The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: Dwmadsen on May 05, 2024, 10:09:22 AM

Title: Rear subframe compatibility
Post by: Dwmadsen on May 05, 2024, 10:09:22 AM

Will the upper tail section for the 1986 R65 bolt to a 1981 R65 rear subframe?

Title: Re: Rear subframe compatibility
Post by: dogshome on May 05, 2024, 11:23:00 AM

No, unless you want to buy a lot of other parts as well.

Up until 1985, the bikes were short wheelbase. Shorter swingarm, smaller battery, different seat, toolbox and fender/mudguard. After that, they went to the same size as the R80/100 etc. It's about 2" longer from memory. The fittings between the frame and subframe also altered. There is a load of info about this on the web once you know about short and long wheelbases.

Title: Re: Rear subframe compatibility
Post by: Dwmadsen on May 05, 2024, 07:18:52 PM

Thanks! My issue is the real rear cowling leaves a large vertical gap between the bottom of the cowling the the fender :  https://share.icloud.com/photos/0dffukkx6bEZWsuRB_83G-1dg (https://share.icloud.com/photos/0dffukkx6bEZWsuRB_83G-1dg).

I am looking to “fill the gap”. The parts list seems to list only the rear cowling I presently have. Images of other R65s show a rear cowling which hangs lower.

Title: Re: Rear subframe compatibility
Post by: donbmw on May 05, 2024, 08:02:58 PM

You need the storage partition item 15.

https://shop.maxbmw.com/fiche/DiagramsMid/B0001794.png?v=09082020

Title: Re: Rear subframe compatibility
Post by: georgesgiralt on May 06, 2024, 05:22:31 AM

And the rear subframe is for two shock absorbers on the 1979~84 models and mono shock absorber for the 1985~95 models...

Title: Re: Rear subframe compatibility
Post by: Dwmadsen on May 06, 2024, 03:19:15 PM

Don,
Perfect….this explains my dilemma.

Title: Re: Rear subframe compatibility
Post by: dogshome on May 07, 2024, 05:13:23 PM

Hes right   :)

The toolbox mounts on the two bolts you can see that have black plastic caps on them currently.

Title: Re: Rear subframe compatibility
Post by: georgesgiralt on May 08, 2024, 01:30:28 AM

Do not forget to install the metal strip ABOVE the toolbox in order to spread the load on the plastic ....