engine case Polini Big Evolution black matte for Minarelli horizontal long 170.0306 fitting for Aprilia Scarabeo 50 HS 1997, 3,1 PS, 2,3 kw

Polini Big Evolution variator cover for scooters with horizontal Minarelli engines with long crankcase. What sets the Evolution apart is the integrated primary drive shaft bearing and the 23 milled vents which provide maximum ventilation of the entire drive unit. Two special nuts with different threads for the bearings are included in the delivery.