SRAM Red OG-1090 PowerDome 10-speed Cassette 2010. The lightweight SRAM Red OG-1090 PowerDome 10-speed road bike cassette combines precise, efficient shifting with lightweight performance and durability.
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This Sram Red Og-1090 Powerdome 10-Speed Cassette 2010 is very good , and works very good . I saved some wealth on it and I think you don't need to purchase a new cassettes & freewheels for a long period.