eBay has a pretty sweet deal on sprockets compared to the actual shops. I'm replacing my friends stock front 15 tooth sprocket on his 400ex with a 14 tooth. I called our local shop powersports in south toms river/beachwood and they want $25 for it. I went on eBay for the 14tooth and found one for $5. So I am gonna do the same to my 2001 CR250, Lower my tooth count by one on my front sprocket. The kind of riding i do is hill climbing, lots of straight aways, dunes, i basically rip on my bike. I dont putt around and have it opened up in each gear. Has anyone done this? And what are the results? Are you happy with the choice?