SRAM Rival OG 1070 10-Speed OpenGlide Road Bicycle Cassette

NEW Sram OG - 1070 10 - Speed Cassette: The "OpenGlide" shifting of the 2007 SRAM OG - 1070 will provide crisp, positive shifting under any circumstance - a mellow spin, or at max power on a steep climb . The first time you set eyes on the OG - 1070 you'll likely have the alarming realization that one tooth is missing from each of the 5 high cogs . These missing teeth have two purposes: It serves as a gateway that allows the chain to shift fluidly no matter what kind of stress you're putting the bike under . And it allows the OG - 1070 to weigh in at a scant 220g without having to resort to easily - worn titanium cogs . Rather, the OG - 1070 is made from durable heat - treated steel, giving you tons of mileage before you'll need to replace it .