Hey guys I'm new to TT, and to larger engine 4 strokes. I just picked up a 2000 yz426 for a pretty good deal, but I was doing research on vins and stuff and according to the vin on the bike, it's in the 200-249cc range... But on the engine casing it says 426cm cubed... The owner also said it was 426... Probably a stupid question but, I'm presuming to trust the actual engine casing since the blog or page I visited may have been wrong or something. Just wanting to be sure I didn't get ripped off and to be sure I'm not uninformed about my own bike. Helpful response will appreciated to ease my worry about this. It feels like it's bigger than my '99 cr250 power wise, but I tend to over think things Possibly that year used the same frames for 250 and 426?