KH Spirit hub compatibility

Absolutely – unless there was some other feature of the Oracle frame you really wanted (like the rounded crown) and you really wanted the Spirit cranks and outboard disc. The d’Brake now comes with a bracket to stop vibration/juddering when you brake but unless you have a compelling reason to go that way, and are buying a new frame, get one with a tab of the correct side for whatever brake system you choose.

Anyway, here is a link to a reasonably close up photo of the outboard brake on my KH26 with a Hope brake and 200mm floating rotor. I’ve also got a Hope E4 brake on my Hatchet (inboard) with a Hope 200mm floating rotor so you can hopefully get away with any brake you want regardless of if you choose an inboard or outboard brake.