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ASG Lonex Ultimate Cylinder Head for Version 2 Airsoft AEG Gearboxes

18 Customer Reviews

by Noah H. on 08/20/2021
"This is a great cylinder head. The construction is phenomenal. You can tell how solid it is just by looking at it. The o-rings are all very high quality. The pad on the back is nice and thick. The double o-rings are great! They seal INCREDIBLY tight in a Lonex cylinder. So tight that I had to remove an o-ring to get it to fit properly in the cylinder, and the air seal is still perfect! The pad on the front isn’t super necessary, but it’s nice to have anyway. The is a great cylinder head for the price.
by Velvet D. on 09/24/2019
"This Cylinder Head is perfect.

It's a super tight fit into the cylinder, nearly required a bloody hammer to get it in! There just is no way any air is going to leak around this head and when paired with a guarder Reinforced Piston Head the compression is 100%. You wont loose any air at all.

100% recommend this for anyone looking for perfect compression.
by Vakhtang S. on 03/12/2019
"Really good one. front ribbon ring minimize danger of case crack.
by Andrew H. on 10/07/2018
"worked great in my g and g cm16 dsg
by Andrew H. on 10/07/2018
"Put it inside of a g and g raider with a dsg, a gate titan, etc... and it works great
by nathan t. on 02/04/2015
"Ok so most people above say it doesn't come with the rubber part on the front. This is not true mine came with it. I paired mine with a high quality cylinder and tested my air seal. Also paired with a vfc air nozzle the air seal was spectacular. It feels a bit light and almost like plastic but thats cnc for you. 5/5 i would reccomend it.
by Bryce B. on 01/25/2015
"this is not a bad cylinder head at all. its actually really good when it comes to keeping an air seal. the dual o-ring really does its job. Other reviews have said that the rubber seal on the front of the cylinder head never came on theirs. Mine came with it and it does help to preserve the front of the gearbox. while installing other parts i did notice that the buffer pad on the back is very loosely glued on. It did fall off. so beware of that. Overall this product is not bad and i would recommend it to all, just re-glue the buffer pad and no doubt will you be shooting at least 35+ fps.
by James M. on 02/03/2014
"This is a great cylinder head! I put this in my gun and with a m110 its shooting from 395-403. The double o-ring is great and paired with a thick o-ring on your piston head there's going to be almost no leakage
by Justin S. on 10/17/2013
"THIS. IS. AMAZING.
After putting on some teflon grease on the o-rings, I installed this into my friends A&K M249 Para.
Man... that air seal... combine this with the JBU piston with full steel teeth and the air seal is just perfect. NO AIR ESCAPES.

Pros:
-double o rings (prevent any air from escaping)
-rubber like sobropadish thing on the back of the head (less stress on the gearbox)
-fit PERFECTLY
-aluminum (pretty thick so it wont break and is very durable)
-CNCed (means that its made from a solid block of metal if you didn't know which means there are no/almost no imprefections)

Cons:
-hard to get into the cylinder at first, but with some muscles, you can get it in
-not having this

Last thoughts:
Buy this for that max air seal and if you want a colorful gearbox
by Leif E. on 08/15/2011
"Just installed this the other day in my echo1 MP5 ris-1 along with an ASG piston head. They both look flashy and provide a near 100% airseal. I recommend!
by Calvin H. on 08/19/2022
"Very good air seal, however super tight fit with my stock krytac nozzle so be careful.
by Cynthia R. on 09/07/2014
"So far this thing is great, however one thing to be noted, mine did not come with the shown rubber buffer around the front, which is ok I guess. On the bright side though, this thing loses NO air at all. All in all it is a great product
by Destin L. on 12/21/2019
"This seems to be a good cylinder head aside from the fact that it was incredibly difficult to install in the Lonex stainless steel cylinder. This is very hard and can make leveling the cylinder head quite tedious. Luckily, this didn't take me too long.

Pros:
Likely to have perfect airseal

May work with bore-up cylinders

Has trumpet-shaped hole in the back to increase airflow efficiency= higher fps

Rubber pad on rear

Cons:
The tube on the front has an unusual outer diameter and did not maintain a good airseal with an shs air nozzle. I had to go back to a stock KWA air nozzle which achieved a vastly better airseal.

Difficult installation
by Levi C. on 05/31/2018
"Just ordered this to drop in my G&G CM16 Mod 0. Overall seems to have a good build quality, tight fit in the cylinder for a good air seal. The rubber seems very hard so I was concerned about it being to loud and not absorbing enough of the shock. I have only fired a few dozen shots so far but seems fine. I paired it with a Lonex ball bearing mount piston head. 3 stars because I had to modify it to fit my V3 gear box. The holes do not line up with the holes on my gear box, I had to grind some rubber off the front and in the holes to get it to fit. Not too hard with my dreamer but definitely was not right.
by kyle s. on 12/17/2016
"WARNING

Would not work in g&g m4s
Would not work in any ares style gearboxes (elite force m4s) Installation felt great but it was sliyghtly to long and will cause you gearbox to lockup. I installed these on stock guns as well and the gearbox shell flexs a hair and Puts the gears on a slight angle causing them to grind to a halt. Adds a great sound to your gun though. Sounds like a paintball gun really.