Bosch SX 30T chainring direct mount

[borre_mtb]

Hello,

Looking for a 30T chainring (yes a small one) for my bosch sx motor.
At the moment I have a "SRAM XX Eagle T-TYPE 1x12 Chainring for Bosch Gen4 | Direct Mount - black / silver 34T" chainring.
But I like something smaller.
I like to climb steep sections, and also sometimes with the engine off (yes, with the engine off )

As far as I found there is no direct mount 30T option, 32T is the minimum.

But I see that e-thirteen has a "Helix e*spec Bosch Gen4 Direct Mount Adapter, 104 BCD" adapter, that combined with a 30T 104 chainring gives me
30T on my bosch SX.
But at the moment the e-thirteen adapter is sold out everywhere.
Does someone know a different adapter of other solution for me?
I see that aliexpres has some spider adapters for bafang, but not for bosch.

 

[Mario Antony]

30T chairings have a thicker mounting, placing the chairing inward and changing chainline.

You have Mitch/RF/etc...
Just google for:
"104 adapter bosch cx"

I would definitely not go below 32t, and would use a 51t-10t //50t-11t cassette.

 

[borre_mtb]

30T chairings have a thicker mounting, placing the chairing inward and changing chainline.

You have Mitch/RF/etc...
Just google for:
"104 adapter bosch cx"

I would definitely not go below 32t, and would use a 51t-10t //50t-11t cassette.

Why not below 32t?
At my 'normal' enduro bike I also have a 30t chainring.

At the ebike I have a 10-52 cassette.

 

[Mario Antony]

Why not below 32t?
At my 'normal' enduro bike I also have a 30t chainring.

At the ebike I have a 10-52 cassette.

If you are using 104 adapter, all 30t chainrings have a "pad" on the mouting area, placing the chairing inward/moving chainline to the center.
For 30t, better direct mount.

32t and 30t 104 chainring
Check the bosses

 

[borre_mtb]

If you are using 104 adapter, all 30t chainrings have a "pad" on the mouting area, placing the chairing inward/moving chainline to the center.
For 30t, better direct mount.

32t and 30t 104 chainring
Check the bosses

View attachment 180679

View attachment 180680

Oke, understand. Thanks for the explanation.
Problem is, I cannot find any 30t direct mount chainring for Bosch gen4.
Do you have any advice on that?