I´ve had it since new. Regular oil changes and filters, took a couple changes to realize it had 4 filters. I´m 230lbs and an agressive non-racer. Lots of single track and logging roads. the 5-sp is a little short on top but still good for 80 mph. first is a little high in tight single track. Had an overheat problem when running too slow in the woods, solved it by wrapping with header tape and covering with hi-temp silicone - works awesome. Valves never need adjusting and to check is 1/4 the work and time of doing my kids KTM 400 EXC. The motor is crazy, better then anything I´ve ever ridden (CRF 450, YZ426, CR500) So much better... The battery only lasts a couple seasons, always keep it on a ´battery saver´. My last bike was a KTM 300 MXC, miss it but I love this one too. Initial jetting issues when new, dialed in and never a problem since. Thirsty bike, added the larger tank this winter. Electric start takes a knack and some getting used to. Sometimes it runs out of juice before it lights and with no kick that´s a real drag. Definitely a great woods bike, never been to a track.