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/5 Muffler question

wbmoore
Posts: 71
Joined: Sun Nov 16, 2008 7:26 pm
Location: Big Bar, Ca.

/5 Muffler question

Post by wbmoore »

Does anybody KNOW if Cigar style mufflers from a 1973 /5 will fit on a 1976 R90/6 ??? Has anybody actually done that swap ? Is it a straight bolt-them-on swap ??? Thanks.
232E9B59-BCFF-49EF-863E-6D3148528A0C.jpeg
Brad Moore
1960 R69; 1975 Norton MKIII; 1976 R90/6; 1992 K75S; 2000 Hayabusa
Big Bar, Northern California

Tinkertimejeff
Posts: 57
Joined: Thu Jan 20, 2022 5:49 pm

Re: /5 Muffler question

Post by Tinkertimejeff »

They should fit but if the /5 is a short wheelbase bike they may come up a little short in relation to the back wheel.

Werner1111
Posts: 86
Joined: Fri Dec 16, 2016 6:39 pm

Re: /5 Muffler question

Post by Werner1111 »

You know, I've never seen anyone do that. I've seen /6 & /7 mufflers on a /5, presumably because /5 mufflers were harder to find. I like your idea. I would think it should bolt straight up. The pipe diameter is the same, so it's just a matter of lining up the frame mounting points. As mentioned, just pay attention to whether there are any options related to long vs. short wheel base from the /5.
R69 R90/6 R100/7 R100S R1150GSA S2R1000

wbmoore
Posts: 71
Joined: Sun Nov 16, 2008 7:26 pm
Location: Big Bar, Ca.

Re: /5 Muffler question

Post by wbmoore »

….well, I guess we’ll find out.
Brad Moore
1960 R69; 1975 Norton MKIII; 1976 R90/6; 1992 K75S; 2000 Hayabusa
Big Bar, Northern California

wbmoore
Posts: 71
Joined: Sun Nov 16, 2008 7:26 pm
Location: Big Bar, Ca.

Re: /5 Muffler question

Post by wbmoore »

Do /5 cigar-style mufflers bolt right on to a 1976 R90/6 ?

Yes they do.
Brad Moore
1960 R69; 1975 Norton MKIII; 1976 R90/6; 1992 K75S; 2000 Hayabusa
Big Bar, Northern California

Werner1111
Posts: 86
Joined: Fri Dec 16, 2016 6:39 pm

Re: /5 Muffler question

Post by Werner1111 »

I think a picture is needed as proof!
R69 R90/6 R100/7 R100S R1150GSA S2R1000

wbmoore
Posts: 71
Joined: Sun Nov 16, 2008 7:26 pm
Location: Big Bar, Ca.

Re: /5 Muffler question

Post by wbmoore »

Will do. Mid week.
Brad Moore
1960 R69; 1975 Norton MKIII; 1976 R90/6; 1992 K75S; 2000 Hayabusa
Big Bar, Northern California

Werner1111
Posts: 86
Joined: Fri Dec 16, 2016 6:39 pm

Re: /5 Muffler question

Post by Werner1111 »

Great, thanks. I also have a 1960 R69 and and 1976 R90/6!
R69 R90/6 R100/7 R100S R1150GSA S2R1000

wbmoore
Posts: 71
Joined: Sun Nov 16, 2008 7:26 pm
Location: Big Bar, Ca.

Re: /5 Muffler question

Post by wbmoore »

Werner, here ya go. They are not OEM BMW but they fit in all the right holes and don’t bump into anything they’re not supposed to. They’re for a ‘69-‘72 /5. I’m hoping their sound is quiet and as original.
7523D1A3-1D13-4B92-8F77-216A2E56707E.jpeg
Brad Moore
1960 R69; 1975 Norton MKIII; 1976 R90/6; 1992 K75S; 2000 Hayabusa
Big Bar, Northern California

Werner1111
Posts: 86
Joined: Fri Dec 16, 2016 6:39 pm

Re: /5 Muffler question

Post by Werner1111 »

Very nice! It's going to look awesome when it's all together! Good call on going backwards with the exhaust, and very original idea. I'm surprised I've never seen that before. I really like it.
R69 R90/6 R100/7 R100S R1150GSA S2R1000

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