Hi
For those seriously into modding 50 cc 4 strokes a roller tuning kit is vital
http://www.scooterworks.com/prima-ro...p#.U2AKW3nD9Vs
Ive had and modded 3 4t 50s recently including my latest Tao Tao and found the kit to be invaulable
Use the kit to find your proper weight for your performance needs and then get a set of quality roller or sliders as the tuning ones are not for every day use only dialing them in
I like sliders for my scoots and get them one gram heavier then what a roller would be
Better acceleration and a higher top end then with rollers also
Take care and ride safely
Yours Hank
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"4wheels move the body 2 wheels move the soul"
Duty, Honor, Country. Those three hallowed words reverently dictate what you ought to be, what you can be, what you will be.
Douglas MacArthur