Originally Posted by rcmatt
for those of us on the other side of the pond.... what is the difference between EU3 and EU4?
...

1. Motorbike emissions regulations...
2. (M3W) Series of changes includng EU4 compliance requiring a moustache on the front of an engine and emasculating ECU, but also including raised ride height and widened rear indicator stalks.

M3W5sp 2015, MSCC, MTWC, Oxon UK