Patent pending design specifically for use on road bikesdoes not require braze on mounts or threaded dropoutsrack is mounted 4cm behind the axle allowing for improved wheel clearance on bicycles with shorter chainstaysspecially designed hardware attaches to caliper brake mounthand welded 102mm tubular 6061 t6 alloy constructionultra narrow profile improves aerodynamics and keeps load closer to centerfits 700c wheelsample space for road fendersweight 510g 112lbscapacity 50kg 110lbs