About Us

Castro Valley Cyclery has been a part of the Bay Area cycling community since 1982, providing top-notch sales and service for all types of bicycles and cyclists.

John Koslosky is the owner, operator, and a former US National Cycling Team and UCI professional race mechanic. He has been a consultant in the bike industry, and technical director for national and world-level race teams. He is also a competitor in many different cycling disciplines including Road, MTB, Cyclocross, and Track, and has competed at the UCI Mountain Bike World Championships. It all started with his first local bike race in 1980.

With our unique combination of riding, racing, and wrenching, Castro Valley Cyclery has the knowledge, experience, and expertise to fulfill all the parts, service, and general bike knowledge needs of riders from Castro Valley and around the entire Bay Area and Northern California.

Visit us to experience the personalized service you seek from your local bike shop.