Yes, friend rode the new bike and found it far superior to the older model. I still like the engine braking, but I can see what a better system the new one has.I had a gear damage with 80,000 km on a holiday trip in the Swiss Alps. A repair has not been worthwhile any more, because the Burgi was 8 1/2 years old. And the new model is considerably better than the K4. Now I have gone in 3 weeks more than 2,000 km and take pleasure every day in the Burgi.