Burns, cloud9 and a King on the stock. Burns, Tnn 18t and a Pro 2 on the 24", Try-all cranks and a FFW on the mod. Oh and Burns and a King on the MTB. FFW compatible Burns would be awesome but wouldn't they have to change the tooling they use as the section with the splines isn't deep enough to change to a threaded section? I'd also put more dish on them for clearance reasons.