Description
Primary Gear Kit Polini 13 44 Minarelli PULLEY Connecting rod: 85mm Stroke: 44mm Connecting rod: 85mm Stroke: 44mm Needle cage: 13x17x17 It is designed for Polini Big Evo 70cc cylinder You will have to adapt the weight of your rollers so as not to lose too much in acceleration Installing this Polini primary transmission allows you to lengthen your transmission ratio