{"product_id":"rock-krawler-3-0-inch-silverback-long-arm-system-2020-gladiator-jt","title":"Rock Krawler 3.0 Inch Silverback Long Arm System - 2020+ Gladiator JT","description":"\u003cp\u003eSilverback is Rock Krawler's long arm answer for a Gladiator that gets driven every day and wheeled hard. The front is a high-clearance 4-link and the rear is a triangulated 4-link, so there is no rear track bar to bind up or fight the front. The control arms are service-free Adventure Series units, and the kit comes with a weld-on front long arm mounting system. This is the 3.0 inch version, and the shock package you pick decides whether it rides on shocks or coilovers.\u003c\/p\u003e\u003ch3\u003eWhat's in the kit\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e(1) Weld-on front long-arm mounting system\u003c\/li\u003e\n\u003cli\u003e(1) Heat Shield Products Sticky Shield kit\u003c\/li\u003e\n\u003cli\u003e(1) Front adjustable anti-wobble track bar\u003c\/li\u003e\n\u003cli\u003e(2) High clearance adjustable front lower control arms\u003c\/li\u003e\n\u003cli\u003e(2) Adjustable front upper control arms\u003c\/li\u003e\n\u003cli\u003e(1) Gen II front sway bar\u003c\/li\u003e\n\u003cli\u003e(2) Triple-rate front coil springs\u003c\/li\u003e\n\u003cli\u003e(2) Quad-rate rear coil springs\u003c\/li\u003e\n\u003cli\u003e(4) JT coil spring correction seats\u003c\/li\u003e\n\u003cli\u003e(2) Weld-on rear frame side long-arm mounts\u003c\/li\u003e\n\u003cli\u003e(2) Rear high clearance adjustable lower control arms\u003c\/li\u003e\n\u003cli\u003e(2) Rear adjustable upper control arms\u003c\/li\u003e\n\u003cli\u003e(2) Rear spring pads\u003c\/li\u003e\n\u003cli\u003e(2) Adjustable rear sway bar links\u003c\/li\u003e\n\u003cli\u003e(1) Rear bolt on Pro-X cradle (welding optional)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eShocks (or coilovers) depend on the package you pick below. The coilover pages list shock towers and brackets under the shock packages, and list the rear quad-rate coil springs and spring correction seats under the Comp System packages. Bump stops come with every shock package; if you go with no shocks they are ordered separately (Rock Krawler part RK07464).\u003c\/p\u003e\u003ch3\u003eWhy this system\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLong arm geometry: a high-clearance 4-link front and a triangulated 4-link rear. The rear triangulation removes the rear track bar entirely for smoother highway handling and better axle centering.\u003c\/li\u003e\n\u003cli\u003eFully service-free long arms with Adventure Series joints that isolate road vibration like an OE bushing, with high misalignment and no grease. The control arms are fully adjustable for caster and pinion angle.\u003c\/li\u003e\n\u003cli\u003eTriple-rate front and quad-rate rear coil springs with the free length to keep spring seat contact under extreme flex (on the coilover packages, see the notes below).\u003c\/li\u003e\n\u003cli\u003eCoil correction seats cut spring bow, and the front end gets an adjustable anti-wobble track bar.\u003c\/li\u003e\n\u003cli\u003eA Heat Shield Products Sticky Shield kit and a rear bolt-on Pro-X cradle (welding optional) are in the box.\u003c\/li\u003e\n\u003cli\u003eLifetime warranty coverage, as listed by Rock Krawler.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePick your package\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase System (No Shocks).\u003c\/strong\u003e The kit as listed above with no shocks, for the builder who already has shocks picked out. Bump stops come with every shock package; if you go with no shocks they are ordered separately (Rock Krawler part RK07464).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBilstein 5100 Shocks.\u003c\/strong\u003e The kit plus a set of Bilstein 5100 shocks. Rock Krawler calls them maintenance free and a great pairing with its multi-rate coil springs. Rock Krawler's Bilstein package number for the 2.0 and 3.0 inch lifts is RRD04058-B51.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 1 (RRD 2.25 IFP Shocks).\u003c\/strong\u003e Rock Krawler's in-house shock: a 2.25 inch O.D. military grade hard anodized fluted aluminum body with the cooling surface area of a 2.5 inch shock, a 3\/4 inch 17-4 PH stainless steel hard chrome plated and polished shaft, a billet aluminum valve circuit, dual DU shaft bearings and double redundant sealing. Serviceable, rebuildable and revalveable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoilover Comp System, Stage 1.\u003c\/strong\u003e Coilovers up front with coil springs and a shock in the rear. Rock Krawler lists 2.625 inch RRD racing coilovers with remote reservoirs up front (12 inches of travel, about 13.3 inches of front axle travel) and matching 2.625 inch RRD racing shocks with remote reservoirs in the rear (10.5 inches of travel, about 13.1 inches of rear axle travel). It is aimed at owners who want coilover adjustability but still carry small loads or tow small trailers. Adds shock towers and brackets, quad-rate rear coil springs and spring correction seats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoilover Comp System, Stage 2 (Fast CD).\u003c\/strong\u003e The same Comp System layout and travel as Stage 1, with Fast CD (compression damping) adjusters on the front coilovers and the rear shocks for more tuning range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoilover Trail Runner, Stage 1.\u003c\/strong\u003e Coilovers at all four corners: 2.625 inch RRD racing coilovers with remote reservoirs front and rear (12 inches of travel up front, about 13.3 inches of front axle travel; 11 inches of travel in the rear, up to 13.75 inches of rear axle travel). Rock Krawler notes that rear coilovers do not take changes in load well, so towing or hauling a lot of weight in the bed is not ideal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoilover Trail Runner, Stage 2 (Fast CD).\u003c\/strong\u003e The Trail Runner layout with Fast CD (compression damping) adjusters on the coilovers for even more tuneability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment and what else you'll need\u003c\/h3\u003e\u003cp\u003eFits the 2020 and newer Jeep Gladiator JT (4-door) in Sport, Overland and Mojave trims. Listed for the 3.6L Pentastar V6 gas Gladiator.\u003c\/p\u003e\u003cp\u003eRock Krawler bases its lift heights on Rubicon models in a standard build (front bumper and winch, rear bumper and full-size spare). For an overland style or heavily up-fitted rear end, go up 1 inch of rear coil lift height.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSport and Overland wheel fitment recommendations: 37\/38 inch tall tires - recommend 3.5 inches of back spacing\u003c\/li\u003e\n\u003cli\u003eMojave fitment recommendations: 37 inch tall tires - recommend 4.5 inches of back spacing; 40 inch tall tires - recommend 3.5 inches of back spacing\u003c\/li\u003e\n\u003cli\u003eSport and Overland with full OEM fenders: 37 inch tall tires (3 inch bump stop height recommended)\u003c\/li\u003e\n\u003cli\u003eSport and Overland with trimmed or high lined OEM fenders: 38 inch tall tires (3 inch bump stop height recommended)\u003c\/li\u003e\n\u003cli\u003eMojave with full OEM fenders: 37\/38 inch tall tires (3 inch bump stop height recommended)\u003c\/li\u003e\n\u003cli\u003eMojave with trimmed or high lined OEM fenders: 40 inch tall tires (3 inch bump stop height recommended)\u003c\/li\u003e\n\u003cli\u003eIf you source your own shocks, Rock Krawler's generic lengths are 17.5 inches collapsed to 29.5 inches extended up front and 17 inches collapsed to 28 inches extended in the rear.\u003c\/li\u003e\n\u003cli\u003eRock Krawler recommends a new front driveshaft if you plan to off-road routinely (Adam's Driveshaft, Tom Woods, J.E. Reel).\u003c\/li\u003e\n\u003cli\u003eAn optional Pro-X cradle is available for Dynatrac XD60 rear axles (Rock Krawler part RK08078) and for Ultimate Dana 60 and Currie low pinion 60 rear axles (RK08068). Fusion makes its own trusses, so order theirs with the axle and remove Rock Krawler's supplied truss from the order.\u003c\/li\u003e\n\u003cli\u003eRock Krawler recommends welding the rear cradle for use with 37 inch tires and above.\u003c\/li\u003e\n\u003cli\u003eRequires welding of the front long arm mounting system.\u003c\/li\u003e\n\u003cli\u003eRequires removal of the OEM frame side lower front control arm mounts.\u003c\/li\u003e\n\u003cli\u003eRequires removal of the OEM frame side front upper control arm mounts.\u003c\/li\u003e\n\u003cli\u003eRequires removal of the OEM axle side track bar mount.\u003c\/li\u003e\n\u003cli\u003eRock Krawler recommends installing limiting straps to avoid over extension of suspension components after vehicle is all set up.\u003c\/li\u003e\n\u003cli\u003eCoilover packages: requires removal of the OEM shock mount of frame.\u003c\/li\u003e\n\u003cli\u003eCoilover packages: requires removal of the OEM shock and spring mount of the axle.\u003c\/li\u003e\n\u003cli\u003eCoilover packages: requires welding of the new coilover mount on the axle only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRock Krawler lists lifetime warranty coverage on this system. Its RRD shocks carry a 6-month warranty against defects in materials and workmanship.\u003c\/p\u003e","brand":"Rock Krawler","offers":[{"title":"Base System (No Shocks)","offer_id":45517407584322,"sku":"JT30SB2","price":4286.99,"currency_code":"USD","in_stock":true},{"title":"Bilstein 5100 Shocks","offer_id":45517407617090,"sku":"JT30SB2-B51","price":4888.99,"currency_code":"USD","in_stock":true},{"title":"Stage 1 (RRD 2.25 IFP Shocks)","offer_id":45517407649858,"sku":"JT30SB2-S1","price":5455.99,"currency_code":"USD","in_stock":true},{"title":"Coilover Comp System - Stage 1","offer_id":45517407682626,"sku":"JT30SB2-CS","price":8285.99,"currency_code":"USD","in_stock":true},{"title":"Coilover Comp System - Stage 2 (Fast CD)","offer_id":45517407715394,"sku":"JT30SB2-CSS2","price":9144.99,"currency_code":"USD","in_stock":true},{"title":"Coilover Trail Runner - Stage 1","offer_id":45517407748162,"sku":"JT30SB2-TR","price":9185.99,"currency_code":"USD","in_stock":true},{"title":"Coilover Trail Runner - Stage 2 (Fast CD)","offer_id":45517407780930,"sku":"JT30SB2-TRS2","price":9950.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1476\/5984\/files\/JT30SB2-S1.THUMB__20507.1746731752.webp?v=1791653462","url":"https:\/\/www.skinnypedalracing.com\/products\/rock-krawler-3-0-inch-silverback-long-arm-system-2020-gladiator-jt","provider":"Skinny Pedal Racing","version":"1.0","type":"link"}