This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This BMW R75/5 was modified in cafe racer style by the service manager of the seller’s BMW dealership, and has covered less than 2,500 miles since the build was completed. Finished in metallic silver with red pinstriping, the bike has been fitted with a long-wheelbase /6 frame and swingarm, a Grimeca front brake, and Excel 18” aluminum rims. Custom aluminum fenders, Tomaselli handlebars, and a Corbin solo saddle replace the factory items. Power is provided by a rebuilt 749cc opposed-twin, which is paired with four-speed gearbox and equipped with a streamlined top cover, velocity stacks, and Hoske silencers. Modern electrical and ignition components from Enduralast and Spiegler are paired with the factory hand controls and custom lighting. This modified R75/5 is being offered by the selling dealer with a New York title, describing the bike as a 1975 model year.
Fuel is held in a /5 “toaster tank” finished in silver metallic with red double-row pinstriping and a pair of roundels. The aluminum fenders feature center ribs and were hand formed by 7 Metal West of Milwaukee, Wisconsin. A custom headlight with a chrome bucket and surround is mounted between polished aluminum ears, and bullet-shaped clear turn indicators are fitted front and rear. New bearings and bushings were installed for the steer tube, hubs, and swingarm during the build. Much of the hardware, including the axles and engine-mounting studs, has been replaced with stainless components.
A new set of wheels was built for the bike, using Excel 18” aluminum rims, stainless spokes, and a Grimeca front brake. Custom torque stays were machined to adapt the more-powerful 4LS front drum to the /5 forks, which are also fitted with Progressive Suspension springs, a San Jose BMW billet aluminum triple tree, and a custom lower brace. New Hagon shrouded shocks are utilized with the long-wheelbase /6 rear swingarm.
A GPS speedometer from Legacy is centered above the headlight, and Rizoma mirrors are mounted on each side of the Tomaselli adjustable handlebars. Rear sets replace the factory foot pegs. The factory relays and fuse panel have been replaced with a digital Spiegler M unit control panel, and the bike was rewired with a custom cloth-covered harness. Less than 2,500 miles have been added since the build was completed, as shown by the digital odometer.
The rebuilt 749cc opposed-twin and smooth-case four-speed gearbox wear a German-made streamlined cast aluminum top cover. Induction is through a pair of Bing carburetors equipped with mesh screens and velocity stacks. Note the custom choke levers. A replacement header is paired with dual Hoske chrome silencers. The starter, charging system, and ignition have all reportedly been upgraded with components from Enduralast.