Bosch Motorsport M5 ABS Integration Kit for the second generation Toyota GR86 / Subaru BRZ, in development
A Bosch Motorsport M5 ABS integration kit for the second generation Toyota GR86 (ZN8) and Subaru BRZ (ZD8) is in 909's development program. It follows our first generation 86 / BRZ kit, and the two programs share more than we expected.
The new car has the old problem
The second generation coupe ships with more power and more grip than the car it replaced, and the same fundamental compromise in its braking electronics: a single road ABS calibration that has to stay safe on the worst surface the car might ever meet. Driven properly on a circuit, on semis or slicks, that conservative logic can decide the tyre is at its limit a long way short of the grip actually available. Drivers call the result ice mode: a long pedal the system will not build pressure behind, in the middle of the braking zone. The mechanism is covered in detail on our first generation kit page and in motorsport ABS vs factory ABS.
The Bosch Motorsport M5 replaces that single road calibration with eleven driver selectable calibrations on a 12 position map switch, chosen for the tyre and conditions actually in use, before the braking zone rather than discovered during it.
Where the development sits
Our development car is a first generation car, and the second generation is a different platform for kit purposes. Here is what our comparison work has already established, from factory parts data and a second generation car we are working with in Europe:
- The factory ABS unit sits in the same location as on the first generation car.
- Wheel speed sensing follows the same arrangement, a tone wheel at each hub with a bolt on sensor reading it. The sensors carry new part numbers, and we are verifying the electrical details now.
- Second generation hardware is being sourced for verification against our first generation mounting solution.
The gap between the two generations looks smaller than we expected. Register your interest and we will keep you informed as verification progresses, and tell us about your build; development cars occasionally get early access.
Left hand drive
Development is on a right hand drive car. We are already working with a European owner of a left hand drive GR86 on fitment verification for a possible LHD variant. If that is your car, register your interest and say so; it genuinely informs where the work goes.
What a 909 integration kit means
Across our released platforms, a 909 kit is the vehicle specific engineering around the Bosch Motorsport M5: wheel speed sensing designed for the hubs and axles the car actually runs, hydraulic unit mounting in a location we have tested, cabin hardware bracketed rather than improvised, and calibration support behind it. That is the standard this kit is being developed to.
On every 909 kit, brake lines from the master cylinder to the hydraulic unit are made to suit the vehicle at install: 909 specifications call for Goodridge or Speedflow hardware.
Technical Specifications: Bosch Motorsport M5 ABS
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Control Strategy: High speed multi channel wheel slip control
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Maps: Eleven selectable calibrations on a 12 position map switch
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Inputs: 4x wheel speed sensors
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Outputs: Hydraulic modulation via Bosch Motorsport valve block
FAQs
Q: When can I buy one?
A: The kit is in development and pricing has not been released. Register your interest and we will come back to you with fitment details and timing as soon as they are confirmed.
Q: Which cars does this page cover?
A: The second generation coupes: Toyota GR86 (ZN8, 2021 on) and Subaru BRZ (ZD8, 2021 on). For the first generation 86, GT86, FR-S and BRZ, see the first generation kit page.
Q: Will this kit suit a LHD car?
A: Development is on a RHD car, and we are already working with a European LHD owner on fitment verification. Register your interest and tell us, or reach us via the contact page.
Q: Will installation need brake lines made?
A: Yes. On every 909 kit the lines from the master cylinder to the hydraulic unit are made to suit at install. Professional installation is recommended, and we can install and commission in our Newcastle workshop.
Q: Can you ship overseas?
A: Yes. 909 vehicle specific kits ship worldwide. Contact us for freight to your country.
Q: Is the system validated for road use?
A: No, Bosch Motorsport ABS is for track usage only.
Q: I'm building a car now. Can it be a development car?
A: Possibly. Get in touch and tell us about the build and how the car gets used. Development cars occasionally get early access.
