Piston and rings break in

[w00dzy]

Soo whats the best way to break in piston and rings on my xr 250? Hard and fast or slow and steady?

Edited February 10, 2014 by w00dzy

[Oil Baron]

Don't hold it at any given RPM and don't baby it.  Go through the gears and ride it like you stole it, hard and fast under full load.  Change oil after first ten or twenty miles.  That's my preference.

[creeky]

Don't hold it at any given RPM and don't baby it.  Go through the gears and ride it like you stole it, hard and fast under full load.  Change oil after first ten or twenty miles.  That's my preference.

Couldn't have said it better.

[Thermographer]

Ditto

[Wallander]

To have an easy to follow method: warm up quickly (no idling), 3 x 10min runs of continuous acceleration and engine braking with 1/3, 2/3 then full throttle usage (cool down a bit between the runs), then oil change and done. Worked on my XR.