The 1983 R80ST has a single front disk brake. The brake disk is mounted on the right side of the front wheel. This bike did not have the front disk, so I got a new one. I rebuilt the front brake caliper and you can see how I do that here.
Here is the description of how install the front brake and a summary YouTube video of how I do this work.
VIDEO: 1983 BMW R80ST Install Front Brake
The 1983 R80ST has a single front disk brake on the right side of the front wheel. It uses a Brembo caliper connected to a master cylinder and fluid reservoir built into the right handlebar control unit. I repainted the caliper using black caliper paint.
Here is what the caliper looked like when I got the bike removed it from the bike.
As Found: Front Brembo Disk Brake Caliper And Missing Brake Rotor
Brembo Front Brake Caliper With Crusty Looking Brake Pads
And this is how it looks after repainting and rebuilding.
Brembo Front Caliper After Rebuilding
Brembo Front Caliper After Rebuilding
Brembo Front Caliper After Rebuilding
This shows how I do the work.
Here is a short video summarizing the procedure. It is a mix of video from the 1983 R100RS and 1983 R80ST.
VIDEO: 1983 BMW R80ST Rebuild Front Brake Caliper
After I installed the electrical system, I install the handlebars, the instruments (speedometer and tachometer), the dash and the handlebar controls and multi-function switches. You can see how I did this work and a summary YouTube video below.
VIDEO: 1983 BMW R80ST Install Handlebar, Instruments & Dash
I replace the main wiring harness and all the sub-harnesses. I also replace all the electrical components. Since this bike sat for almost 25 years and the components and wiring were not in good shape, replacing it all should provide very good reliability. You can see how I remove what was left of the original electrical system here.
Here is a link to the documentation and YouTube video summary of how I do this work.
VIDEO: 1983 BMW R80ST Install Electrical System
This 1983 R80ST “project bike” had the front forks and the BMW top plate when I acquired it. I rebuilt the front forks and replaced the steering head bearings and you can read about how I do that work here.
Now it’s time to install and align the front forks. I replace the stock BMW top plate that fits over the steering stem and on top of the fork tubes with a Toaster Tan Top Brace and the Toaster Tan acorn nut that secures the top brace to the steering stem. This top plate is much stronger than the stock thin steel top plate BMW uses. This improves handling as the top plate doesn’t bend and flex like the BMW top plate does.
Toaster Tan R80ST Top Brace
You can read about how I do this work and see a summary YouTube video.
VIDEO: 1983 BMW R80ST Install-Align Front Forks & Toaster Tan Top Brace