Rock Krawler 4.5 Inch PRO-X Mid Arm System - Gladiator JT
Rock Krawler 4.5 Inch PRO-X Mid Arm System - Gladiator JT - Comp System and Trail Runner coilover packages

Rock Krawler 4.5 Inch PRO-X Mid Arm System - Gladiator JT

JT45PX

Regular price$3,591.99
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Shipping calculated at checkout.

Package

PRO-X starts with the X-Factor family of eight adjustable arms and adds the triangulated rear that gives the PRO name. At 4.5 inches on a Sport, Overland or Mojave Gladiator, that means a bolt-in kit with 95 degrees of misalignment from the X-Factor arms and a rear axle that is centered by triangulation instead of a track bar.

What's in the kit

  • 4 coil springs (triple-rate front, quad-rate rear)
  • 2 front adjustable high clearance lower control arms
  • 2 front adjustable upper control arms
  • 2 front spring pads
  • 1 adjustable front track bar
  • 2 Gen-II front sway bar links
  • 2 rear adjustable high clearance lower control arms
  • 2 rear spring pads
  • 2 adjustable rear sway bar links
  • 1 rear bolt-on Pro-X cradle (welding optional)

Shocks depend on the package you pick. Bump stops come with every shock option. Coilover packages add the shock towers and brackets they need.

Why this system

  • X-Factor adjustable upper and lower arms deliver 95 degrees of total misalignment when paired with Pro-X Krawler joints at the axle and Adventure Series joints at the frame
  • Rear bolt-in triangulated upper control arms center the axle, allow removal of the rear track bar and remove rear suspension bind
  • Rear Pro-X cradle bolts on, with welding optional
  • Adjustable arms for caster and pinion angle front and rear
  • Triple-rate front and quad-rate rear coils, plus spring correction pads
  • Gen-II front sway bar links

Pick your package

  • Base System (No Shocks): the lift hardware only, no shocks. Pick this if you are supplying your own shocks. Bump stops ship with each shock option, and with no shocks they can be bought separately as RK07464.
  • Bilstein 5100 Shocks: the Bilstein 5100 package, a maintenance-free option Rock Krawler says works well with its multi-rate coils. Bump stops are included.
  • Stage 1 (RRD 2.25 IFP Shocks): the in-house RRD 2.25 inch IFP shock: military grade hard anodized fluted aluminum body (cooling surface of a 2.5 inch shock), a 3/4 inch 17-4 PH stainless shaft with hard chrome plating, billet aluminum valve circuit, dual DU shaft bearings and redundant sealing. They can be serviced, rebuilt and revalved. Bump stops included.
  • Comp System Stage 1: front coilovers with a rear coil spring. Up front are 2.625 inch RRD remote reservoir coilovers (13 inches of travel for 14.44 inches of axle travel), paired with 2.625 inch RRD remote reservoir rear shocks (12 inches of travel for 15 inches of axle travel). A fit for trucks that still haul small loads or pull small trailers. Includes the rear quad-rate coils and spring correction seats.
  • Comp System Stage 2 (Fast CD): same Comp System layout plus Fast CD adjusters on the front coilovers and rear shocks, which add up to 30% more compression damping with infinite settings.
  • Trail Runner Stage 1: a coilover at every corner using 2.625 inch RRD remote reservoir coilovers. Rock Krawler says this gives the most off-road ability and a well-tuned street ride; the tradeoff is that rear coilovers do not like changing loads, so heavy bed loads and towing are not ideal.
  • Trail Runner Stage 2 (Fast CD): the Trail Runner layout with Fast CD compression damping adjusters on the coilovers.

Fitment and what else you'll need

  • Fits the 2020+ Jeep Gladiator JT, 4 door, 4WD, Sport, Overland and Mojave trim levels. Engine: 3.6L Pentastar V6 (gas models)
  • Rock Krawler wheel guidance: Sport and Overland, 3.5 inches of backspacing with 37/38 inch tires; Mojave, 4.5 inches with 37 inch tires or 3.5 inches with 40 inch tires
  • Tire guidance (3 inch bump stop height recommended): Sport and Overland, 37 inch tall with full OEM fenders or 38 inch with trimmed or high-lined fenders; Mojave, 37/38 inch tall with full fenders or 40 inch with trimmed or high-lined fenders
  • Lift height is figured on a Rubicon with a standard build (front bumper and winch, rear bumper, full size spare). Delete the spare and Rock Krawler suggests dropping 1 inch in rear coil lift height; load up the rear overland-style and they suggest going up 1 inch
  • Rock Krawler recommends a new front driveshaft if you plan to off-road routinely (they name Adam's Driveshaft, Tom Woods and J.E. Reel)
  • Running a Dynatrac XD60 or Ultimate Dana 60 rear axle? Rock Krawler offers the optional Pro-X cradle: RK08078 for the Dynatrac XD60, RK08068 for the Ultimate Dana 60
  • Coilover packages (Comp System and Trail Runner) require removal of the OEM frame shock mount and the OEM shock and spring mount on the axle, plus welding of the new coilover mount to the axle only

Rock Krawler's posted lead time when we listed this kit: 1-2 weeks for mid arm kits, counted in business days from order. Coilover packages are posted at 3-4 weeks.

Rock Krawler lists lifetime warranty coverage on its Gladiator JT systems. The RRD shocks carry their own 6-month warranty against defects in materials and workmanship.

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