Originally Posted by
rccardr
Shimano STX-RC series cranks used 58bcd inner rings that go down to 20 teeth, can be found on the big auction site for around $65-70.
Race Face made 94/58 bcd triples too, and they are likely lighter than the Shimanos. But like 5X the cost.
Pretty much everything else that gets down to the 20 tooth mark is more modern 4 bolt mountain bike stuff. Might be lighter but has a higher ugly factor IMO.
this^^^
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