my friend told me excitedly one day about the new RD250dx he described the speed block on what he called a coffin shaped tank, when i got one i was pulled in by a traffic cop on a triumph 650 bonnie he said that the coffin shaped tand was apt as all the yamaha RD nutters were going to end up in coffins, however once i made the jump to warp speed and got a RD400 the bonnie couldnt catch me!! so i was OK