I've had RC springs up front on my 75 for two years now. The ride is firm, but as somebody noted above the RC springs have the friction pads between the leafs so they can flex some and move freely. Mine is on pavement most of the time but when I do get the time to go off road I don't mind the ride at all. I'll drop the tire pressure down to 15psi or so and that by itself smooths most of the roughness out on the trail. Having a shackle flip outback helps though.
If you are on a budget, the RC springs do a fine job for the cost. Funny thing is I think most of the bad opinion on the RC springs might be from older kits. I know my kit I bought new had all the same bits needed to help the springs move freely (urethane bushings and friction pads). Notice I said move freely, not flex. MY RC springs will flex, but not like a one with a less spring rate, that's just physics. My point is, if the springs can't move freely it will contribute to a harsher ride. It's not just spring rate that makes a spring ride smooth or harsh.
An iteresting point is that when you look at the spring rate table there are two well know brands that have higher spring rates than the RC springs (Superlift HD's and Warn's). I never read anybody bashing those, yet a lot of people pile onto the RC subject whenever it comes up. I'd wonder if the bad rep is from older kits or recent ones. Everyone is entitled to their own opinions, just wondering if the how the RC rep got so bad.
