A chance to get a rare kirk revolution 400 I bought in the 1980's for a lot of money.This bike has only done 150 miles from new! It was designed by a British Aerospace Engineer and has a magnesium alloy frame. The bike was featured on BBC's"Tomorrow's World" which was a programme for future designs and products.the bike has just a couple of marks due to being moved around in the garage over the years. The reason for sale is I have a back injury and thought I would be able to get back on the bike but this seems unlikely so I am reluctantly putting it up for.