Incredibly compact, this rack uses our patented technology to carry mountain bikes in a fantastically efficient way. When not in use the rack folds up and out of the way. Adjustable in height, layback and setback it will fit virtually any vehicle, right out of the box. Maximum weight is 100lbs. For 1 ¼” and 2" receiver hitches. 1 ¼” models include an integrated anti-slop device to eliminate hitch play, 2" models include a lockable anti-rattle hitch pin (requires 1/4" shank padlock). As an added safety feature the NSR 2-bike rack will not block the brake lights on most cars. Something to consider with your expensive bikes behind. Easily the most compact and simple to use 2-bike rack in the industry. Note: not intended for road bikes: check with hitch manufacturer for compatibility (not all 1 ¼" hitches are suitable for bike racks).