TriRig BTA Riser - Is this Proprietary to TriRig bikes?

I’m looking for solutions to raise 2 bottles between my arms (back to back)

I am curious on the why ? Is it an aero, comfort or I need two bottles thing ?

Not judging in any way, just curious.

Two reasons
1 - I’m trying to find aero ways to carry an extra bottle (1 BTS, and 1 BTA already, nothing on the frame), which will allow me not to have to stop in a 70.3 and avoid a hyper concentrated mix in an IM (2 bottles of concentrate instead of 1 means its harder to make a mixing mistake, as at my last IM - 1/3 of a bottle is easier to measure out at each aid station vs 1/6).
2 - I’m trying replicate the effects of a bottle down the jersey by putting the 2nd bottle (if I can) in a similar position, if I feel that the setup is safe
Not sure if this helps but I had to rebuild my bike after a crash and set up my BTA perfectly with a combo of Profile design angled wedges and Tririg. I had to drill out some holes and recess so the bolt heads were hidden on the top wedge but it positioned the bottle perfectly.

https://profiledesign-au.com/...ts/hsf-bta-wedge-set

I haven’t set up my second BTA bottle yet but I’ll post a pic of my bike pre crash and how I had my second bottle set up for IM racing for the same reasons you have stated but under the extensions.

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