Hi guys I currenty own a yamaha aerox, piaggio zip and a ktm 250 2 stroke and I live in greenhithe I have always been into motocross from the age of four and am new to the road bike scene.

Also I am having trouble with my aerox I have just changed the piston and now the bike will only start with full throttle and choke on but will only just about rev up to 2000 rpm and as soon as you let go of the throttle the engine dies straight away, any ideas, thanks.

Hi and welcome to the group. Sounds like you may need to slap in some bigger main jets in the carbs.

Thanks alot, also now the bike won't start at all and every now and then it backfires ?

to the YOC. This section's just for intros so there's no telling how good a response to your tech questions you'll get here.

Hey and welcome to the forum.