. SRAM has risen to the highest levels of professional cycling by giving riders componentry that inspires confidence and performs flawlessly With many of the world's top teams Making the Leap to SRAM, there is little doubt that wins at the Classics, Grand Tours, Ironman, and Cross Worlds were due in part to the lightest, most efficient, and ergonomic road componentry ever made. Features Three options 11 26 260g, 11 28 271g or 11 32 310g Heat treated steel cogs with aluminum spider Compatible with PC 1170 and PC 1130 chains Specifications Weight 260g 11 26 271g 11 28 310g 11 32 Material Heat treated Steel Cogs Aluminum Spider 3 cogs Steel Lock ring Gear Ratios 11 26 11,12,13,14,15,16,17,19,21,23,26, 11 28 11,12,13,14,15,16,17,19,22,25,28, 11 32 11,12,13,14,15,17,19,22,25,28,32 Speeds 11 Recommanded Chain SRAM PC 1130 chain Compatibility SRAM RED 22, SRAM PC 1170 & PC 1130 chains 11sp Chains Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.