The FZ6r uses 41mm forks, the FZ6 uses 43mm forks, you could try an upper clamp from a 03-04 R6, not 05's they came w/ 50mm forks, or the 06-07 R6s, same bike with different name,they both use 43mm forks, but stay away from the 06-13 R6r, it uses 50mm inverted forks.