Note:A common question is, "I have an extreme application, when would I choose the Smart-Tech servo over the Sonnax super hold?": Both are track-proven in today’s high-power vehicles. With its ratio-style release and supported pin design, the Smart-Tech is
the best all-around upgrade that eliminates EVERY problem associated with the OE servo. Racers looking to reduce line pressure for greater efficiency will most
benefit from the super hold servo’s 30% more apply area.