{"product_id":"rock-krawler-4-5-inch-x-factor-x2-long-arm-system-jeep-wrangler-jl-2-door","title":"Rock Krawler 4.5 Inch X Factor X2 Long Arm System - Jeep Wrangler JL 2-Door","description":"\u003cp\u003eThis 4.5 inch X Factor X2 long arm system is Rock Krawler's answer for a 2018 and newer Jeep Wrangler JL 2-door that is going to get pushed hard. Both ends use an independent 3 link design, and the whole package is built around getting the axles to move.\u003c\/p\u003e\u003ch3\u003eWhat's in the kit\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWeld-on long arm hardware: front long arm mounting system, (2) rear frame side long arm mounts, (2) rear axle side control arm mounts, rear frame side upper control arm mount, rear track bar mount and rear axle truss\u003c\/li\u003e\n\u003cli\u003e(2) weld-on rear upper shock mounts\u003c\/li\u003e\n\u003cli\u003e(2) high clearance adjustable X-Factor front lower control arms and an adjustable front upper control arm\u003c\/li\u003e\n\u003cli\u003e(2) high clearance adjustable X-Factor rear lower control arms and a rear upper control arm\u003c\/li\u003e\n\u003cli\u003eFront and rear adjustable anti-wobble track bars\u003c\/li\u003e\n\u003cli\u003eFront sway bar disconnect kit and (2) rear extended sway bar links\u003c\/li\u003e\n\u003cli\u003e(4) triple-rate coil springs and (4) coil spring correction seats (Comp coilover packages ship the rear pair only)\u003c\/li\u003e\n\u003cli\u003eHeat Shield Products Sticky Shield kit for the front control arm joints\u003c\/li\u003e\n\u003cli\u003e(2) rear brake line relocation brackets\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy this system\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIndependent 3 link design front and rear for maximum articulation.\u003c\/li\u003e\n\u003cli\u003eDouble adjustable upper control arms front and rear that upsize the factory hardware to 14mm, with a 2 3\/8 inch mounting width and 1 inch Pro Krawler joints at each end. The arm itself is solid chromoly steel.\u003c\/li\u003e\n\u003cli\u003eAdventure Series maintenance free joints at the frame end of the lower control arms cut down on grease points, absorb vibration and keep proper misalignment off-road.\u003c\/li\u003e\n\u003cli\u003eX2 rear geometry with enhanced rear instant center and roll center, plus adjustable rear anti-squat.\u003c\/li\u003e\n\u003cli\u003eHigh clearance rear axle mounts gain 4.5 inches of ground clearance under the rear axle compared to stock, and rear upper shock relocation brackets keep your shock and suspension travel.\u003c\/li\u003e\n\u003cli\u003eTriple-rate coils that work together for a ride Rock Krawler says beats the OEM linear rate springs, with free length set for off-road articulation. Correction seats take out the spring bow from the factory setup.\u003c\/li\u003e\n\u003cli\u003eA Heat Shield thermal barrier kit protects the front control arm joints at the frame, the same idea Jeep uses from the factory.\u003c\/li\u003e\n\u003cli\u003eLifetime warranty coverage is listed in the system benefits.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePick your package\u003c\/h3\u003e\u003cp\u003eThe arms and brackets are the same in every package. The Package option is what changes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase System - No Shocks:\u003c\/strong\u003e The full arm and bracket system with no shocks, for anyone who already has shocks they want to run or is sourcing a shock package separately. Bump stops ship with the shock packages; with no shocks, Rock Krawler sells them separately as RK07124.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBilstein 5100 Shocks:\u003c\/strong\u003e Maintenance free Bilstein 5100 shocks, a good match for the multi-rate coil springs. Rock Krawler's Bilstein package for 3.5 and 4.5 inch lifts references Bilstein 24-310635 (two) and 33-292977 (two).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 1 - RRD 2.25 IFP Shocks:\u003c\/strong\u003e Rock Krawler's own RRD 2.25 inch IFP shocks, built in-house. Fluted aluminum bodies with the cooling surface area of a 2.5 inch shock, 3\/4 inch 17-4 PH stainless shafts with hard chrome plating, billet aluminum valve circuits, dual DU shaft bearings and double redundant sealing. Serviceable, rebuildable and revalveable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComp Coilover System - Stage 1:\u003c\/strong\u003e Coilovers up front, coil springs in the rear. The front is a 2.625 inch RRD racing coilover with a remote reservoir (13 inches of shock travel, 14.4 inches of front axle travel) and the rear gets matching 2.625 inch RRD racing shocks with remote reservoirs. A good fit if you want coilover adjustability up front but still carry small loads or tow a small trailer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComp Coilover System - Stage 2:\u003c\/strong\u003e The Comp layout with Fast CD (compression damping) adjusters added to the front coilovers and the rear shocks, for even more tuning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrail Runner Coilover System - Stage 1:\u003c\/strong\u003e 2.625 inch RRD racing coilovers with remote reservoirs at all four corners. It maximizes off-road ability and comes tuned for the street, but Rock Krawler cautions that rear coilovers do not handle changing loads well, so regular towing or heavy weight in the bed is not ideal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrail Runner Coilover System - Stage 2:\u003c\/strong\u003e The Trail Runner layout with Fast CD adjusters on the coilovers for the most tuning. Same caution about heavy loads in the bed applies.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eGeneric shock lengths for the shock packages are 18.31 inches collapsed and 30.31 inches extended in front, and 19 inches collapsed and 31 inches extended in the rear.\u003c\/p\u003e\u003ch3\u003eFitment and what else you will need\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits 2018 and newer Jeep Wrangler JL 2-door gas models.\u003c\/li\u003e\n\u003cli\u003eRock Krawler bases all lift heights on Rubicon models in a standard build: front bumper and winch, rear bumper and a full size spare.\u003c\/li\u003e\n\u003cli\u003eTires and wheels, per Rock Krawler: Sport and Sahara take 37 inch tires with full OEM fenders or 38 inch with trimmed or high lined fenders, on 3.5 inches of backspacing. Rubicons take 37 or 38 inch tires with full OEM fenders or 40 inch with trimmed or high lined fenders, on 4.5 inches of backspacing for 37 inch tires or 3.5 inches for 40 inch tires. A 3 inch bump stop height is recommended throughout.\u003c\/li\u003e\n\u003cli\u003eRock Krawler suggests dropping 1 inch of rear coil lift height if you are building with a spare delete, and going up 1 inch for an overland or heavily loaded rear.\u003c\/li\u003e\n\u003cli\u003eInstall: requires welding the front and rear long arm mounts, removing the OEM frame side lower and upper control arm mounts front and rear plus the OEM axle side rear lower control arm and track bar mounts, and modifying the OEM rear shock mounts to weld on the raised rear upper shock mounts (front shock mounts too on the coilover packages).\u003c\/li\u003e\n\u003cli\u003eFront 3 link systems need aftermarket front axles that do not have F.A.D.\u003c\/li\u003e\n\u003cli\u003eRock Krawler recommends a new front C.V. driveshaft for any front shock with a maximum extended length over 29 inches, and limiting straps to avoid over-extending suspension components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRock Krawler lists lifetime warranty coverage on this system.\u003c\/p\u003e","brand":"Rock Krawler","offers":[{"title":"Base System - No Shocks","offer_id":45517383008322,"sku":"JL45X2LA-2","price":4980.99,"currency_code":"USD","in_stock":true},{"title":"Bilstein 5100 Shocks","offer_id":45517383041090,"sku":"JL45X2LA-2B51","price":5622.99,"currency_code":"USD","in_stock":true},{"title":"Stage 1 - RRD 2.25 IFP Shocks","offer_id":45517383073858,"sku":"JL45X2LA-2S1","price":6235.99,"currency_code":"USD","in_stock":true},{"title":"Comp Coilover System - Stage 1","offer_id":45517383106626,"sku":"JL45X2LA-2CS","price":9046.99,"currency_code":"USD","in_stock":true},{"title":"Comp Coilover System - Stage 2","offer_id":45517383139394,"sku":"JL45X2LA-2CS2","price":9905.99,"currency_code":"USD","in_stock":true},{"title":"Trail Runner Coilover System - Stage 1","offer_id":45517383172162,"sku":"JL45X2LA-2TR","price":9901.99,"currency_code":"USD","in_stock":true},{"title":"Trail Runner Coilover System - Stage 2","offer_id":45517383204930,"sku":"JL45X2LA-2TRS2","price":10666.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1476\/5984\/files\/JL45X2LA-S1.THUMB__93901.1748551064.webp?v=1791653286","url":"https:\/\/www.skinnypedalracing.com\/products\/rock-krawler-4-5-inch-x-factor-x2-long-arm-system-jeep-wrangler-jl-2-door","provider":"Skinny Pedal Racing","version":"1.0","type":"link"}