quik cylinder question

[400exrider36]

ok, i had my engine rebuilt by a local dealer, because a different local dealer originally put my engine together wrong nearly destroying the entire engine.... anyway, the dealer replaced my cylinder, and i noticed that it was not the white-ish color that all other 2005 yfz cylinders are, instead it looks like a 06 449 cc cylinder.... my recept has the 05 cylinder part number but im still concerned.... just curious what u guys thought....heres a pic, and yes my engine/quad really needs to be cleaned...

[GPracer2500]

Pretty sure the extra CCs on the 06' comes from additional stroke, not bore. I'd *guess* the cylinders are the same for all years.

[GPracer2500]

Yep--it appears the 05' and 06' cylinder part numbers are the same. They may have simply changed the finish for some reason.

[400exrider36]

ah i c. i thought the bore was different.. ok then!