{"product_id":"rock-krawler-3-5-inch-x-factor-mid-arm-system-jeep-wrangler-jlu-4xe","title":"Rock Krawler 3.5 Inch X Factor Mid-Arm System - Jeep Wrangler JLU 4xe","description":"\u003cp\u003eThe Rock Krawler X Factor is a complete bolt-in 3.5 inch mid-arm system for the 4-door Wrangler JLU 4xe. The adjustable upper and lower control arms use Pro Krawler joints at the axle and maintenance-free Adventure Series joints at the frame, and Rock Krawler rates the combination at 95 degrees of misalignment. You can tune caster and pinion angle front and rear, and the bind in the factory arms is greatly reduced.\u003c\/p\u003e\u003cp\u003eRide quality is the other half of the job. Rock Krawler's triple-rate coils are tuned so the Jeep rides better on the road than it does on the factory linear-rate springs, correction pads reduce the spring bow built into the stock setup, and the track bar geometry corrections let you center the axles so handling does not suffer. The base and shock packages bolt in; the coilover packages need some welding (details below).\u003c\/p\u003e\u003ch3\u003eWhat's in the kit\u003c\/h3\u003e\u003cp\u003eIncluded with the base and shock packages:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e4 triple-rate coil springs\u003c\/li\u003e\n\u003cli\u003e2 front high clearance adjustable lower control arms\u003c\/li\u003e\n\u003cli\u003e2 front high clearance adjustable upper control arms\u003c\/li\u003e\n\u003cli\u003e2 front spring pads\u003c\/li\u003e\n\u003cli\u003e1 adjustable front track bar\u003c\/li\u003e\n\u003cli\u003e2 Gen-II sway bar links\u003c\/li\u003e\n\u003cli\u003e2 rear high clearance adjustable lower control arms\u003c\/li\u003e\n\u003cli\u003e2 rear high clearance adjustable upper control arms\u003c\/li\u003e\n\u003cli\u003e2 rear spring pads\u003c\/li\u003e\n\u003cli\u003e2 adjustable rear sway bar links\u003c\/li\u003e\n\u003cli\u003e1 bolt-on rear track bar relocation bracket\u003c\/li\u003e\n\u003cli\u003e1 rear adjustable track bar\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe coilover packages (Comp and Trail Runner) use a different spring and shock layout, so their parts list differs. Rock Krawler lists these items for the coilover packages: 2 triple-rate coil springs; shock towers and brackets.\u003c\/p\u003e\u003ch3\u003eWhy this system\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e95 degrees of misalignment.\u003c\/strong\u003e X Factor adjustable arms, with Pro Krawler joints at the axle and Adventure Series joints at the frame, take most of the factory bind out of the suspension.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple-rate coils.\u003c\/strong\u003e Tuned for on-road comfort, with the free length to stay seated in the bucket through full articulation (with a proper length shock installed).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLean correction.\u003c\/strong\u003e Correction pads cancel the spring bow in the factory setup, so the Jeep sits level on all four corners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable track bars, improved rear roll center.\u003c\/strong\u003e Adjustable front and rear track bars and a bolt-on rear track bar relocation bracket let you center the axles after the lift so on-road handling stays predictable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpgrade path.\u003c\/strong\u003e Rock Krawler lists the system as upgradable to its long arm system later.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGen-II front sway bar links.\u003c\/strong\u003e Included with the kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime warranty coverage.\u003c\/strong\u003e Rock Krawler lists lifetime warranty coverage on the system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePick your package\u003c\/h3\u003e\u003cp\u003eThe control arms, track bars and hardware are the same Rock Krawler X Factor Mid-Arm kit in every package. The package decides your shocks and, for the coilover packages, the spring layout.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase System (No Shocks):\u003c\/strong\u003e The full kit with no shocks, for builders who already have shocks picked out. Bump stops come with every shock option but not with this one; Rock Krawler sells them separately as RK07124.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBilstein 5100 Shocks:\u003c\/strong\u003e Adds Bilstein 5100 shocks. Rock Krawler calls them a great pairing with its multi-rate coil springs and they are maintenance free. Bump stops are included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 1 (RRD 2.25 IFP Shocks):\u003c\/strong\u003e Adds Rock Krawler's own RRD 2.25 inch IFP shocks, designed and built in-house: hard anodized fluted aluminum body (2.25 inch O.D., with the cooling surface of a 2.5 inch shock), 3\/4 inch 17-4 PH stainless steel hard chrome shaft, billet aluminum valving, dual DU shaft bearings and double redundant sealing. Serviceable, rebuildable and revalveable. Rock Krawler lists generic shock lengths of 17.5 inches collapsed \/ 29.5 extended in front and 18.5 \/ 30.5 in the rear. Bump stops are included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComp Coilover Stage 1:\u003c\/strong\u003e Coilovers in front, coil springs in the rear: RRD 2.625 inch RR coilovers with remote reservoirs up front (12 inch travel, 13.3 inches of front axle travel) and matching RRD 2.625 inch remote reservoir shocks in the rear (11.5 inch travel, 12.8 inches of rear axle travel). Rock Krawler pitches the Comp System at drivers who want coilover racing shocks up front but still carry small loads or tow small trailers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComp Coilover Stage 2 (Fast CD):\u003c\/strong\u003e The Stage 1 Comp layout with Fast CD (compression damping) adjusters on the front coilovers and rear shocks (RRD 2.625 inch FCD) for finer tuning. Travel figures match Stage 1.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment and what else you'll need\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits the 4-door Wrangler JLU 4xe, Sport, Sahara, High Altitude and Willys trims, 4WD.\u003c\/li\u003e\n\u003cli\u003eRock Krawler lists the engine option for this kit as 4XE.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheels - Sport and Sahara:\u003c\/strong\u003e 37\/38 inch tall tires - recommend 3.5 inch of back spacing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTires - Sport and Sahara with full OEM fenders:\u003c\/strong\u003e 37 inch tall tires (3 inch bump stop height recommended)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTires - Sport and Sahara with trimmed or high lined OEM fenders:\u003c\/strong\u003e 38 inch tall tires (3 inch bump stop height recommended)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLift height:\u003c\/strong\u003e Rock Krawler bases lift heights on Rubicon models in a standard build (front bumper and winch, rear bumper, full-size spare). With a spare delete, drop 1 inch of rear coil lift height; for a heavily upfitted rear, go up 1 inch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation and setup notes from Rock Krawler:\u003c\/strong\u003e We recommend a new front driveshaft if you plan to off-road routinely. (Adam's Driveshaft, Tom Woods, J.E. Reel). We recommend welding the rear cradle for use with 37 inch tires and above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoilover package notes:\u003c\/strong\u003e Requires removal of the OEM shock mount of frame. Requires removal of the OEM shock and spring mount of the axle. Requires welding of the new coilover mount on the axle only.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rock Krawler","offers":[{"title":"Base System (No Shocks)","offer_id":45517376651330,"sku":"JL35XF-4XE","price":3053.99,"currency_code":"USD","in_stock":true},{"title":"Bilstein 5100 Shocks","offer_id":45517376684098,"sku":"JL35XF-4XEB51","price":3562.99,"currency_code":"USD","in_stock":true},{"title":"Stage 1 (RRD 2.25 IFP Shocks)","offer_id":45517376716866,"sku":"JL35XF-4XES1","price":4410.99,"currency_code":"USD","in_stock":true},{"title":"Comp Coilover Stage 1","offer_id":45517376749634,"sku":"JL35XF-4XECS","price":7119.99,"currency_code":"USD","in_stock":true},{"title":"Comp Coilover Stage 2 (Fast CD)","offer_id":45517376782402,"sku":"JL35XF-4XECS2","price":7978.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1476\/5984\/files\/JL35XF-4XES1.THUMB__02784.1749584096.jpg?v=1791653206","url":"https:\/\/www.skinnypedalracing.com\/products\/rock-krawler-3-5-inch-x-factor-mid-arm-system-jeep-wrangler-jlu-4xe","provider":"Skinny Pedal Racing","version":"1.0","type":"link"}