I’m running that one as 15:72 with 440mm belts
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Ah thanks man. I will order those then.
I need a pair 
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When can we expect these to be in stock?
from a different thread
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Can’t wait! Can finally build a board when these come out
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Any updates? Got a buddy in need of these too
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They are produced but shipping with a batch of other parts that are not finished yet.
Looks like they will be here late September.
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BOO-URNS! 
@Boardnamics are these the same as the other mounts you offer? Apparently 72T covers the idler slot on the normal mounts 
What idler slot?
Not sure I understand. These are much bigger than the Caliber II mounts
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This is the end of the slot, I can’t push it out any farther
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Is the material thicker? BN270 isn’t compatible with Rockstar IIs and the MBS polymer pulleys, the pulley pushes the mount against the added neck of the hangar before the hearing touches the hangar face
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The 270s aren’t really designed for the massive pneumatic tires. They fall somewhere between a Matrix II and a regular 220mm hanger.
The Matrix II mounts are much bigger and beefier. They’re 8mm thick vs 6mm, which works out to nearly twice as stiff. The clamps are 13mm thick.
There is no cross compatibility between the Matrix mount and the Caliber II stuff. The Matrix is bigger in just about every aspect.
It has a fixed spot for an optional idler.
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Okay, time for me to do some science then 
hmmm is this on the new ones or all of your Matrix II designs… I didnt notice it on mine 
didnt look to hard when putting it together though.
Edit: Looked myself seems like this is a new design feature.
so what new ? of what I read you will soon selling belt and pulley for my boardamics matrix II motor mount kit ? just remember that i still running them since covid-19 and they holding up very well but would like to have some center treaded bars to add so extra safety
where you get your pulleys? from boardnamics?
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