yz250f

Ok, so I have a 2018 yz250f. the problem is the bike bogs down and dies when switched into 3rd gear or higher. It runs seemingly completely fine in 2nd and 1st. It kicks up easy and sounds good, but shifting up to 3rd and above kills it. I have dropped the oil and oil filter, doesn't seem to...

I have a 2012 Yamaha yz250f someone plz help me i recently took apart my cylinder head down to the piston but didn't mess with the piston what so ever i put everything back together the way i was supposed to but when i tried to start the bike it wouldn't start and back fires occasionally new...

Hey guys, so the other day i was riding my yz250f and it was all good until i tried to jump a log. after i jumped it i stalled it but didn't drop it and it didn't wanna kick start anymore. so me and my friends tried roll starting it then it sounded like it was running but had no power. we tried...

Ok I have a 2007 yz250f and every time I ride it for a while I'll come back and coolant will drip out of the overflow. Every other forum really hasn't helped me with this so i'm hoping this one will. The bike runs fine and isn't overheating it just keeps dripping coolant out of the overflow...