12 - 13 - 15 - 17 - 19 - 21 - 24 - 27 - 30 Teeth
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.
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
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Displaying reviews 1
my cannondale caad 8 came with a compact and 12-26 cassette. hard to climb big hills as i am a novice and over 50. changed to century 12-30 cassete and love my bike now and hill climbing is way easier. Needed a longer B screw but works with same deraleir. great investment. thanks sheldon!