Motorcycles Sport 8301 PSN . 2011 Kawasaki Ninja ZX-6R M4 SLIP ON EXAUST! Pound for Pound the Mightiest Middleweight Sportbike in History Technological tour de force. Apparently some things never change. Packing a liquid-cooled 16-valve inline-four (the first ever in a middleweight streetbike) wraparound twin-spar frame anti-dive fork and aesthetics snatched right from the Grand Prix circuit the original ZX600-A1 was a dominant bigger-than-life middleweight. Thats the only way to describe the original Ninja 600 sportbike of 1985...
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