Silverback is a long-arm system for Gladiator owners who drive their truck every day and still want it to crawl. A high clearance 4-link front is paired with a triangulated 4-link rear that does away with the rear track bar, and the whole thing runs on service-free Adventure Series joints. This 4.5 inch version fits Sport, Overland and Mojave Gladiators.
What's in the kit
- 1 weld-on front long-arm mounting system
- 1 Heat Shield Products Sticky Shield kit
- 1 front adjustable anti-wobble track bar
- 2 high clearance adjustable front lower control arms
- 2 adjustable front upper control arms
- 1 Gen II front sway bar
- 2 triple-rate front coil springs
- 2 quad-rate rear coil springs
- 4 JT coil spring correction seats
- 2 rear high clearance adjustable lower control arms
- 2 rear adjustable upper 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
- High clearance 4-link front suspension with a triangulated 4-link rear for maximum articulation and control
- No rear track bar: rear triangulation centers the axle and smooths out highway handling
- Fully service-free long arms with Adventure Series joints: no grease, no noise
- Triple-rate front and quad-rate rear coils with JT coil spring correction seats
- Weld-on front long-arm mounting system and a Heat Shield Products Sticky Shield kit
- Bolt-on Pro-X rear cradle, with welding optional
Pick your package
- Base System (No Shocks): everything except shocks. Handy if you already own a shock package you like. Bump stops are included with the shock options only and can be bought on their own as RK07464.
- Bilstein 5100 Shocks: Bilstein 5100 shocks, maintenance free and matched by Rock Krawler to its multi-rate springs. Bump stops are in the box.
- Stage 1 (RRD 2.25 IFP Shocks): RRD 2.25 inch IFP shocks from Rock Krawler, built in house with a fluted hard anodized aluminum body that cools like a 2.5 inch shock, a 3/4 inch 17-4 PH stainless hard chrome shaft, billet valve components and dual DU bearings. Serviceable, rebuildable, revalveable. Bump stops included.
- Comp System Stage 1: a front coilover and rear coil spring combination. You get 2.625 inch RRD remote reservoir coilovers (13 inches of travel, 14.44 inches of front axle travel) and matching 2.625 inch RRD remote reservoir rear shocks (12 inches of travel, 15 inches of rear axle travel), along with quad-rate rear coils and spring correction seats. Rock Krawler positions it for trucks that still tow small trailers or carry small loads.
- Comp System Stage 2 (Fast CD): Comp System hardware with Fast CD (compression damping) adjusters up front and in the rear, good for up to 30% more compression damping with infinite settings.
- Trail Runner Stage 1: four coilovers, 2.625 inch RRD remote reservoir units. It gives the Gladiator the most off-road ability Rock Krawler offers in this system and is tuned for the street, though Rock Krawler cautions against towing or loading the bed heavily with rear coilovers.
- Trail Runner Stage 2 (Fast CD): Trail Runner plus Fast CD adjusters on the coilovers, so you can tune compression damping.
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)
- Welding the rear cradle is recommended for 37 inch tires and larger
- Long arm install requires welding of the front long arm mounting system; removal of the OEM frame side lower front control arm mounts; removal of the OEM frame side front upper control arm mounts; removal of the OEM axle side track bar mount
- 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: 3-4 weeks for long 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.
