NCY Gear Set (18*46); 139QMB, CSC, Wolf, 50cc

DESCRIPTION: NCY 139QMB upgear kit for your 50cc 4-strokes is finally here!This kit is made specifically for larger big bored engines and increases your gear ratio by 26%.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.For experienced tuners only.
139QMB ENGINES: upgear kit for your 50cc 4-strokes is finally here! This kit is made specifically for larger big bored engines and increases your gear ratio by 26%. 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. For experienced tuners only.