![NCY Gear Set (16*42); QMB139, CSC, Wolf, 50cc](http://www.scooterworks.com/cdn/shop/products/1200-1269_a98c4b3e-991d-413a-ad32-e87ca454efc1_20x_crop_center.jpg?v=1695360697)
![NCY Gear Set (16*42); QMB139, CSC, Wolf, 50cc](http://www.scooterworks.com/cdn/shop/products/1200-1269_a_ff394b80-b148-40b8-b7db-7dc8b5ba0394_20x_crop_center.jpg?v=1695360697)
NCY
NCY Gear Set (16*42); QMB139, CSC, Wolf, 50cc
Description
NCY QMB139 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.