take 1 part KZ1000, 1 part GSX-R, 1 part SV1000 & mix!
Icon took a 1979 Kawasaki KZ1000, modified the frame to accept a monoshock, then bolted on the front end off a Suzuki SV1000, the swingarm and rear wheel from a '92 GSX-R750 and the shock from that SV.