I run the Team Prime damper, but the Sqaure R/C damper is just as nice. You can also use the Yokomo X-shock, which is decent too. X-shock is a little tricky to build, but works well. I would say the Yokomo damper is meant for more for modified racing and Team Prime/Square damper for stock classes. I've noticed top CRC modified drivers in Japan using the Yokomo X-shock...