Glixal ATMT1-008 Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart

For the win. It was easy to install, and fun way to enjoy your weekend. The product offered just makes your moped run like it should.

Worth it gives low end power.pulls through midrange better.

I installed this kit with the help of a YouTube video almost two years ago. I installed the kit, put fresh oil in it, installed bigger jets. Tuned the carb and it’s been running rock solid for two years!! I fill it with premium gas every time to avoid detonation because of the now higher compression motor. Not sure if it’s a big deal but I’ve had great success with this kit. It has about 30% more power than my stock scooter did. It is now enough power for our 50cc (72cc now) to carry my wife and I around town with speeds up to 45mph! (Downhill) about 35mph cruising on flat ground.

The media could not be loaded. it was easy i didn’t do it but my cousin did and he was geeked up so yea it runs just needs a bigger carb and a airfilter

Absolutely phenomenal product for the money. The quality in this kit is better than the original parts, (which for a Chinese scooter isn’t really saying much, but still)Extremely easy to install, it took me 30 minutes to disassemble my old engine parts and an hour and a half to install this kit and replace the main jet in my carb and get it running smoothly. (I am a highly experienced mechanic, but it would take someone with basic engine experience 3-4 hours total)Break it in the way you think is best. Just remember to warm it up before doing so every single time for at least the first 20 miles.It comes with more parts than you really even need, new studs, new nuts, new exhaust gasket, new umbrella seals for the valves. It’s really all there.This kit got my scooter from going about 35-40 to about 50-55, maybe more. Before, I could do about 30 on flat ground and 20 uphill, now I go about 40-45 on flat ground and 30-35 uphill.The biggest difference is the worst part of a 50cc scooter: immediate takeoff power. Before, it would have some trouble leaving a stop sign or in grass, now I have to be careful to not give it too much. Zero to 15 mph is a 250% increase in power, the rest is definitely better but nothing to exaggerate about. This kit will definitely make you feel glad you didn’t fork out the cash for a 110cc scooter, because it’s basically the same performance in a smaller package now.

Make sure to buy better gaskets or gasket sealer because the paper gasket that comes in this will leak at least four out of five times. I’ve only done one kit that hasn’t leaked.

Everything I needed to rebuild my GY6 50cc motor. I honed the bore to make sure it was clean and smooth. Other than that, perfect.

Great bbl kit. Not too hard to install but make sure you do your planning and research. YouTube has a few great install videos. Take your time and gap your rings correctly. Make sure your valve lash is correct! You must upjet your main jet in your carb. If you run stock mainjet it will trash your scoots engine. No matter how you plan your break in, replace the oil after you install and after about 10 hours, then again after another 10 hours. Tighten your head bolts to 13-14 torque foot pounds, also known as 19 NM.I get 40 mph out if the scoot now with no further mods, other then a cone air filter. I use a 33 pilot and a 94 main jet. Set you needle second from top (slightly rich).You can reuse your stock 33mm valve head but I recommend a bigger 47mm valve head to keep pressure and CHTs lower. You will decrease the life of your crank but that expected. Do your homework.