RE: belt ct4s
The CT041 that is for the 25T pulley. If you change to the 16T pulley you will us the CT019. Changing the 25T pulley out to the 16T pulley, is good if you are racing. It will lower your mph by about 10mph. But your car will be a lot quicker on the start for faster take-offs. The belt you got is for the 16T pulley.