Someone's fucked up in the past
And it was Specialized. They saved about $1 by not using a proper cartridge bearing IS headset in the first place.
I recon someone in procurement pressed the wrong button and ordered 20,000,000 bearings races so they designed the headspace to use them up. They put them on so many otherwise good bikes.
@Chaley started
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And it was Specialized. They saved about $1 by not using a proper cartridge bearing IS headset in the first place.