- Make sure this fits by entering your model number.
- Turn your existing Shimano Cassette into a Mega range 40 or 42T
- A two piece design made for a stable and durable drivetrain – Chromo teeth mated to an Alloy carrier
- Comes with longer B-tension screw and redesigned 16T sprocket (CR-S005-16) for smoother shifting and tooth ratio
- For installation take out the 15T and 17T sprocket and install the 16T between the 13T and 19T, Add the 40/42T after the largest sprocket
- 110g
This fits your .
COG FOURIER CR-DX008 CASS SHI 42T BU