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13 - 14 - 15 - 17 - 19 - 21 - 24 - 27 - 30t
This is a Harris Cyclery exclusive, designed by Sheldon Brown, based on a Shimano CS-6500 Ultegra cassette.
This is intended to provide nice low gears and still preserve reasonably close spacing in the cruising range, without wasting gears by devoting space to ludicrously high gears. This is intended to be a good match for bikes with traditional "full sized" chainrings.
It is generally good practice to replace the chain when you replace the cassette.
We recommend the SRAM PC-951 chain for use with this cassette.
This cassette will index with any Shimano-type 9-speed shifter and any rear derailer.
This cassette will fit any Shimano 8/9/10-speed hub.
You can check the gearing options out with our On Line Gear Calculator