I have a 2010, she's a freak.I have a Rekluse in my 2016 KX450f right now for single track. Having that Rekluse with the power of a 450 is a blast! And i know a KX isn't ideal for single track, but I like being able to hit the MX track also (although I haven't used the Rekluse while riding mx yet). Surprisingly, the KX is very manageable in tight wooded areas with it being a norrow bike, plus the combination of the Rekluse, softening up the suspension and the bike being fuel injected.