The Allen 400QR hitch bike rack delivers the ultimate package to transport bicycles on the back of your Jeep or SUV with a rear mounted spare tire. Carries up 4 bicycles, 140 LB max capacity. Patented, locking hitch insert quickly installs into 2" receiver hitch.  Wedge design secures and tightens rack inside of receiver hitch; includes two keys.   Quick-fold carry arms drop out of the way when not in use. Extra long hitch insert designed to clear rear-mounted spare tires Rapid tilt-away feature for easy lift-gate access and rack lays completely flat to clear swing out rear tires. Dual-compound tie-down cradles with quick-secure straps protect your bicycles during transport. Accommodates a wide range of bicycle frame designs. Large padded spine shield protects your bicycles from the rack and an included tie-down strap helps you keep everything in place while you're driving. Minor assembly required. No tools needed to install rack to vehicle. Important installation note: never use on trailers. VIEW HITCH BASE DIMENSIONS