I'm in the process of sourcing parts for a new MTB bike. The frame supports e-type top swing front derailleurs, and 92mm pressfit BBs.
And I want to have a 2x11 crankset with a 40t/42t big ring and 28t small ring, and a bashguard, because the resulting gear ratios fit my riding needs perfectly (I have an old bike with a 42x28 crankset and a 12-36 casette). Also, I want to avoid grease marks on my pants and legs, hence the bashguard.
I thought this would be easy, however it seems lately the industry has shifted to adopt either 1x setups or 2x with 24-34 to 28-38 cranksets that don't support bashguards. That doesn't really suit me, not only because of the missing bashguard support, but because the highest gear, 38x11, is just a tad smaller than my current 42x12, and I still have room for improvement.
What I'm considering ATM is
Build my own crankset sourced from parts on Aliexpress, because, although I find some chainrings on other online stores, I can't find a crank that supports bashguards. And Aliexpress is loaded with offerings, but I don't quite understand the specs, and I don't know how to check whether the specs of chainrings and cranks are going to be compatible both between one another, and the BB. So how do I build a compatible crankset?
Taking a cheap Alivio or lower-end crankset with a bashguard and remove the smallest chainring. I might end up with a 40t/30t crankset in that case, but that's acceptable. Are there trade-offs here, and if so, what are they?
I'm overwhelmingly inclined to go with 1., but still considering 2., and alternative solutions are welcome; I just want a Shimano-compatible 2x setup with a top gear greater than 42/12 and a bashguard.
BTW, I'm aware the front and rear derailleurs have capacities when it comes to min/max sizes of front chainrings and the difference between the smallest and biggest one; I've found compatible derailleurs.