The 200cc does about 75+/- MPH
The125cc does about 55+/- MPH
The 125 and 200 chain is a 520
Use 10w40 or 20w50 4 cycle for wet clutch (NOT REGULAR MOTOR OIL). Your engine is shipped with NO oil.  
The gas tank is 1.3 gallons

Estimated miles per gallon is 80-90 on the 125cc and 65-75 on the 200cc.
The speedometer ratio is 2240:60
The handle bar are 7/8”
The set screws are 4mm x.70
The left side mirror is 8mm thread
The spark plug = NGK D8EA or NGK CR7HSA and the gap is 0.6mm - 0.8mm
The fuse is a 10A
The electrical is 12V
Turn signals not blinking, change the blinker relay, $3 at your local NAPA dealer
White walls care: use S.O.S pads or Westley’s Bleche-Wite and clean frequently or use white wall paint.

BLUE LOCTITE EVERYTHING

Visual Impact Custom Painting

The Hardknock owners forum