Sorry for posting a non-YZ question first off. I cant seem to find and companies that sell a sprocket set for a TTR225. DO you people know if the TTR250 and the TTR225 share the same sprocket sizes. She has 15 tooth front and six gear trans. She never get's out of 4th at the local MX track I was wanting to drop the front down to a 14 tooth too make it pull harder.