Factory hardware is retained to attach arms to the axle and the chassis.
- Gas tank must be lowered to access chassis bolt.
- Arms are fabricated from 1 5/8 in. solid 7075-T6 aluminum bar.
- RockNuts require a 1 3/4 in. wrench
- Wrench flats on the arms require a 1 1/2 in. wrench.
- Adjusters feature 1 1/4 in.-12 RH and LH threads.
- Johnny Joints require non-synthetic, hi-moly lube grease such as our CE-9013G
- Applicable Johnny Joint Tool for these Control Arms: CE-9110T
Parts List:
- RockNut (RH Thread): RJ-572201-1
- RockNut (LH Thread): RJ-572201-2
- Johnny Joint Adjuster End (RH Thread): CE-9114F
- Johnny Joint Adjuster End (LH Thread): CE-9114F-L
- Johnny Joint Rebuild Kit: CE-9110RK
- Johnny Joint Pivot Ball (Chassis Side): RJ-348004-1
- Johnny Joint Pivot Ball (Axle Side): RJ-348004-3
- Zerk Fitting: CE-1103K21
