Shimano 10 - 11 system hub compatibility - MTB
Can I use Shimano 10 speed MTB system on this hub?


Yes, you can, but a 2mm spacer might be need.

10 speed Shimano MTB cassettes require same freehub body width as 11 speed. Meanwhile, Shimano road-specific cassettes are ~2mm wider. To be sure, I'd measure freehub body width (36.75 on that pic). If it's about 37mm, that means rear hub can accomodate wider 11 speed road cassettes and you will need a spacer for sure. Otherwise, you can put a 10 speed cassette as is.

On a side note, Novatec (Joytech) produces a wide variety of hubs, same models can have both XD, 10 and 11 freehub body options.