When the Yamaha fz launched that time it was only such bike in 150 cc class with sport looks and handling but after few years Suzuki and honda just nailed it.they provided more sporty and powerful bikes . Yamaha just lagged here in case of power . Yamaha comes with Displacement of 149 cc .
Cylinders Max Power13 bhp @ 8, 000 rpm
Maximum Torque12.80 Nm @ 6, 000 rpm
Bore57 mm
Stroke57 mm
Valves Per Cylinder2
Fuel Delivery System= Fuel Injection
If you are a Yamaha lover then okk but if want more power and looks then Suzuki gixxer and honda hornet are best bikes