its gunna crack/snap at the drop outs and chainstay/bb join. there isnt actually any point in having them disc tabs cause they will snap off as soon as you use them. it isnt anything new at all really, slightly different shaped downtube to a zoo, apart from that and the dropouts/bb, chainstay join its a pitbull. is this a proto then? i wish i could work with a company and develope a propper beasty bike, that is just inspiring... we all bitch koxx but they seem to be the only ones who develope and push things forward... the new koxx boxx is a prime example, just a shame about the price.