A popular bicycle maker is recalling about 12,000 bicycles after receiving reports of the bike’s front fork breaking and causing riders to suffer nasty falls. A bicycle fork is used to hold the front wheel and allows the rider to steer the bicycle. Specialized Bicycle Components, which sold the forks on at least 18 different bike models through retailers from 2007 until July, said riders should immediately stop riding the bikes. Four reports of riders suffering facial fractures and head and shoulder injuries and cuts led to the nationwide recall, according to the Consumer Product Safety Commission.