I dont know what parts store you have local.....but, got to rockymountainatv.com or motosport.com for you chain and sprockets. If you are running this bike in the sand, DO NOT but aluminum rear sprockets. They are to weak and will be ruined by the end of the day. As far as the oil, you can use hp4 on the motor side. For the tranny side run the honda tranny oil(comes in a tall red squirt bottle. Also, check out crfsonly.com