It does subside once you pass 55kmph but tends to creep back at around 80kmph, close to the Passion Pro BS6’s top speed. The inconsistent panel gaps, use of flimsy materials and the cheap switchgear quality on its products are … Top Speed. As reported by the Passion owners in India, the real mileage of Hero Passion Pro is 60 kmpl. Hero Passion Pro top speed is 90 kmph (real top speed figure). Now you get Fi in Hero Passion BS6 due to which the performance of the bike increases even more, in Hero Passion Bs4 you did not get Fi, in bs4 version you get Maximum Power 9.8 Bhp @ 7,500 rpm and Maximum Torque 8.79 Nm @ Generates at 5,500 rpm, In Hero Passion BS4 you used to get 4-speed gearbox with 1-cylinder but in BS6 you get 4 speed gearbox, in Hero Passion BS6 … Sure, Hero has made some major strides in terms of design, features and technology, but build quality is a whole different story. Hero Passion Pro BS6. Inconsistent build quality is a letdown. In terms of performance, the 113cc commuter motorcycle can accelerate from 0-60 kmph in around 8 seconds. Performance.