e*thirteen Helix Race Cassette - 12-Speed 9-52t Bronze

.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;}e*thirteen Helix Race Cassette - 12-Speed 9-52t Bronze. The e*thriteen Helix Race 12-speed 9-52t cassette is engineered to deliver precision shifting performance with an industry leading 578% gear range. The proprietary 9 tooth smallest cog combined with the 52t largest cog enables the use of a smaller chainring for improved clearance lighter system weight and a lower bail out gear ratio without high gear compromise.Seamless cross-compatibility with Shimano SRAM and TRP 12-speed drivetrains Patented 2-Part design provides strength stiffness light weight and ease of service Aluminum and steel clusters can be replaced separately to reduce service cost 9 tooth high gear allows use of smaller chainrings for clearance and weight savings Fits XD™ and XDR™ Drivers Only (Hope XD drivers are undersized at the clamp location and require a Cassette Shim Kit -Sold Separatel