1972 BMW R75/5 Cafe Racer Build by Cognito Moto
1972 BMW R75/5 Cafe Racer Build by Cognito Moto
This 1972 BMW R75/5 came through our shop here at Cognito Moto in Oilville, Virginia, for a full cafe-racer-style build. The goal was to keep the classic BMW Airhead character intact while updating the suspension, brakes, wheels, electronics, and overall stance with modern components.
The finished bike is painted in Porsche Aventurine Green with black pinstriping over a black frame and custom rear subframe. The result is a clean, low, purposeful R75/5 that still feels like a vintage BMW, but with the handling, braking, and details expected from a modern custom build.
The fuel tank, custom front fender, and Cognito Moto headlight shell were finished in Aventurine Green with black pinstriping. The frame was refinished in black, and a custom rear subframe was built to tighten up the rear of the bike and support the cafe-style seat.
Out back, the subframe uses an integrated strip-style LED taillight with a license plate downlight for a clean rear profile. The seat was built by New Church Moto and features black leather with diamond-quilt stitching. We also added black rubber knee grips, a Morimoto LED headlight projector, Cognito Moto rear-set foot controls, and a center stand.
One of the biggest changes to this R75/5 is the complete wheel, suspension, and brake setup.
The bike runs black Excel Takasago 17-inch alloy rims laced to Cognito Moto conversion hubs. Tire sizes are 120/70 up front and 150/60 in the rear, using Pirelli Diablo Rosso tires.
The front end was converted using a 2011-and-later Suzuki GSX-R600 setup with Showa Big Piston inverted forks. We paired that with custom Cognito Moto triple clamps to properly adapt the modern fork assembly to the BMW chassis. Braking up front is handled by dual discs with Brembo calipers.
At the rear, the stock drum brake was replaced with a Cognito Moto rear disc brake conversion and Brembo caliper. Custom-configured Öhlins piggyback shocks are mounted to the swingarm on the left side and the final-drive enclosure on the right.
The cockpit was kept simple and functional. Black clip-on handlebars are mounted below the top triple clamp and fitted with a Domino twin-pull throttle, Motogadget mo.switch three-button controls, a Brembo front brake master cylinder, and a Motogadget mirror.
Instrumentation is handled by a Motogadget motoscope pro digital dash mounted in a black aluminum housing. The display features automatic brightness adjustment, a configurable layout, and gear-position detection.
The bike also uses a Motogadget m-Lock keyless ignition system and a Motogadget mo.unit blue controller. The mo.unit blue allows Bluetooth connectivity through the mo.ride smartphone app and helps simplify the bike’s wiring while keeping the electrical system clean and reliable.
The original 745cc opposed-twin was upgraded with a 1,000cc Siebenrock Power Kit. The cylinder heads were rebuilt with Kibblewhite valves, springs, and retainers.
Fueling is handled by a pair of 38mm Dell’Orto PHM carburetors with custom screened velocity stacks. Additional engine upgrades include a Euro MotoElectrics electric starter and a Siebenrock oil pan extender.
The exhaust system uses chrome headpipes with a crossover pipe and stainless-steel Cone Engineering reverse-cone megaphone mufflers.
Power is sent through a rebuilt five-speed gearbox with a replacement flywheel and clutch. The BMW shaft drive remains in place, with the driveshaft enclosed in the right side of the swingarm.
This R75/5 is a good example of what we like about building vintage BMWs. The original bike has a strong mechanical identity, but there is a lot of room to improve the stance, braking, suspension, and overall fit and finish.
By combining BMW Airhead character with modern GSX-R suspension, Brembo brakes, Excel rims, Öhlins shocks, Motogadget electronics, and Cognito Moto conversion parts, this build became a clean and capable cafe racer while still keeping the soul of the original R75/5.