Variator rolls set 16x13x7 
Standard size and weight for the models:  
PIAGGIO: 
50 Nrg Rst Mc2 (96-98) 
50 Zip Sp 50 (96-00) 
50 Zip SP (06-13) 2T H2O 
Suitable for tuning on: 
HONDA, KYMCO, PEUGEOT, PGO, SYM, DAELIM, PIAGGIO, GILERA, GARELLI and CHINESE SCOOTER with Honda DIO (2-stroke) or SH (4-stroke) GY6 based engine like BAOTIAN, LIFAN, KEEWAY, HYOSUNG, MEITIAN, HUATIAN and many others. 
Tuning Tips:  
Light rollers are good for quick acceleration, stop and go riding and hills, but you loose top end speed. 
Heavy rollers will give you a higher top end speed (long roads) but you will loose low end acceleration. 
 
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