Just out of interest... Are there any alternative CDi's for the KMX? I did some googling but couldn't find anything useful... I was looking at AR125 CDI's and alternators, they look the same.. Guessing the CDI's timing curve is different, have to admit I was tempted for a while, given that KMX CDI's are expensive and AR125 CDI's seem to be very cheap... Just to put all this into perspective, this is for an old 'field bike' which I've been putting together more for my own amusement than anything else. It's essentially an '87 KX125 with a KMX 125 engine fitted, it still has the KX carb and reeds. I havent heard this thing run yet (No spark) - it's a combination of spares that I had kicking around, I have a feeling the KX carb is going to be way too big for the KMX either way.... anyone ever tried to put a KX carb on a KMX? Just wondering if I need to be trying to track down a KMX carb.!