Hi Colin, you will have to be producing a LOT of horsepower to pull a 24 T sprocket ! ? I’ve never seen one bigger than 23T. If you can find one you may find that the chain mills away the bottom channel of the gearbox tray. An overgeared Scott is not nice to ride… Much abuse of the clutch to get away from a standstill. If your mind is made up Alan Noakes can make you one from a smaller one by grafting on an appropriate sprocket blank.