MICROSHIFT MEGA CASSETTE W/ALLOY SPIDERTHE MEGA CASSETTEThe type of cassette you use on your bike will have a significant impact on your performance. A cassette that has more teeth will make it easier to climb while a cassette that has fewer teeth will have fewer step-ups in between the gears, which is more valuable while racing. The MicroShift Mega Cassette With Alloy Spider is designed for 11-speed setups. It has chrome plated sprockets and an aluminum alloy bracket spider.FeaturesAluminum alloy bracket spider reduces the overall weightChrome plated sprockets for hardness and corrosion resistanceWide gear combination for enhanced climbing capabilitiesSpecificationsCassette Body TypeShimano/SRAM 11-SpeedCassette Cogs11-13-15-17-19-21-24-28-32-36-4211-13-15-17-19-21-24-28-32-36-40Drivetrain Speeds11Cassette MaterialAluminumApproximate Weight434g | Microshift Mega Cassette W/Alloy Spider 10 Speed, 11-42T