Choose an RPM Engagement which corresponds to the various launch RPM programming desired. All options also requires upgraded Clutching.

If you already have upgraded clutching (STM for example) you only need to purchase/use the programming at the higher RPM Engagement.

EVAP RPM PROGRAMMING: 2200, 2500, 2800 OR 3100

NON-EVAP RPM PROGRAMMING: 2100, 2300, OR 2500

Choose to add the Shift-Tek High Engagement Lime Green Spring ($30) OR the Shift-Tek Clutch Kit ($339)

The Clutch Kit includes the high engagement spring and notched weights.

The weights do not raise the engagement from using the Spring alone, but will help the overall performance of your vehicle.

Must have upgraded STM Primary Clutching ($1866)