Rock Jock 4x4 Johnny Joint® Adjustable Front Track Bar
RockJock's Johnny Joint Adjustable Length Front Trac Bar for the TJ, LJ, XJ, MJ and ZJ vehicles features a narrow body Johnny Joint rod end at the chassis end and a forged chromoly narrow Johnny Joint at the differential. Johnny Joints provide maximum articulation in extreme off-road situations. The 1 1/4 in. x .250 in. wall 4130 chromoly bar is offset at the chassis end Johnny Joint and incorporates precise bends in the interest of pushing the bar as far forward as possible to provide maximum clearance between large differentials and the bar itself.
Drilling is required to accommodate the supplied 5/8 in. frame hardware and 1/2 in. differential. Additional features include zerk fittings at both ends for greasing, gusseting of the Johnny Joint to the bar at the chassis end and a heavy duty flag nut at the differential end.
See notes for fitment parameters with regards to lift amounts!
Finish is semi-gloss black powder coat on the bar and gold zinc plating on the Johnny Joint adjuster end.
TJ Wrangler – All Models
TJ Wrangler Unlimited (LJ) – All Models
XJ Cherokee – All Models
MJ Comanche – All Models
ZJ Grand Cherokee – All Models
Johnny Joint Front Trac Bar Assembly
(2) Rubber Washers (outboard of the Johnny Joint at the differential end to encourage the bar to re-center itself after articulating)
Closed – 31.562 in.
Extended – 33.500 in.
Intended to be used with a minimum of 2 in. of lift
Under 2 in. lift with Dana 30 front ends – may work but minimal testing has been done
Under 2 in. lift with Dana 44 and 60 or 9 in. Ford style front ends – clearance issues are likely
Always test fit before drilling!
Drilling is required to accommodate the new, heavier duty hardware at the chassis and differential ends of this Trac Bar.
Bar is fabricated from 1.25 in. x .250 in. wall 4130 chromoly tubing.
Adjuster features 1 in.-14 RH threads.
Johnny Joints require non-synthetic, hi-moly lube grease such as our CE-9013G
Applicable Johnny Joint Tool (differential end): CE-9112T
Applicable Johnny Joint Tool (chassis end): CE-9110T
Complete Johnny Joint Adjuster End: RJ-305301-102
Johnny Joint Rebuild Kit (differential end): CE-9112NRK
Johnny Joint Rebuild Kit (chassis end): CE-9110NRK
Johnny Joint Pivot Ball (differential end): CE-91122-6
Johnny Joint Pivot Ball (chassis end): CE-91102TB1
5/8 in. x 5 in. Long Hex Bolt: CE-91257A833
5/8 in. Machined Washer: CE-9120W
5/8 in. Stover Nut: CE-H0032
1/2 in.-20 x 2 3/4 in. Long Hex Bolt: CE-91257A744
1/2 in. Flat Washer: CE-H0014
1/2 in.-20 Flag Nut: CE-9120NP
Rubber Washer: CE-9120RW
Zerk Fitting (either end): CE-1103K21