AMA Motorcycle Hall of Famer Rob Muzzy is one of motorcycle racing’s most prolific and successful tuners.
AMA Motorcycle Hall of Famer Rob Muzzy is one of motorcycle racing’s most prolific and successful tuners. He worked for Kawasaki teams that won AMA Superbike championships in 1981, 1982 and 1983. His riders later won the Daytona 200 and the AMA Superbike Championship for Honda.
After starting his own aftermarket performance business, which thrived throughout the 1980s, Muzzy went back to work for Kawasaki and won the 1990 AMA 750cc Supersport and Superbike Championships and then moved to the World Superbike series, where he won two titles.
One of those world championship titles was earned with this 1993 Kawasaki ZX7R with Hall of Famer Scott Russell at the controls.
The year after Russell gave Kawasaki its first Daytona 200 win—and won his first AMA Superbike Championship—he earned a ride on the Muzzy-led Kawasaki World Superbike team.
The ZX7R he rode was a heavily modified version of the stock sportbike. It featured Kawasaki “works” pistons inside the four inline cylinders, each with a 71mm bore and a 47.3mm stroke. The transmission—another Kawasaki works part—was modified to support multiple ratios for each gear with an adjustable primary ratio.
The forks and shocks were Öhlins, with Dunlop tires on Marchesini hubs. Both the steering head and swingarm pivot were adjustable to allow for easily customized handling characteristics. Braking duties were handled by Nissin calipers and carbon fiber rotors.
All that Muzzy-tuned tech, combined with the exceptional riding skill of Russell, resulted in four wins that year—at Hockenheim, Brno, Sugo and Donington Park—and 14 second-place finishes.
To see this world-title-winning, Hall-of-Famer raced and tuned Kawasaki, visit the AMA Motorcycle Hall of Fame Museum in Pickerington, Ohio.
Photos by Alison Grogan