The strong low-end and mid-range performance make the Yamaha FZ-S FI a fun bike to hoon around in the city. Pulling off idle, the torquey engine starts pulling at around 2,000 rpm right up to 8,000 rpm, although the sweet spot lies between 5,000rpm and 7,000rpm.
However all of this pales in comparison with the Gixxer SF Fi, even with its seven kilogram disadvantage. The broader torque spread and lighter throttle makes it feel livelier. And while the FZ-S FI loses steam past 7,000rpm, the Gixxer SF Fi keeps going until you hit the red line at 9,500rpm. It is hard to abstain from playing with the throaty exhaust note, and it doesn't matter if you are commuting or running errands. Even on the highway, the Gixxer SF Fi has a distinct advantage thanks to the better top end. It can manage lower triple digit speeds over long durations without breaking a sweat. The same cannot be said about the FZ-S FI.
Suzuki Gixxer SF Fi – 7
Yamaha FZ-S FI - 6