70 cc bore kit help

If i get a 70 cc bore kit can i just get the bore and fit it or do i need other things with it ? thanks

 

Re jet, rollers an springs

 

you need a fucking reed aswell if you dont want your ped to get blown and bunch of other stuff if your wishing to tune a scooter properly... not only what oliwest said..

 

if you put 70s on you need to rejet carb, change rollers, reeds, most time best to change air filter to open one so can cool and gets more air too breath