I was a little nervous about dropping this much on a lever, but I rode it today and it was great. I have an 07 CRF450 and my left arm would always pump up worse than my right arm at the sand track we go to. I installed it in about 45 minutes but I'm very careful when working on my bike. If you have had the clutch cable out recently, it could be 15 minutes. On my bike, the slave cylinder mounts in a different area than the clutch bracket, so don't spend 15 minutes trying to get where it will not. The big deal about this product for me was not the reduced effort to pull the lever (which was a lot better), it was the smooth engagement and the improved feel of the clutch. I found myself stalling less and turning faster laps because I was not avoiding the clutch as much as I used to. I'm a 43 year old novice and I definitely think this was a worthwhile improvement for me and my setup. If you're younger and in better shape, might not be worth it. Also might not be as big of a deal on a smaller bike with lighter clutch springs.