What spec bromo are you looking at? The N8 (the first google result) is pretty well specced, the slacker head angle, 38 elite and x2 make it a far better choice for an Enduro bike than the focus. The wheelset and battery arent as good as the focus but there's aftermarket batteries available for...
You could probably find a 12sp deore take-off groupsets cheap enough on marketplace.
Tbh I'm not even sure what you are trying to do, run the wheelset off your bazongo on your Jam2? I wouldn't bother, just get some road tyres to fit the jam2, or just wear the magic Mary's on the jam2 out on...
You'll want 15x110 front and 12x148 rear with the appropriate driver on the rear for your cassette. If it's Shimano 12sp it'll be microspline if it's something else it'll be something different.