Dirtbike break in.

[rm80_rider]

I need to know how to break in my new piston and rings. Is it ok if for 3 hours or longer that i just ride slow and go through all the gears without hittimg the powerband. Anyone able to help.

[screamer294]

I think its more about heat cycles than taking it slow for so many hours.  First time starting after rebuild, warm it up fully, ride it around for 15 minutes going less than half throttle, shut it down and let it cool completely.  do this 2 more times letting it cool down completely each time and then ride it like you stole it.