This Polini 70cc Sport Cylinder kit is the most basic 70cc cylinder kit upgrade Polini offers for the Yamaha Zuma. This reliable Zuma cylinder kit can be used with the stock carb and is great for everyday riding. Minor jetting is needed.
Applications:
Yamaha Zuma 50cc Horizontal
Jog Clone engine
Minarelli Horizontal
Air cooled
Spec:
Will work with stock Crank.
47mm bore
10,500 RPM
8.5 HP
Long thread
Cast iron Cylinder
10mm piston pin
RACE PART... USE AT OWN RISK. NO WARRANTY ON ANY CYLINDER KITS