Red DUB 2x E1 Rear Derailleurs Road 33 calories per chew for

33 calories per chew for easy tracking of caloric and electrolyte intake

while the new TechBELT construction continues to provide the handling and racing feeling that made the PZero family famous all over the world

Works on most types of bikes

Compatible only with FD-R9100/FD-R8000/FD-R7000/FD-5801 front derailleurs

Each cassette features a 10-tooth small cog and is designed specifically for wireless electronic shifting

Red DUB 2x E1 Rear Derailleurs Road 33 calories per chew forOptimized layup drops further grams from the hollow carbon arms X Range gearing minimizes cadence change during a front shift One piece 2x chainring results in a lighter weight, stiffer, more durable crankset 29 g lighter than the previous generation Crisp and accurate front shifts Ultra light hollow carbon fiber crankarms DUB bottom bracket adds durability and simplicity Can be upgraded to a power meter SRAM Model ID: FC RED E1 Attributes BB