D33BZT3R

Suppose that's the best and only option and they only push 75-80 want to make 100mph but would do big bore as never trusted them I already have the Leo vince GP exhaust system and the bike has done 40,000miles so it's delicate already I was play on changing sprockets different ratio but don't think that would make much different I would like big air filter re jetted and a whole engine rebuild I'm talking race cam,push rods,valves ,crank,etc the whole job lot and on top I might put the 150cc on but that's a massive debate atm but much thanks to the advice I will let you know what I do with my bike cheers

Is there any parts to make my bike faster I have a rival on the roads (Yamaha YZF R125) I need upgrades to go faster but don't want to ruin the reliability