This off-road BMW G/S style BMW started out as a tired 1978 R100S to which I added White Power front forks and a KTM monoshock rear lengthened 4″ with 12 inches of travel. The first time I took it around the block I realized why BMW went to paralever rear ends on their GS bikes. Every time I gave it the gas the rear end shot up in the air and when I let off, it sank back down. It was like riding a bucking bronco. My friend Allan Varni was there watching and almost fell over laughing. Back to the drawing board – I designed and built a paralever rear end which solved the problem of shaft effect. This was in 1987, a year before BMW come out with their paralever. Should have patented it.