realfast,

There are two different set-ups for the CT4. There is a top speed setup that comes stock with the CT4S. Then there is a track Gearing set-up. Which is listed below. It is not neccesarily a gear set up it is a belt and pulley set up.

Track Pulley set-up which is included with the CT4R

Main Belt CT019
Rear Belt CT011

Replacement pulleys. CT015x2 needed.
These are 16t pulley that replace the 25 T pulleys.

What this does. is increase the low-speed of the car tremedously. Top speed loss will be apx 10mph.

CEN RACING