Old or damaged air hoses can cause:
SIP Performance Uprated Vespa Spring Rally Super PX Uprated Clutch Spring Set (6)
Light Switch (non battery)
so extreme port timings and piston-ported cylinder layouts should be avoided
Simplified layout for easy installation
BGM PRO TOURING Vespa V50 V90 V125 PK 1600g 12v Flywheel chaincase Old or damaged air hosesBGM PRO TOURING Vespa V50 V90 V125 PK 1600g Flywheel BGM8033RT: Vespa Smallframe 1600g, small cone, M10 V50, 50N, Special, SR50, Sprinter, SS50, SS90, V90, 90 Racer, V100, ET3, PV, PK S Suitable for all smallframe engines with small cone (pole nut M10, SW14 or SW16). These engines always have a contact ignition ex works (exception ET3 PK). Here, by converting the pole wheel, ignition and vehicle wiring harness, a modern vehicle electrical system is