NCY Gear Set (16*42); 139QMB, CSC, Wolf, 50cc vee Parts guide for all Vespa

Parts guide for all Vespa GSs manufactured from 1955-1963 has exploded diagrams and part numbers (VS1-5

* FIRST 50 Rieju

Clutch/Gear

Agility 50 SYM Fiddle / Mio 50cc Lance Cabo 50 / 150 Various GY6 / QMB139 50cc scooters with disc brakes (M8x1

Mid-Race Performance: Polini Corsa 70cc Iron Cylinder

NCY Gear Set (16*42); 139QMB, CSC, Wolf, 50cc vee Parts guide for all VespaNCY 139QMB upgear kit for your 50cc 4 strokes is finally here! This kid is made specifically for big bored engines and increases your gear ratio by 24%. This will allow you to maximize your big bore kit by increased top speed and a more usable rev range. You won't see much if any improved performance if you install these on a stock top end.