FYI. If you're buying this for a suzuki ts185, you will need a longer chain. It's just a bit too big. I've had it happen to me before with other bikes and it makes sense from a business standpoint because you'll need to go out of your way to buy another product. I very rarely give reviews but I was quite irate this morning when the chain was just barely too short even with the adjusters all the way in. To sum it all up, if you're getting the sprocket just get a chain as well.
I have used Sunstar sprockets for years, especially when I want a steel sprocket. The quality, fit and finish is excellent, and chances are the OEM sprocket was also a Sunstar. I've never had an issue with them, and they last the same as OEM sprockets at sometimes a fraction of the OEM price.