this is a FMF Turbine Core Spark Arrestor/Silencer, it is new, rode on the track one day. i bought it thinking i was going to do the 6 days of Michigan with it and ripped my only good knee apart. sold the bike and the pipe has been sitting on my work bench ever since. this was 2 years ago. i think this will fit 94-98 kx 250's. $50 plus shipping which should only be a couple of bucks