Obligatory, “that’s what she said”. I’ll open it up in a bit.
Out and about right now:
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Power and current ratings are higher compared to SK3. Hope it’s bigger.
Nice, what mount is that? Did you have to cut down the shaft?
It’s the hobby king mount on the hobby king trucks. The shaft is longer because it’s meant to fit inside the gear cover that has a bearing in it to support the shaft. Their components work very well when used together.
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how sketchy would this be? I’m very tempted to use these on my TB218’s
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The old eSk8 hobby king motor was a 5035 (advertised), this new one looks like it is 5045… good thing! don’t know about the SK3…
Seems that in a dual config they will only fit the Trampa offroad trucks.
Someone have a pair and 218s to check?
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Ying yang… 
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I just so happen to have an SK3 6374 & 6364 on my bench in pieces. The 6374 stator is about the same size at 50.6mm diam. X 45.6mm tall. The 6364 is the same diameter, but only 35mm (closer to 36mm) tall. Off the top of my head, the SK3 6354 was 25mm tall, and the Torqueboards 6355 was 30mm tall.
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So, in summary, this new turnigy sk8 6374 motor has approximately same stator dimensions (and likely copper mass) as previous motors, however the can is longer.
(Correct, Any EE guys or esk8 elders care to chime in?)
-there is a small key -Can + shaft collar measure 89mm, making a dual set up on single truck (of the 218 TB variety) unlikely.
Been running the orange ones forever on a bunch of setups and love them!, these are even better…funny how the thread blows up when they change the color to blue! You superficial women!
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Yeah, I was hoping maybe they saw the issues we were having with dual mounting and compresseed it closer to ACTUAL 6374… but heres to hoping, they double downed and added a few mm, lol.
Oh well, I just got the sk3s sorted on Surfrodz trucks with psycho mounts. I better get my “WIDE LOAD” sign ready…
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Depends on the level of risk your happy with and how fastidious you are with maintenance. I think it could work. I once had a rear wheel come off while ridding (different trucks) but it was due to the nut being at the end of the thread and the nut was kinda old so the nylock was worn. I was not going that fast and as it was a rear wheel it just dragged on the ground so it was not dangerous in that situation.
If you do it, use fresh nuts and maybe some lock tight. Also check they are tight regularly.
(Alternatively cut 5mm of each end of the hanger to make it really safe.)
Edit! Actually I dont think that will work if your already pushing the motor mount and wheel all the way out to fit the motor, more axle towards the inside won’t help. 
The orange motors are shorter, 5035 stator compared to 5045 on the new blue 6374…
They even look shorter in your pic dude 
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According to the spec listing the orange one is about 10mm shorter than the blue 6374. According the post above the blue one with the bump at rear measures 89mm total length. Why hobby king does not list total length I dont know?
@squishy654 how much axle thread is past the nut? And how much gap between the motors?