SRAM PG-850 8 Speed Cassette 2013
Reliable and durable cassette technology. SRAM's cassette performance is optimized through tooth profile and shift ramp design for quick and positive index shifting.
I upgraded my whole drivetrain at once using this cassette and a raceface crank I was able to have a much better gear ratio making my bike much more efficient to pedal. Also, the metal cleans dirt and grime easily which helps limit the wear.