Mike's Bikes was founded in 1964 as one of Marin County's very first Schwinn shops. It is rumored that our store in San Rafael was home to some of the first mountain bikes in the country. Cycling has changed dramatically as the decades have rolled by, but Mike's Bikes has never wavered from our total dedication to the sport. Today, Mike's Bikes is a growing family of bike shops, all with a singular purpose - to get as many people on bikes as possible. We operate 14 wildly successful stores in Petaluma, San Rafael, Sausalito, San Francisco, Berkeley, Palo Alto, Los Gatos, Sacramento, Walnut Creek, San Jose, Pleasanton, Folsom, Roseville, & Stanford Research Park! Our professional staff of over 250 cycling enthusiasts will ensure that your experiences both in the store and on your bike are the best they can be. Why shop with us? Because we know bikes and we care. We don't sell snowboards, we don't sell kayaks and we don't sell tents. We only sell bikes - you might even say bikes are our life. Why does that matter? Because this utter fanaticism for our product makes us the best at what we do - We live to create cyclists. For the Ride of your LifeĀ®
Mon - Fri: 10:00am - 6:00pmSat: 10:00am - 5:00pmSun: 12:00pm - 5:00pm
DetailsFits the following Shimano rear derailleurs: Ultegra RD-6770 Part Numbers
ReviewsShimano Ultegra 6700-A Rear Derailleur Pulley Set 10-Speed
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Are all derailleur pulleys the same?The pulleys that will actually fit on your derailleur are determined by the generation of your group set. This is a number stamped on every part and goes by a four digit number. For instance any number between 9100 and 9199 indicates the latest generation Dura Ace.
Which pulley is which on rear derailleur?Rear derailleurs use a cage fitted with two pulleys. The lower pulley pulls backwards to give tension to the lower section of chain. It is called the tension pulley, or 'T' pulley for short. The upper pulley guides the chain to the sprockets.
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