{"product_id":"rock-krawler-4-5-inch-adventure-x2-pro-elite-long-arm-jeep-wrangler-jku-4-door","title":"Rock Krawler 4.5 Inch Adventure-X2 Pro Elite Long-Arm - Jeep Wrangler JKU 4-Door","description":"\u003cp\u003eThe 4.5 inch Adventure-X2 Pro Elite long-arm system for the Jeep Wrangler JKU 4-Door takes the Adventure-X2 layout and swaps in four billet aluminum, CNC-machined, service-free lower control arms in long-arm length. Rock Krawler ties the Pro name to its PB\u0026amp;J (Pure Beef and Jealousy) arms, and it pairs a 4-link front with an independent 3-link rear. It is the strongest, maintenance-free way to run the Adventure-X2 layout.\u003c\/p\u003e\u003cp\u003eIt also comes as a Comp System with 2 5\/8 inch RRD racing coilovers up front and matching remote reservoir shocks in the rear, for owners who want coilover adjustability but still need to carry small loads or tow small trailers. Rock Krawler bases its lift heights on Rubicon models in a standard build, meaning a front bumper and winch, a rear bumper and a full-size spare.\u003c\/p\u003e\u003ch3\u003eWhat's in the kit\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2 x front frame side weld-on long-arm mount\u003c\/li\u003e\n\u003cli\u003e1 x weld-on raised trackbar mount\u003c\/li\u003e\n\u003cli\u003e1 x top mount Pro-X drag link\u003c\/li\u003e\n\u003cli\u003e2 x heat shield thermal barriers\u003c\/li\u003e\n\u003cli\u003e1 x 1\/4 inch thick laser cut steel cross member\u003c\/li\u003e\n\u003cli\u003e2 x front billet 7075 aluminum adjustable lower control arm\u003c\/li\u003e\n\u003cli\u003e2 x front adjustable upper control arms\u003c\/li\u003e\n\u003cli\u003e1 x front adjustable anti-wobble track bar\u003c\/li\u003e\n\u003cli\u003e1 x front sway bar disconnect kit\u003c\/li\u003e\n\u003cli\u003e4 x front\/rear triple-rate coil spring\u003c\/li\u003e\n\u003cli\u003e2 x rear frame side weld-on lower control arm mount\u003c\/li\u003e\n\u003cli\u003e2 x rear billet 7075 aluminum adjustable lower control arm\u003c\/li\u003e\n\u003cli\u003e1 x rear double adjustable upper control arm\u003c\/li\u003e\n\u003cli\u003e1 x rear adjustable anti-wobble track bar\u003c\/li\u003e\n\u003cli\u003e1 x rear weld-on dual sport track bar bracket\u003c\/li\u003e\n\u003cli\u003e1 x rear weld-on axle truss\u003c\/li\u003e\n\u003cli\u003e2 x rear frame side weld-on shock mount\u003c\/li\u003e\n\u003cli\u003e2 x rear axle side high clearance control arm\/shock\/sway bar link mount\u003c\/li\u003e\n\u003cli\u003e2 x front\/rear extended brake line kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBump stops come with every shock package. On the base system they are not included, but they can be bought separately (RK07123). The coilover packages add: front shock mounts.\u003c\/p\u003e\u003ch3\u003eWhy this system\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFour billet aluminum, CNC-machined, service-free lower control arms in long-arm length\u003c\/li\u003e\n\u003cli\u003eAdventure Series joint in every control arm, with no grease required\u003c\/li\u003e\n\u003cli\u003e4-link long-arm front and independent 3-link long-arm rear\u003c\/li\u003e\n\u003cli\u003eX2 rear geometry with enhanced rear instant center and roll center\u003c\/li\u003e\n\u003cli\u003eHigh-clearance rear axle mounts gain 3.5 inches of clearance under the rear axle versus stock\u003c\/li\u003e\n\u003cli\u003eRear upper shock relocation brackets so you do not give up shock or suspension travel\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 full kit with no shocks, for builds where you already have shocks picked out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 1 (RRD 2.25 Inch IFP Shocks)\u003c\/strong\u003e: Rock Krawler's in-house shock with a 2.25 inch O.D. hard anodized fluted aluminum body, a 3\/4 inch 17-4 PH stainless steel hard chrome plated shaft, a billet aluminum valve circuit, dual DU shaft bearings and double redundant sealing. It is serviceable, rebuildable and revalveable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 2 (RRD 2.25 Inch FCD Shocks)\u003c\/strong\u003e: Everything in the IFP shock plus a Fast Compression Damping (FCD) adjuster, up to a 30 percent increase, so you can fine-tune ride quality and handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComp System Stage 1 (Coilovers)\u003c\/strong\u003e: front 2.625 inch RRD remote reservoir coilovers with 12 inch of shock travel, which Rock Krawler says yields 13.88 inch of front axle travel, plus matching 2.625 inch RRD remote reservoir rear shocks with 10.5 inch of travel for 12.1 inch of rear axle travel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComp System Stage 2 (Coilovers, Fast CD)\u003c\/strong\u003e: the same coilover and rear shock layout with Fast CD (compression damping) adjusters on the coilovers and rear shocks for more tuneability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRock Krawler's generic shock lengths for this system are front 18.5 inch collapsed and 29 inch maximum extended and rear 17.3 inch collapsed and 28.31 inch maximum extended, which is handy if you plan to shop for your own shocks.\u003c\/p\u003e\u003ch3\u003eFitment and what else you'll need\u003c\/h3\u003e\u003cp\u003eFits 2007-2018 Jeep Wrangler JKU 4-Door models. Rock Krawler lists it for Sport, Sahara, Willys and Rubicon trim levels.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIf building with a spare delete we recommend dropping 1 inch in coil lift height for the rear.\u003c\/li\u003e\n\u003cli\u003eIf building an overland or heavily upfitted build in the back, we recommend upsizing 1 inch in coil lift height for the rear.\u003c\/li\u003e\n\u003cli\u003eRequires removal of: OEM frame side front and rear lower control arm mounts; OEM frame side front and rear upper control arm mounts; OEM rear axle side brackets; OEM frame side rear shock mount.\u003c\/li\u003e\n\u003cli\u003eRequires welding of: front and rear frame side long-arm mounts; provided rear axle side control arm\/shock\/sway bar link bracket, track bar bracket and rear axle truss; provided frame side rear shock mount.\u003c\/li\u003e\n\u003cli\u003eMinor exhaust rerouting required before the collector on the driver's side. This is recommended to be done prior to the suspension system being installed.\u003c\/li\u003e\n\u003cli\u003eRear shocks will require a standard bushing and sleeve just like the rear lower shock bushing and sleeve. We have removed the weakness of the bar pin setup with the supplied rear upper shock mounts.\u003c\/li\u003e\n\u003cli\u003eRecommend installing limiting straps to avoid over extension of suspension components after vehicle is all set up.\u003c\/li\u003e\n\u003cli\u003eThis system allows the rear axle to be pushed back up to 1 inch over stock which perfectly centers the rear axle assembly under typical aftermarket flat fenders. It also allows for larger tires without contacting the rock sliders or rear pinch seam.\u003c\/li\u003e\n\u003cli\u003eThe rear upper third link is designed around standard low pinion rear axles. \u003c\/li\u003e\n\u003cli\u003eCoilover packages: requires modifying the OEM front \u0026amp; rear shock mounts and welding of the raised upper shock mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTire guidance from Rock Krawler: 33 or 35 inch tall tires with full OEM fenders, 37 inch tall tires with flat fenders. They typically recommend 4.5 inch of backspacing with 33 and 35 inch tires and 3.5 inch with 37 inch tires.\u003c\/p\u003e\u003cp\u003eRock Krawler backs this system with lifetime warranty coverage.\u003c\/p\u003e","brand":"Rock Krawler","offers":[{"title":"Base System (No Shocks)","offer_id":45517456834626,"sku":"JK45AXPLA-4","price":7061.99,"currency_code":"USD","in_stock":true},{"title":"Stage 1 (RRD 2.25 Inch IFP Shocks)","offer_id":45517456867394,"sku":"JK45AXPLA-4S1","price":8315.99,"currency_code":"USD","in_stock":true},{"title":"Stage 2 (RRD 2.25 Inch FCD Shocks)","offer_id":45517456900162,"sku":"JK45AXPLA-4S2","price":9118.99,"currency_code":"USD","in_stock":true},{"title":"Comp System Stage 1 (Coilovers)","offer_id":45517456932930,"sku":"JK45AXPLA-4CS","price":11113.99,"currency_code":"USD","in_stock":true},{"title":"Comp System Stage 2 (Coilovers, Fast CD)","offer_id":45517456965698,"sku":"JK45AXPLA-4CSS2","price":11972.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1476\/5984\/files\/JK45AXPLA-2S1.THUMB__08334.1750279495.webp?v=1791653766","url":"https:\/\/www.skinnypedalracing.com\/products\/rock-krawler-4-5-inch-adventure-x2-pro-elite-long-arm-jeep-wrangler-jku-4-door","provider":"Skinny Pedal Racing","version":"1.0","type":"link"}