Fsa the big fat pig reducer headsetfull speed ahead fsa produces world class bicycle components for road cycling mtb and triathlon for world tour teams club riders and people who just love to ride their bikes fsa has a long history in the sport of cycling and a strong heritage of innovation in design and manufacturing featuresreduction design 15 sized headtube to 118 steererthreadless headset with forged chromoly cups10mm headtube insertion super oversizedlower ball bearingschromoly