Welcome to Chain Reaction - Cronulla's premium bike store! We stock an extensive range of premium bike brands including Giant, Merida, Norco, Orbea, Liv, Mondraker and BMC, as well as a huge range of accessories from the likes of KNOG, Burgh, Lezyne, PRO, OAKLEY, Shimano & many more. Home to Australia's first state of the art Shimano Service Centre, designed in collaboration with Shimano Australia to provide premier workshop facilities with the finest tools and equipment available. We also have a bike fitting service from Bikefitting.com to precisely measure, fit and setup your new ride.