Hey guys! I bought a bike a while ago for $60 and I'm just now getting into riding it a couple miles a day but I wanted to update it a bit. Primarily the brake levers and brakes themselves. I already but new handlebar tape, a chain, and tires on it. I don't even know what model or year it is but that it barely has the number 4130 on it and chicago on the front of the bike. Do you guys have any suggestions? I don't know much about bikes so I thought you guys could help!