The Build: Vehicle and Parts List
| Component | Specification |
|---|---|
| Vehicle | Porsche Panamera (976) |
| Front calipers | Akebono 10-piston fixed calipers |
| Front rotors | STOPFLEX carbon ceramic, 440 x 40 mm |
| Rear calipers | Factory 4-piston fixed calipers (retained) |
| Rear rotors | STOPFLEX carbon ceramic, 380 x 28 mm |
| Axle scope | Front big brake upgrade plus rear rotor upgrade |
| Quoted weight saving | About 35 kg total |
| Wheel context | Built around factory 21-inch wheels, spoke clearance to be confirmed |
Confirm before you order
This is a custom big brake application, not a drop-in rotor swap. A 440 mm front rotor and 10-piston caliper need real clearance behind your wheel, so barrel diameter, spoke shape, and caliper profile all have to be checked against your exact 21-inch wheel before installation.
What the Upgrade Changes and What to Confirm
| STOPFLEX feature | Why it matters on the Panamera 976 | What you notice |
|---|---|---|
| 10-piston front caliper on a 440 mm rotor | A heavy, fast luxury sedan dumps most of its braking load into the front axle. More pistons spread pad pressure evenly across a big friction surface. | Firmer, more consistent pedal when you brake hard down a grade or repeat stops from speed. |
| Carbon ceramic rotors at half the weight of steel | You can run a 440 mm front rotor without piling on unsprung mass the way a steel rotor that size would. | Sharper turn-in, better ride recovery over bumps, and a big car that feels less reluctant to change direction. |
| Heat-stable friction surface | At 900°C, tested STOPFLEX rotor surface friction still holds around 0.3μ, well past the point where iron starts to saturate. | Pedal feel that doesn't go long and soft after a string of hard stops. |
| Very low dust with STOPFLEX pads | Big open Porsche 21-inch wheels show every bit of brake grime. | Wheels that stay clean far longer between washes. |
| Corrosion-free rotor body | A Panamera that sits between drives builds a rust ring on iron rotors. | No rust after rain, and a clean rotor face through the spokes. |
| Long street life | Carbon ceramic isn't a consumable you replace on a short cycle in road use. | Street life of roughly 250,000 to 300,000 km when the car stays off track. |
What gets better
- More front clamping authority and thermal headroom where the car works hardest.
- Roughly 35 kg less mass overall, much of it unsprung, for sharper response.
- Cleaner wheels thanks to very low dust with STOPFLEX pads.
- No rust ring after wet weather or long parking.
- Consistent cold bite, normal even around -20°C on the first stop.
What to confirm first
- Caliper-to-spoke clearance on your exact 21-inch wheel, not just barrel diameter.
- That your car matches the front 10-piston, rear factory-caliper layout shown here.
- Pad pairing: run STOPFLEX pads to get the low-dust and friction numbers quoted.
- Your real use case, since the street life figures assume no track work.
If you're not sure your car matches the spec shown here, send us your details and we'll confirm Porsche Panamera (976) fitment before you order through our Porsche CCB collection.
Build Gallery
FAQ
How do the Akebono 10-piston front calipers compare to a stock 6-piston Porsche setup?
Akebono is a Tier-1 brake supplier with a strong performance pedigree. On this build the 10-piston front caliper was chosen for its rigidity and how evenly it spreads pad pressure across a very large rotor. Against a typical 6-piston front, the aim is more consistent clamping and cleaner modulation when you load the brakes hard and repeatedly.
Why upgrade the front calipers but keep the factory rears?
The front axle does most of the braking work, so the biggest hardware change goes where it earns the most. The front gets 10-piston calipers and 440 x 40 mm carbon ceramic rotors, while the rear keeps the factory 4-piston calipers running STOPFLEX 380 x 28 mm carbon ceramic rotors. You get the front thermal and clamping gains without paying for a full rear caliper conversion.
Will the 440mm front carbon ceramic rotors clear factory 21-inch wheels?
This build was developed around factory 21-inch Porsche wheels, but barrel diameter is only part of the story. Spoke shape and caliper profile matter too, so confirm final clearance for your exact wheel before you order or install.
What do STOPFLEX carbon ceramic rotors actually give you on a street Panamera?
Lower unsprung weight, stronger resistance to heat fade, very low brake dust when paired with STOPFLEX pads, and no rust after rain. For street use that stays off track, STOPFLEX puts rotor life at roughly 250,000 to 300,000 km.
