Sram rival 22 wifli 11 speed rear mechsram has risen to the highest levels of professional cycling by giving riders componentry that inspires confidence and performs flawlessly with many of the worlds 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 featuresmid cage derailleur works with cassettes up to 32 teethwifli delivers