Well, I'm in for a surprise tomorrow at the races. It's been a few months since I've driven my B4.1 The stock electronics have all disappeared, one way or another. SC 4x4 is a dying breed at a particular track, so I swapped electronics into my roller B4.1. 4x4 with tons of GO into a lighter 2wd...

CC MMP/Tekin Pro4 4000Kv geared at 58/13. I've got a new set of Barcodes mounted, all ready to go.