Is anyone aware of a similar chainring chain guard that attaches with a different system, like clips or similar?
The New Brompton spider crankset made by Stronglight is a specific 130 bcd chainring with a separate set of mounting holes
for a plastic snap in chainguard.
but the intention is not a derailleur triple so wont have the shifting features .
Swiss made Florian Schumpf has chainguards that are dished to eliminate the spacer.. CHF
But as typical in CX single ring setups there were 2 guards ..
2 decades ago I got a chainguard ring for a 50t. but that was long ago I think it was
thru Nashbar , but of course they dont have any now.
1 was in place of the inner ring, the chainring in the outer position, spacers then the outer guard flange.
Bike Friday also has their own sources of guard rings .. they have retail sales..