Originally Posted by
70sSanO
If you can live with a 38t instead of a 40t, you can buy a 38/28 2x and swap the 28t for a 26t or 24t if you need to.
John
I lived with a 40T 1x for a little while. I don't think I want to go any lower for dual purpose bike that sees road a lot with road tires.
I am thinking about one of these. I am not sure how good they are. Going to try and find a shimano crank if possible.
These both have the 104 BCD for the outer ring. I don't 'think' there's anything special (notches, offsets, pins, funky bolt pattern ) about there outside ring.
FSA K-Force Light ATB MTB Crankset 170mm 24/38t Double 4 Bolt
https://www.ebay.com/itm/19477171067...Cclp%3A2047675
SRAM X9 BB30 Crankset42/28T BB30
https://www.ebay.com/itm/27537296764...Bk9SR7rUj7iZYQ