High engine kit 177cc Ø63mm with cylinder head POLINI EVOLUTION aluminum STAR LML, DELUXE, VESPA, TS, SPRINT, VELOCE 125,150cc

Large 63mm diameter kit, offers 177cc real in combination with the original 57mm crankshaft stroke. This evolution version has improved cooling and performance. It consists of a high quality aluminum cylinder treated nicasill with diagrams revised upwards, a piston high quality bi-segment to maintain good compression and excellent torque. It comes with its high compression yoke to deliver the right compression ratio. This is one of the most efficient thermal units on the market for LML STAR DELUXE, VESPA PX, TS, SPRINT VELOCE ...

Also available in special version long race 60mm.