FOR SALE: 1978 Kawasaki KZ650 Kerker Exhaust Backside - YouTube
Kawasaki KZ 650/750 4-in-1 Exhaust System Megaphone - CafeRacerWebshop.com
Amazon.com: Delkevic Aftermarket Full System compatible with Kawasaki KZ650 B & C (1976-1980) with Classic Megaphone Muffler and Stainless Steel 4-1 Headers: Automotive