it mentions 11 speed
If it's for 11-speed road cassettes (e.g. for CX), then you need a 1.85mm spacer to fit a 10-speed cassette, plus the 1mm spacer where applicable (not in the case of CS-HG81, but some 10-speed road cassettes need it)
Thanks. After a bit of searching, despite being branded mountain hubs, they use the same freehub body as their 11s road hubs. Spacer it is!
Excellent.
You just made my days being able to find an 650b wheelset with thru-axles and 11 speed spacing.
@atk started
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If it's for 11-speed road cassettes (e.g. for CX), then you need a 1.85mm spacer to fit a 10-speed cassette, plus the 1mm spacer where applicable (not in the case of CS-HG81, but some 10-speed road cassettes need it)