Originally Posted by
T-BirdJunkie
Craig, that dual-spring coilover pictured is not progressive. It's dual rate. In general, there is not enough room in RC shocks to have an actual progressive coil. Most of them are dual or triple rate IF they have any progression at all.
99% of all trophy trucks and buggies are dual rate shocks front and rear,the top spring is nice hitting the smaller stuff which really makes it plush,then you get in those 4 foot whoop sections and the bottom spring comes alive,even most sandrails run dual rate shocks with triple bypass,that's a whole other topic!