Glixal ATKS-029 GY6 50cc 100cc High Performance A9 Camshaft 139QMB 139QMA Scooter Moped ATV

At first I was kind of skeptical because there are so many different sellers stating that their camshaft for the gy6 139 qmb is a A9 camshaft other sellers selling it for more or slightly less there's other brands that cost several times the price of this one I install this on my moped with a Big Bore Kit 47 mm which is the best for reliability and improve power without damaging the bottom end and allowing you to Rev this camshaft me and my bike sound more like a motorcycle not that it's aggressive but it's more powerful in the mid-range on up and it does the whole dash now it performs great I would buy it again and recommend it to others just make sure when you're installing it you're watching videos on YouTube first you might see the riding on there that says but the writing is supposed to be upside down and you're supposed to line up to two smaller holes on the left and right side with the slightly larger hole at the top to set the timing and make sure that the flywheel is lined up with the T so it's at top dead center or you will damage your engine

Eh the engine blew up before I could install it. Cursed part, yep mhm. Nothing wrong with it, it just whispers at night

Very good canshaft, its probably one of the best camshaft profiles, and cam characteristics for a street bike. Hotter cams usually sacrifices bottom end, but this cam is very close to an original cam on the bottom RPM and you may find small differences if you put the engine in a dynamometer, but for day to day driving I would say that the bottom end is the same. The benefit with this cam is that it doesn't run out if breath but continue to go strong and pulls with very good authority on higher RPMs. Most installations is bolt on, but the cam has a bit higher lift, and you have to check for coil binding and valve clearance. Turn the engine by hand over a few times and check for bind, if no valve contact or coilbinding, youre good to go, its ordinary routine when installing a cam, and should pose no problems. I have used this cam on both small and big valve heads and for me so far, it has been a straight bolt on.

I used this cam in my 89cc qmb139 big bore kit. I bought the larger head and cylinder separately. Make sure to get the correct rocker arms to go with the head. I did have to grind on the rocker arm cage to get the cam lopes to clear. With this cam and any big bore kits/parts from Glixal make sure to dry fit everything so you know everything has clearance! I spent a couple if hours doing it with a dremel and different grinding bits/ sanding drums. If youre willing to modify new parts a lot to get them to work together than Glixal is ok to use. After all the work the moped fired up and ran great this cam has a huge amount of lift compared to the factory cam. I noticed a lot more torque. I dont think I would use this cam in a stock engine. I havent had any issues with this camshaft but it was a lot of work to get it to work.

Came in perfect condition. Bought it to replace a cam that came with a big bore kit. It looked like someone toss it down a rocky slope. Now honestly I can’t say what a difference it made because I replaced it along with a big bore kit which all together mad a big difference. Aside from that it is smooth running and has a different sound than the original cam had.

This fit my sons 2016 Kawasaki KFX50 ATV perfectly. Make sure that when you are installing it you install it with the medium size hole on top and align the two side dots with the top of your cylinder head

Woke up and released even more optional.

Easy to find TDC and adjust the valves perfectly on time. Started on first try on my rebuilt 50cc into 80cc. Identify markings make the installation go error free as if your upon the TDC on the engine.. Runs faster than before with P.a.i.r cylinder head and 80cc piston & cylinder. Now its gone its maximum speed of 50mph !

Fonctionne parfaitement bien de très bonne qualité très content de mon achat je recommande

muy bueno

Doesnt lift the valves any higher, but holds them open for longer allowing more fuel in. Stock 50cc gy6 139qmb gave good results - instant change to acceleration and pickup. Best upgrade for a stock bike, essential if your planning to go for a bigger kit ( we went naruku 47mm /72cc bore to get themost from it)

Arrived on time and fits well

50cc gy6 139qmb,glixal A9 cam. I have standard factory 69mm valves and rockers and as you can see the cam lobes collide with the rocker assembly and the head!! Too far out,Will not clear I'm gonna have to Dremel lobes myself, kinda defeats the purpose. You'd expect to drop in and it works or am I crazy? It's nice looking but that's about it so far, hopefully it doesn't blow up my engine fingers crossed.