Don't have them on a Ranger but I have Camso (was Camoplast) on my Polaris Sportsman 850. I've had the same set for 8 years and have replaced 2 of the boggie wheels (bearings). The only adjustment, maintenance I've done otherwise is track tension (check it after every install). Installs, after the initial one, are less than an hour and simple. I only use them in the winter months, a little trail (backwoods) riding and ice fishing. There are other systems but I've had such good luck with these,I doubt I will ever change brands. Tehy can be adapted to other machines with a mounting kit and main drive hub. Drive sprokets are sized according to the power of the machine (that's where the gear reduction comes in). On my 850 I have a 40% reduction in top end. They also may size the drive sprokets differently from front to rear. They want equal, or just a bit more pull on the front.
Power steering is a must IMO. They are a "bear" to handle without it.
Check out ATVTRACKS.NET they have a ton of info and sell many different systems. Very knowledgable folks.