Pay in 4 interest-free payments of $16.25 Learn more
Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
and 139QMB and GY6 bikes with 12" rims
* Patent pending
Installation Note: Orientation is critical
SKU: 1200-1212
* FIRST 50 Rieju
NCY Gear Set (16*42); 139QMB, CSC, Wolf, 50cc vee and 139QMB and GY6 bikesNCY 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.
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