I have the same bike- a 1971 R 75/5. One place you might try for black pipes is Clubman Racing in Connecticut- they deal in Norton and other cafe ...

Your R 90 is beautiful. Who made the seat? I would like to obtain one and fit it to my R100S which carries a Heinrich 7 gal gas tank- which is proba...

Your R 90 is beautiful. Who made the seat? I would like to obtain one and fit it to my R100S which carries a Heinrich 7 gal gas tank- which is proba...

I use the stock seat with my Heinrich tank- I cut off the first 3 inches and then had an upholstery shop stitch the seat cover closed. The seat works...

I use the stock seat with my Heinrich tank- I cut off the first 3 inches and then had an upholstery shop stitch the seat cover closed. The seat works...

Interesting to see your tank appears to fit without modifying the seat. I have a 7 gallon Heinrich tank on my 1978 R 100S but I needed to cut several...

1978 R 100S with Heinrich tank, braced swing arm, balanced flywheel, and many other special bits.

Beautiful job. two questions: 1. who makes the seat/where is it from? 2. did you have to rejet the carbs when you installed the Norton Commando p...