Not sure how relevant this is on this thread. However, I have just fitted an sc-project explorer 2018 euro 4 exhaust on my r1250r and it seems to fit fine and ride fine no isues with engine management lights or change in pOwer as felt on the bum. Only thing is the carbon heatshield does not fit due to the OE heat shield being diff on the r1200r . I have ordered a servo cover and once fitted will fit carbon shield. At some stage in the near future after lock down I'll get it dynoed to check fuelling.