Scooter / Motorbike

Accessories

Mini Quad / UTV

Shop By Engine

Custom Wheels

New Secondary Gear Kit NCY 18/46 for GY6 139QMB/QMA View larger

Secondary Gear Kit NCY 18/46 for GY6 139QMB/QMA

1200-1270

New

NCY QMB139 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.

CAD$ 86.99

This product is no longer in stock

6 other products in the same category: