Might be worth contacting santa cruz for the proper spec..
Or look at the spec online :o/
F: Novatec D641 – 15x110mm
R: Novatec D642 – 12x148mm (XD)
Rim E13 TRS 30mm – 27.5
Spokes: DT Competition
They are the same £80 (retail) rear hub that’s specced on the base spec model for £2k less.You don’t get Hopes till you spend another £800!!
You’ll find them on £1200 hardtails.
Your expectation that they should be DT Swiss,Chris King quality is not totally unfounded given the £5.6k price tag but that’s an issue to take up with Santa Cruz.
To be fair if they did come on a £1200 hardtail you’d still be a bit miffed but maybe somewhat more realistic.
Still the responsibility to look after you lies with the bikeshop you bought it from.Them saying ‘we’ve done all we can’ is bollox.