70cc

I recently bought 2 coolster 70's. Does anyone know if the company has a warranty or how to get ahold of them? The "dealer" I purchased them from is refusing to do anything about the broken products stating he doesnt warranty any of the bikes even though he is a coolster dealer. Only taken them...

Ok so I have auto 70cc motor on a mini bike frame and I'm having problems with battery/charging wire section of wiring. I ha e done a simple 4pin wiring setup on motor and I have now installed battery. Battery worked goos for a few days but eventually went dead, i recharged it and installed it...

howdy one and all, im about to start a rebuild of a z50r and im trying to decide which route to take with the engine. I like the idea of keeping as much honda stuff on the bike as possible but for a bit more i could get a whole 140cc lifan engine. Has any one gone down either path before, are...

Hey guys, Im picking up a 70cc Grudge soon, it supposedly has carby issues, so I figured I would get a new carby, as I would like a bit more go, so my question is, what size carby would be best for it, I have found Mikuni carbies ranging from 19mm to 30mm. I found a 26mm Mikuni one on ebay for...

Hey guys, Im picking up a 70cc Grudge soon, it supposedly has carby issues, so I figured I would get a new carby, as I would like a bit more go, so my question is, what size carby would be best for it, I have found Mikuni carbies ranging from 19mm to 30mm. I found a 26mm Mikuni one on ebay for...

My son has an Atomik 70cc lifan he would like to know how to get it going harder and faster We have looked for an inner rotor kit with no success what can we do without spending a fortune cheers Peter

I have a well used 70cc Atomik motox and was wondering how to fix the carb. The problem is after i've been riding with the throttle on full for a while, then slow down, when i go to take off or use the throttle at all it just dies and stalls like the kill switch has been ingaged. After i start...

aye guys, my 70cc atomik still wont start. has brand new head and valves ect.. brand new carby, new lead. timing is set right from advice on previous posts and so are valve clearances. has fuel and spark but is a bit low on compression. when i kick it over it sounds like it is gonna start and...