Chain Reaction Bicycles is your local bicycle shop for the San Francisco Bay Area! Unlike some other shops, we are dedicated 100% to serving the needs of local cyclists; our offerings are exclusively available for in-store pickup. You will find us at 1451 El Camino Real, Redwood City CA, 94063. 650 366 7130. Our Los Altos location closed on September 24th, 2017; we have consolidated all operations within our Redwood City flagship store. Our hours and directions may be found here. We look forward to taking care of all of your cycling needs, including service! Mike & Steve Jacoubowsky, Partners, Chain Reaction Bicycles. Serving you since 1980!