The GY6 engine design is a four-stroke single-cylinder in a near-horizontal orientation that is used on a number of small motorcycles or scooters made in Taiwan, China, and other southeast …

The engine comes in variations from GY6 50cc to GY6 300cc, producing 3-14 horsepower. Its top speed is between 30 and 70 mph, depending on the tuning and displacement. This makes it …

Do one or a couple of these GY6 50cc engine upgrades, or do them in groups and stages, or use all of these suggested GY6 50cc engine upgrades. You’ll increase torque, power, speed, …

Jul 12, 2008 · There are actually several different QMB or GY6 style 50cc engines out there. They can put in different cams and ignition modules for different purposes. there are known …

Instead of spending money for costly repairs to a tired 50cc 4-stroke GY6 or waiting for the repair shop, simply swap in this high quality 50cc 4-stroke GY6 139QMB gas scooter engine. This …

PRIMA DRAIN PLUG KIT FOR SCOOTER WITH 50cc QMB139 AND 150cc GY6 MOTORS A TOTAL NO-BRAINER! THIS KIT MAKES YOUR OIL DRAIN BOLT MAGNETICALLY …

Mar 26, 2012 · It covers roller weights, variator, clutch springs, carb jetting, etc and is specifically for 50cc 4 Stroke GY6 QMB139 engines such as on the Agility50, but some of it is useful for …

GY6 STORE 50CC 4-STROKE QMB139 COMPLETE ENGINE ASSEMBLY. LONG CRANKCASE. **THIS IS THE LONG SHAFT FOR 2-SHOCK SET UP** ENGINE (50CC …

After replacing your stock 50cc scooter parts with a GY6 Big Bore Kit 50cc upgraded 89.3cc up to 94.9cc you want to upgrade more GY6 performance parts to handle bigger engine …