I've got an '03 883R, and the only thing ignition wise that I've replaced were the plugs, the coil and the wires which I put on last year at ~65k. It's got about 77k on it now, and I noticed that I've been getting a stumble when riding. It only happens once, which is strange, but this time it was when I was making a turn. So I am kind of worried about it. However, it has done it just cruising down the road, almost like it gets no spark for 1 second. Then it will not do it again, until I go through a whole warm up cycle. Which is quite frustrating to try to figure it out. From my technical expertise and resources, it sounds like my ignition system is going. Anyone agree/disagree and/or elaborate? A friend told me it might also be the Bank Angle Sensor... but I thought I'd lose it all the way and need to restart the bike as a safety precaution? I've looked all over for chaffed wires, loose connections, corrosion, etc. All seems well. Other than that, the bikes runs fine, just like the day I bought it.