In Search of Perfection: Yamaha FZ1 vs. Kawasaki Z1000 Photo Gallery
Yamaha Fz1 Engine
The FZ1's engine was lifted from the 2006 YZF-R1 and "tuned for torque." This entailed reshaped cams, altered valve timing and an extra 5 lbs. added to the crankshaft for smoother throttle response.