I have had the CFS 700 running on my 125 for about two years now. Have done some of the mods to increase surface area and have been very happy with the performance. I also added the fender washers. The flow rate is awesome on these. I did just have to replace the flow control valves this week. I tore it down to clean it and they would not stop leaking. I picked up a set on ebay for like $ 12.50 and got them in three days. It might be wise to grab an extra set just in case.