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Yamaha yz250f is the best.

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Finally got around doing a top end on my 08 yz250f I am original owner. It has 129 hours, and when I took it apart the piston looked amazing. very little carbon on top and the sides looked almost new. If I did not already have a new JE piston I would just put new rings on and call it a day. Plug was perfect valves were spot on. I could not be happier with my choice going from a Honda to Yamaha. The funny thing is it still had plenty of power, no smoking at all just felt like it had no compression when kicking it over. Oh when I broke it in from new i rode the snot out of it. Hard break in is the way to go.👍

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good to hear, mine is just getting finished off now ! and i need to run it in so i will ride it like i stole it !

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Either Shell Rotella or Rotella T synthetic. And about every 5 rides or 15 hours. Not every ride(overkill)

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