My cruiser has just been run-in at 450km so I installed a denso iridium iuf24 plug this is my first little mod so far, I just maxed it out last night and I got -
1st gear: 35kph
2nd gear: 55kph
3rd gear: 65kph
4th gear: 85kph

It hauls scooter ass, A 90cc mini-chopper gave me a good run today we were fairly close he had a tiny bit more acceleration than me