Sealed cartridge with rebound and compression. Light weight. Easy enough to pull the lowers and change travel. Compression tune is great for 200 + weight people. Or ton's of support on steeper downs with the front brake on. Air spring uses a two stage coil negative spring much like Fox uses.

No oil lube in lowers just a little grease. Warning stickers says warranty void if disassembled. In these times with two big manufacturers enabling their users to tune there forks to ones own preferred settings the Epicon lack stands out. The cartridge isn't co-operating so I haven't figured out how to remove the oil to change to a lighter weight without damaging it.

For a low cost fork I am very impressed but that just leads to frustration because I know it could be a lot better with the right tune.
Suntours web site is great for very basic service.
Currently no word back from customer service .

Will update further.