Change the front sprocket to a 13 tooth. I changed my daughters 110cc ATV to a 13 tooth sprocket, from a 14 tooth. $12.95 shipped from ebay. Daughters ATV sprocket/chain is a 428. Do a search on EBAY 428 Sprocket and you will find plenty of them, Just make sure it is in fact a 428, some model 110cc are 420's. Enter Item number: 120385354376 in the search and that will link you to the seller I buy all my China ATV parts from. You could probably find bushings there also. I also upgraded the suspension a a much softer ride, as well as widened the rear wheels. A quick and simple Rear shock replacement is very easy, Just replace the rear shock with a front shock for a 90% better ride, Stock rear shocks are way too stiff for a 8 year old 55 pound little girl. You should also change the rear sprocket as well depending on how much wear is on it. I have a 420 13 tooth front sprocket, and a 420 37 tooth rear sprocket brand new if interested contact me @
njnoodles@verizon.net.