Ok, 2001 cr125r with 2 hrs on new top end. Mint condition. It has older fuel, and an older spark plug. Im thinking new plug, new gas, and taking it easy for atleast another couple hours. What oil do people run in the cr's? And it has a PC woods silencer and arrester. Stock reeds, should i go v force or boyesen? Its a trail bike, and a cr125 so the low end needs help. Im going to change sprockets too. What should i be at? Front and rear. I have a 51 and a 53. :ride: