Product came clean and free of scratches or burs. All teeth were spotless. I weigh 185 and still get around just fine with the little power these bikes have. Have a top speed of 45 mph now( takes a quarter mile to get there though) 1st and second gear have plenty of bottom end power still. About 50 miles on the sprocket now and shows no signs of wear and performed flawlessly. Pictures are from after those 50 miles. Bolted on without a problem threads were clean and worked with the retainer and bolts from stock sprocket. Would purchase again and again and Would buy anything from oemcycles that I needed.