i havent even used them, but i dont expect them to perform as well as a gas shock. I only bought them because i thought Ohlins were way out of my price range and at the time i couldnt find anyone selling shocks that were 406mm long other than the cheapies, but i didnt realise then how you can buy good used sets and do them up and i know a lot more now than i did then. I ended up getting some Fox gas shocks that are going to be like new and i will fit them to replace the cheapies.