Today I decided to tackle the suspension, specifically the rear sag on my DR-Z400S that I've had for about a year. Prior to today, the only thing I've ever done with the suspension is "click hard, click soft... neat". After reading how to set the sag, it seemed easy enough and everyone always says the suspension makes the biggest improvement in a bike. Long story short, I had my rear shock loosened all the way up, and I only had about 50mm race sag, but I had 100mm static sag at that point. From what I read, that would indicate a spring that is way too hard for me. I am 99% certain that it is the factory rear spring, which is best suited for a 185lb rider. I am 175-180lbs. Unless I am doing something extrordinarly wrong, this makes no sense to me. I'll list the steps I performed and please let me know if I made a wrong turn. 1. Reset all adjusters to factory settings (eg: 11 clicks out) 2. Set static sag to 25mm as measured from the center of the rear axle to a point above it on the fender. 3. Measure laden/race sag. (fender to axle distance, empty bike held for balance) - (fender to axle distance with me in gear standing on pegs while roomate measures distance) 4 Adjust rear shock preload to compensate for lack or excessive race sag. Before I started messing with the shock, it was all the way down, full preload. I continued to release preload until I was all the way out. At that point, I had 100mm of static, but only 50 mm race sag. The bike was at one point lowered, but has been upright since I have owned it. THe rear spring is yellow if that helps in any way.