Merchant : Rutland Cycling
Product Description
Designed to enhance the power and versatility of your 10 speed drivetrain, Hope's 40T-Rex is a CNC machined cog that replaces your 17T cog to expand the range of your cassette from 11-36T to 11-40T so you can run a single chain ring at the front without losing your climbing gear. 40T-Rex installs behind your existing cassette and comes with Shimano or Sram specific tooth profiles to ensure shifting performance and is available in three stylish colours to suit any bike.
