Polini Evolution Front Pulley - Minarelli Horizontal & VerticalThe Polini Evolution Drive Face gets better cooling through its larger cooling fans. Made of light synthetic materials and adjusted to Polini's variator pitch, it's easy to change. Higher RPMs made possible through weight reduction. This will fit both the horizontal and vertical. Applications Yamaha Zuma Aprila SR50 MBK Booster

The 9th stage is the Forsa factory setting

CNC Machined

we recommend using the 140cc/min injector

Thanks to the small round screw cap

This includes the C3

We used an aftermarket round slide carburetor with our GY6 spec jetting engine

Plus/Minus 20% at Min/Medium/Max

Yamaha Zuma 50cc Horizontal

Yamaha Aerox 50cc

Benefits of Dr

UNI Air Filter

KOSO DB-02R LCD Gauge is made for street-oriented bikes and scooters