The new M Motorsport Frame

In racing, the M RR has to perform under the most extreme loads. Top speeds of more than 300 km/h, hard braking, high cornering speeds and extreme lean angles place constant demands on the chassis. The frame absorbs braking and drive forces and has a major influence on handling. Stability, precise control and clear feedback are crucial. On the racetrack, riders need complete confidence in their bike when every tenth of a second counts.

That confidence begins in development, with a precisely tuned balance of rigidity and flexibility. The M Motorsport Frame is developed, engineered and tested in Munich before being produced at the BMW Group plants in Landshut and Berlin. BMW Motorrad combines the demands of racing with an uncompromising commitment to quality. The M RR does not simply look like it has racing DNA. It is built into a component that plays a decisive role in its handling.

The BMW Group plants in Landshut and Berlin combine their expertise for the M Motorsport Frame, from precision aluminium sand casting to the fully machined frame. The four aluminium components are produced in Landshut. Digital simulations prepare the sand cores that later form the cavities in the cast part. Aluminium blocks are melted at around 750 degrees Celsius before the oxide slag is carefully removed by hand. Low-pressure casting feeds the melt smoothly into the sand mould. After cooling for eight to twelve hours, the casting package is manually decored. High-tech and craftsmanship create delicate, thin-walled structures.

Quality also comes from within: X-ray inspections check every cast component for hidden cavities and other imperfections. Only after passing inspection does the component undergo robotic trimming, deburring and sandblasting, followed by wall-thickness and dimensional checks. TIG welds then join the four components to form the M Motorsport Frame. A subsequent cathodic dip coating protects against corrosion. Final milling and coordinate measurement complete the process.