It's child's play on the SRAM non-hydro levers. I have not tried on hydro but it looks to be mostly the same process: https://jeffsbike.blogspot.com/2020/05/curing-1x-sram-1x-to-2x-shifting.html?m=1
If the bike you're referring to is this one, then it looks it doesn't have a left shifter paddle so you'd have to source that somewhere
Ah, good spot. Also: bugger.
@Dammit started
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It's child's play on the SRAM non-hydro levers. I have not tried on hydro but it looks to be mostly the same process: https://jeffsbike.blogspot.com/2020/05/curing-1x-sram-1x-to-2x-shifting.html?m=1
If the bike you're referring to is this one, then it looks it doesn't have a left shifter paddle so you'd have to source that somewhere