The build and parts list
| Item | Specification |
|---|---|
| Vehicle | Toyota GR Supra (A90 / A91) |
| Front setup | Brembo 6-piston caliper with 390mm STOPFLEX carbon ceramic rotor |
| Rear setup | Dual-caliper layout: 4-piston performance braking caliper plus a separate electronic parking brake caliper, 380mm iron rotor |
| Pads | STOPFLEX performance ceramic compound |
| Front-axle weight saved | Roughly 15 kg (about 33 lb) for this build |
| Axle scope | Front carbon ceramic upgrade; high-performance iron rear |
Confirm before you order
This is a custom big-brake application, not a bolt-on rotor swap. The 390mm front rotor and 6-piston caliper generally want a 20-inch wheel for barrel clearance, and spoke design matters. If your Supra is still on 19s, get wheel clearance checked first.
Why a front CCB layout makes sense
| STOPFLEX feature | Why it matters on the A90 Supra | What you notice |
|---|---|---|
| 390mm carbon ceramic front rotor | The front axle eats most of the braking heat, and that's exactly where iron rotors start to fade on a fast, repeated-stop run. | The pedal stays consistent down a long grade instead of going soft after a few hard stops. |
| Long-fiber CCB construction | Holds friction stability under heat that would have iron rotors smoking; tested surface friction stays around 0.3μ near 900°C. | Predictable bite when you're pushing, not a moving target. |
| About half the weight of a same-size steel rotor | Cuts rotating unsprung mass right at the nose, where the A90 already carries weight. | Sharper turn-in and a lighter-feeling front end through quick transitions. |
| STOPFLEX ceramic pad pairing | Keeps normal-temperature friction above 0.4μ while cutting dust on a car with visible performance wheels. | Strong cold bite for the street, and wheels that stay clean. |
| Corrosion-resistant rotor that won't rust after rain | A street-driven Supra sees weather, and iron rotors surface-rust fast when parked wet. | Clean rotor face behind the spokes, plus street life that can reach 250,000–300,000 km off-track. |
What gets better
- Front fade resistance under repeated hard braking on canyon roads or track days.
- Steering response and turn-in from roughly 15 kg less rotating mass up front.
- Cleaner wheels and lower dust with the matched STOPFLEX pad compound.
- Normal cold braking, even on a freezing first stop, with no rust after rain.
- Long rotor service life on a street-driven car, so the rotor reads as a long-term part, not a wear item.
What to confirm first
- Wheel barrel and spoke clearance for the 390mm front rotor and 6-piston caliper, especially on 19-inch wheels.
- Caliper mounting, rotor size, and any adapter hardware for this custom front package.
- That your goal is front-biased braking gains, which is what this front-CCB, iron-rear mix is built for.
- Rear electronic parking brake function is retained through the separate EPB caliper.
If you're not sure your car matches the spec shown here, send us your details and we'll confirm Toyota GR Supra A90 fitment before you order through our Toyota CCB collection.
Build gallery
Supra A90 brake upgrade FAQ
Why run carbon ceramic front rotors but keep iron rotors at the rear on an A90 Supra?
The front axle takes most of the braking load and most of the heat, so that's where the carbon ceramic upgrade pays off first: better fade resistance, lower unsprung mass, and steadier pedal feel. The rear keeps a high-performance 4-piston iron setup, which is plenty for the load that axle sees and keeps the overall package sensible.
Can I still daily drive the Supra with this brake setup?
Yes. STOPFLEX carbon ceramic rotors brake normally from cold, even in the kind of cold you'd see at -20°C on the first stop, and they don't rust after rain. Paired with STOPFLEX pads, dust drops noticeably, so a road-driven Supra keeps clean wheels and normal manners.
How does dropping front rotor weight change how the Supra drives?
Carbon ceramic rotors weigh about half what same-size steel rotors do, so you cut rotating unsprung mass right at the nose. On the A90 that tends to sharpen turn-in and make the front end feel less heavy through quick direction changes, before you even touch the brakes.
Will a 390mm front carbon ceramic kit clear factory 19-inch Supra wheels?
Not always. A 390mm front rotor and 6-piston caliper usually need a 20-inch wheel for proper barrel clearance, and spoke design matters too. Confirm wheel clearance before you order or install.
Does this brake setup keep the factory electronic parking brake?
Yes. The rear runs a dual-caliper layout: a 4-piston performance braking caliper plus a separate electronic parking brake caliper, so Auto Hold, hill assist, and EPB at standstill all keep working.
