The mufflers have some chrome loss where the attach to the header pipe but the muffler shields I installed hides that problem...the left side muffler has a ding but it is down low and not very visible....I took the bike for a 30 mile run and the mufflers are very quiet. As I age I now appreciate quieter exhaust systems. I should get a lot of years out of these....they have a couple of surface rust spots underneath at the seams but it doesn't appear to be very deep.
I hadn't run the bike without the sidecar for quite a while and was surprised at the amount of power with the 900cc engine running solo. With the 37:11 final drive it winds up quickly off the line and actually hauls ass. I found that the engine oil temperature was running the same with or without the side car attached.
Uncovered the R100S / R90/6 to wipe it down as it has been covered up for 3 weeks and has weathered a few rainstorms.....below is a photo of the 1973 R75/5 Long Wheel Base sub frame after installation.
I temporarily mounted the Bates Bags...they will go on some different mounts and eventually go to the R75/5...the stock BMW suitcase style bags & mounts will go to the R100S.