If your thinking about a china caliper for the front as well, do not fall for that one seller on ebay that has the 200x front calipers for 80-90 bucks- its a china knock off Gy6 scooter caliper that can be had for under $30 and cheaper if u spend the time looking. Theres two types, one has a rubber cap over the mounting bolt sleeve area same as oem other type is solid / just compare yours to pics online. They bolt right up to your stock bracket- and work fine, no issues.
mentioned this in the past/ i just hate folks screwing people over for china parts they themselves can get alot cheaper.
figure this may help other people looking at this thread aswell.
shep