Faster means need less weight more output. Shave seats, empty bike, run of half tank during sprint race, coolant reservoir put smaller, etc but not adviceble
Sprocket and gear ratiis depending u wan faster in top speed or accerleration
Bore up, carb upsize, fast throttle, remove airbox put cone filters like simota and knn
High octane fuel, remove power cut, lithium battery is way ligghter and better performing
Iridium spark plug. Exhaust mods
Do note its nt legal for some mods and fast bike must be able to stop fast too and means moremaintainece and 2t