Profile Z-Coaster Slack-Cam Ring C. 75 Degrees
Slack Cam Ring B. provides Z-Coaster slack of:
75 degrees (1/5 of a crank rotation)
Slack Cam-Cam Ring C. and B. (60 Degrees) work best for flat/street/ramp depending on your preference.
Slack Cam rings with different degrees of slack can be bought separately.
See Profile Z-Coaster Slack-Cam Ring Removal/Installation video below: