Question about "S" High Pipes

DogT said:

Yes, as mentioned if you have a 71 or newer front mudguard, it will foul in the S exhaust pipes under hard braking. That could mean some exciting times if you can't steer.

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Previous response was will foul 850 (stainless) front fender. The'71-'72 fender for the 750 (chrome) is a bit different than pre '71. So you say these also will foul the right header? The reason I ask is I have a set of original "S" pipes and considered trying them on my '72 750. Maybe not.

Thx

illf8ed said:

The'71-'72 fender for the 750 (chrome) is a bit different than pre '71. So you say these also will foul the right header?

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All from January '71 could potentially foul the 'S' pipes as that's when the factory apparently began fitting the 4.10 TT100 at the front which required an increased radius mudguard/fender.

https://www.accessnorton.com/NortonCommando/fenders-and-stays.11025/#post-152489

I could see how that could happen - something few riders consider during set-up is suspension during full compression/rebound.

Nelson can tell you about his experience with the front mudguard, a newer than 70 bike and the S type exhaust. He was the first to tell me about it.