ok I have to chime in here :-)
Yukon Zip, Air actuated lockers are forged and 4340 case and internals. Very strong, so strong they believe in em enough to give a 2000$ collateral damage warranty with each one. SO if somehow you blow one up and it takes out a ring gear and you need new bearings and labor to fix it right, Yukon will cover all that up to 2000$. Who else does that or offers anything even close to that?
That video you see on youtube is of a first design, NON released air locker and they are not made in china as they say. ARB is VERY upset at the whole competitive, more realistically priced air locker option Yukon has came to the market with and is ALWAYS bad mouthing and passing on False info, to sway the consumer. Does ARB make great products, You Bet Cha! Does Yukon make great products, Hell Yeah.
But when you compare a 1100 retail price to a 733$ retail price on equal products that operate exactly the same, feel exactly the same and you can not tell the difference once installed, but the lower cost one has a warranty that is outrageous and the high priced one has a very basic warranty. Its hard to NOT go with the obvious choice.
Not to mention the Yukon Zip (and grizzly auto locker - like a Detroit but stronger and quieter and same warranty) is machined SO MUCH nicer and looks like a better built piece when holding it in your hand.
Just wanted to add some info to the thread.