SRAM XG-1290 E1 CASSETTES & COGS 180288
FH CASS SRAM XG1290 E1 10-36 12s XDR RAINBOW XG-1290 E1 710845910449 12-SPD Gradual gear progression between cogs - at least five one-tooth jumps on 10-28T, 10-30T and 10-33T cassettes — while still offering a wider range Provides secure shift ramps specifically designed for electronic shifting, whether racing road on a 10-28T or creating an all-road setup with a 10-36T One-piece machined steel X-DOME design for weight savings 10-30T and 10-36T options available in RED for the first time Designed for smooth and fast shifting even under pressure 10-tooth start helps provide a wider gearing range 10-36t 12sp 10,11,12,13,15,17,19,21,24,28,32,36 Rainbow XG-1290 XDR 10-36t, Rainbow MILTI