I sent Twisted Throttle an email last night. I've already recieved a response as of 8:30 this morning. Pretty nice customer service.
Here are some details and a link. Looks pretty cool. Not lockable with a key like the Luggage Locker, but something could probably be arranged.
Anyway, here's the email with an explanation and a link to product with full pics down the side.
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The SW-Motech system has a horse shoe shaped ring that bolts on top of
the gas cap filler plate with longer blots. The bags have a similar
shaped horse shoe ring that you mount to the underside of the bag. The
rings fit together by the tabs at the open end of the horse shoes
sliding into one another while a spring load pin at the top of the
horse
shoe ring secures the rings together. If you click on the following
link
and take a look at the pictures running down the right hand side you
can
get an idea for how the bags sit on the tank and secure to it.
https://www.twistedthrottle.com/trade/productview/2131/441/
Because of the quick release, just pull the spring load pin back and
slide the bag of the ring, the bag comes off easily and with the horse
shoe shape of the tank ring the gas cap can still swing open
unrestricted for fueling.
Hopefully this answers your questions and if you have any more please
feel free to ask.
Regards,
Dereck
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Further communications:
Andre,
I can sell the bottom ring to mount onto the tank, but I can not sell the top ring that mounts to the bag without a bag.
Regards,
Dereck
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Looks like a decent product.