this bike/ped is one of the most wonderfull machines i have ownd loads of these the best is my aerox at current but befor we start their are reliable issues with the aerox 100 not the 50 the 100 will brake easily but still a good ped right the aerox 50 is one of the most crapyiest bikes unless derestricted i baught mine 2nd hand with 5 previous owners was a bit tatty it was semi derestriced so the work began new full plastic set in burnt orange/rusty look but looks the part a mallosi clutch, belt and rollers, polini 70cc kit a racing crank carnt remember who from probly polini or tnt somthing like that not that too much of a dear one new main bearings a digital ingnition stage 6 pully/variator and stage 6 sports exshaghst blue leds cromed the rim of both wheels bar conversion tnt jack up kit straight kick starter lever a 17.5 tnt carb and aftermarket clutch/variator housing cover, digital clocks and a cigerett lighter socket this bike with out these parts but properly jetted and the correct rollers on this bike with a little waight shifted back the frunt wheel will go light and i carnt say top speed as iv had standard peds do 45-60mph now my current bike with these parts is amazing its made for quik bursts round the back streets and accelerates that fast from a rolling abou 5-10mph and take the trottle off and put it back on quik full it lifts and shoots to a 73mph the handeling is amazing the bike overall will last you ages just change the gear oil spark plug and change piston and top end gaskets evry say 4000,miles not even piston just the rings and gear oil and use good 2stoke and it will last ages a mean ages just watch out for letric start going people buy new startor motor relays etc its never ever haped to me only to 3 of my freinds and all 3 were just a fuse near the battery that is hidden a couple cm,s toward the frunt wheel from the battry put the wires out and change the fuse maybe it will fix it all round amazing bike i have used this bike for evrything little stunting little rides along path ways in forests etc never had any problem wat so evry top bike worth evry penny will never get rid of mine even when i have a r1 will still have a aerox