Light Bicycle rims are awesome.
https://www.lightbicycle.com/55mm-deep-carbon-700C-25mm-wide-road-rim-clincher-U-shape-tubeless-compatible-with-basalt-braking-surface.html
Best bet - but people are sharing tears of pain from the strength (technique) needed to mount tyres on the TLR rim bead.
DT 511 DB is 25g lighter.
@hippy started
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Light Bicycle rims are awesome.