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zmjones_
The chainring maxes are always conservative. Factor said the biggest combo that would fit on the LS was 50/34, but 52/36 was comfortable in the end. I'd be genuinely surprised if a 50/34 wouldn't fit on a Crux. But if you're using it primarily as a gravel bike, a 48t big ring is likely plenty (unless you have #rocketwatts)