I now have an extra cylinder for my 2001 KDX 220. I see all you guys talking about 240 kits for your 200's, but has anybody put a big bore kit in their 220's? I've got all the mods on mine and it runs great, but I would still like a little more HP. Can I have it bored and sleeved to something close to a 250? If anyone has done this I would sure appreciate some info.