The XT 10-Speed Cassette uses plated steel cogs for superior durability, but that doesn't mean that it weighs a ton. The largest six cogs are minimal in design and are pinned to two lightweight alloy spiders -- three cogs for each spider. The four smallest cogs go on separately, and the whole...

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There's no need to deal with shifting that interrupts our pedal stroke when we can have the XTR CS-M9101 12-Speed Cassette, which delivers definitive shifting that lets us pedal continuously. This cassette lets us shift smoothly and quietly, and it offers increased acceleration by reducing...

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