Our 3.5 X-Factor Plus Short Arm system allows you to run up to 33 tires with excellent road manners and unparalleled off-road ability. Our rebuildable spherical Krawler Joints at the axle connections allow for a tremendous amount of twist. The rear features our triangulated 4 link conversion allowing removal of the rear track bar for maximum rear axle articulation. The Rock Krawler TJ X-Factor Plus system was designed with anti-squat geometry for improved vertical climbing ability. We use a rear upper reinforcing mounts to improve the strength of the OEM rear upper control arm brackets. The weld on rear cradle improves the overall strength of the factory rear axle housing and provides mounting points for the triangulated 4 link members. System Benefits: Rock Krawler's Signature Ride and Handling The Best Off Road Ability of any Short Arm System RTI 1200+ on a 20 Degree Ramp Triangulated 4 Link Rear Conversion Front Sway Bar Quick Disconnects Adjustable Lower Control Arms Allows for 33 Inch Tires Limited Lifetime Warranty Upgradeable to long arm system System Includes: (4) Triple rate coil springs(4) High misalignment/adjustable lower control arms(1) Front high misalignment/adjustable track bar(2) Double adjustable front upper control arms (2) Front adjustable sway bar disconnects(2) Front sway bar link straps(2) Double adjustable rear upper triangulated 4 link arms(1) Weld on rear axle truss made from 1/4 thick laser cut steel(1) Weld on rear truss tie-in plate(2) Rear extended sway bar links(3) Stainless steel brake lines*Including hardware and detailed instructions. NOTES! * Requires a transfer case drop kit, or a C.V. Driveshaft Conversion, or a SYE with C.V. Driveshaft Conversion ** 2003 TJ's equipped with 4 speed automatics will require removal of the factory automatic transmission skid plate if so equipped to allow for proper front driveshaft travel *** Choose your bump stop lengths after you choose your wheel/tire and fender combination. **** Typical wheel fitment for a 12.5 wide tire is a 15 x 8 with 3 3/4 of back spacing.