hidalgo bhai , bike ka engine sealed hai , piston zero ka hai ,
carb genuine hai yb 100 ka , sprokets standard teeth k hain jo atay hain yb mai , ab i want to change sprokets front or rear which ever provides more top speed , magar at the same time i dont want bikes engine to make extra efforts.mjhe sprokets ka bata dain kitne teeth ka dalun , front or rear ???????