In early 2025, BMW's WorldSBK team had a problem. The frame that had carried Toprak Razgatlioglu to the 2024 title had been built under rules letting underdog manufacturers tinker with chassis design. Rivals complained. The regulator agreed, and ruled it too different from the production bike to race the following year.
So BMW did something clever. If the race bike had to resemble the road bike, the road bike could resemble the race bike.
That, broadly, is the story behind the third-generation M Motorsport frame. BMW Motorrad will fit it as standard to the BMW M 1000 RR from model year 2027. It's an unusual kind of upgrade. The frame is lighter and more precisely engineered, yes, but the real headline is a philosophy you can almost see in the metal. This is a frame built to bend.
Why the new frame is designed to flex
Modern superbike frames have to resolve a contradiction. They need to be rigid longitudinally, so braking and throttle inputs reach the wheels without the chassis squirming. At full lean, though, the suspension can't do its job properly, because the forks aren't pointing straight at the ground. Something else has to help absorb the bumps.
That something, now, is the frame itself.
BMW has reduced the wall thicknesses on the cast aluminium components by up to 30 per cent. That saves weight and lets engineers tune stiffness more precisely. Longitudinally, the frame stays stiff. Laterally, when the bike is leaned over, it flexes to a defined degree, working alongside the suspension rather than against it.
For the rider, the payoff is more consistent tyre contact mid-corner, cleaner feedback through the bars and more even tyre wear. Most of that matters more at racetrack pace than it does on a Sunday ride, which is fair. The M 1000 RR has never really been about Sunday rides.
Three frames, one evolution
The M 1000 RR arrived in 2020 as the first motorcycle to carry an M badge from BMW. Its chassis was a cast aluminium bridge frame derived from the S 1000 RR. The engine acted as a load-bearing member, with geometry revised for racing use.
That first-generation frame did the job for four model years. The 2023 refresh added fresh aerodynamics and carbon-fibre bodywork, but left the frame itself alone.
The second generation arrived for model year 2025. It came with a tweaked engine mount and extra flex engineered into the steering-head area. The aim was better feedback under hard braking and turn-in. BMW's existing Flex Frame branding carried over from the 2019 S 1000 RR, and the update was unveiled weeks after Razgatlioglu's 2024 title win.
Now the third generation. It's around 1.3kg lighter than the previous version, with wall thicknesses cut by up to 30 per cent. The flex characteristic has been designed in from the ground up, rather than retrofitted. The aim is a frame that behaves predictably at the limit. It scales from a club racer at Cadwell Park up to a factory team in Jerez.
Spec comparison
Generation | Model years | Design | Headline change |
First | 2021 to 2024 | Flex Frame carried over from the 2019 S 1000 RR | Load-bearing engine, geometry revised for racing use |
Second | 2025 to 2026 | Updated Flex Frame, same bridge concept | New engine mount; extra flex engineered at the steering head |
Third (M Motorsport frame) | 2027 onwards | Thin-walled aluminium casting, low-pressure cast in four sections | Around 1.3kg lighter, walls up to 30 per cent thinner, defined lateral flex at lean |
What this means for racing
Here's the clever bit. By building a flex-tuned frame into the production bike as standard, BMW gets the homologation argument out of the way for good. Whatever the next round of chassis rules looks like, the production bike and the race bike will share a design philosophy. That philosophy is openly documented and digitally validated.
That matters for customer racing too. The M 1000 RR has always been a popular platform for national superbike championships. A lighter frame, with a known flex pattern, is a much better starting point for a race-shop build than one that needs modifying first.
For factory racing, the implications stretch further. Toprak Razgatlioglu moved on from BMW at the end of 2025 to chase a MotoGP seat with Pramac Yamaha, after a second consecutive WorldSBK title. His replacements, Danilo Petrucci and Miguel Oliveira, will race the model-year 2026 bike this coming season. But the groundwork for 2027 is already in the metal, and in the castings coming out of the Landshut plant.
One frame, three cities
Where the frame is built is almost as interesting as how it bends. BMW develops the chassis in Munich. The geometry, wall thicknesses and stiffness distribution are designed digitally, then validated in simulations, on test rigs and in riding tests. The low-pressure casting itself happens at the BMW Group plant in Landshut, which specialises in thin-walled aluminium components.
The four cast sections – steering head, left side, right side and rear – are shipped to Berlin. There, they're TIG welded, dip coated for corrosion protection, machined to final tolerances and measured again before sign-off.
When you can get one
The new M Motorsport frame will be fitted as standard on the 2027 BMW M 1000 RR, with no option box to tick. UK pricing and on-sale dates are still to come from BMW Motorrad.
If the new BMW M 1000 RR is on your list, book an appointment at a Vertu Motorcycles dealership. We're the UK's largest BMW Motorrad retail network. Our sales and service teams know the M 1000 RR inside out, and can talk you through anything from spec to finance.
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