You would expect exhausts would be bigger and uglier to make the bikes quieter.
However, the German engineers may have found a way to quieten them with tidier and tinier mufflers.
That would be welcome as most new models seem to have bigger and bigger mufflers each year.
Although most new owners seem to replace the stock exhaust or at least remove the catalytic convertor, anyway!
At the same time, the BMW engineers may not have sacrificed power. After all, the new Boxer models have capacity increases from 1170cc to 1254cc with power to hit the magic figure of 100kW, up from 91kW.
The 2019 BMW S 1000 RR filing back in February with Chinese officials do not provide any technical details. However, we predict there will also be a power boost, if not a capacity increase.