Build & parts list
| Vehicle | Porsche Taycan 4 Cross Turismo (9J1), custom high-output build |
|---|---|
| Front setup | Akebono 10-piston caliper with 420mm STOPFLEX carbon ceramic rotor |
| Rear setup | Factory 4-piston caliper with 380mm STOPFLEX carbon ceramic rotor |
| Rotor construction | STOPFLEX long-fiber carbon ceramic |
| Pads | CCB-matched ceramic compound |
| Rotor weight | About half the weight of a same-size iron rotor |
| Scope | Front big-brake conversion; rear rotor upgrade on factory caliper |
Confirm this before you order
This is a custom front big-brake conversion, not a bolt-on rotor swap. The 420mm front package depends on the Akebono 10-piston caliper, so wheel clearance has to be checked against your exact wheel before ordering. The rear keeps the factory caliper and steps up to a 380mm STOPFLEX rotor.
Why this setup works on a Taycan
| STOPFLEX feature | Why it matters on this Taycan | What you notice |
|---|---|---|
| 420mm front rotor with Akebono 10-piston caliper | The front axle does most of the braking on a heavy, fast Cross Turismo, and a tuned one piles on speed quickly. | Firmer, more repeatable stops from high speed instead of a pedal that goes long when things heat up. |
| Long-fiber carbon ceramic rotors | Big EVs dump a lot of energy into the brakes in a single stop, so heat capacity has to be there. | At 900°C the rotor surface still holds friction near 0.3μ, so the pedal stays consistent under repeated heavy braking. |
| About half the weight of iron rotors | Less unsprung and rotating mass at each corner sharpens how the car turns and rides. | Crisper response and lighter steering feel, plus a small drop in rotating weight the suspension no longer fights. |
| CCB-matched pads, low dust | Owners want stronger brakes without filthy wheels every week. | Wheels stay noticeably cleaner between washes, which shows on a light wheel finish. |
| Rotors don't rust after rain | A daily-driven EV sees plenty of wet weather and short trips. | No orange surface rust on the rotor faces after rain or a winter wash. |
What gets better
- Stronger, more consistent front braking from high speed
- Lower unsprung and rotating mass at all four corners
- Heat tolerance that holds the pedal under repeated hard stops
- Very low brake dust with the matched STOPFLEX pads
- No rotor rust after rain, and long street life of roughly 250,000 to 300,000 km off-track
What to confirm first
- Exact Taycan variant and current caliper layout
- Wheel size and barrel clearance for the 420mm front package
- That you want a front big-brake conversion, not a rotor-only change
- Front-and-rear scope: 10-piston front, factory-caliper rear rotor
- Your intended use, since regen handles part of the daily braking
If you're not sure your car matches the spec shown here, send us your details and we'll confirm Taycan 4 Cross Turismo (9J1) fitment before you order through our Porsche CCB collection.
Build gallery
FAQ
Do you really need a 10-piston front caliper on a Taycan?
On a Cross Turismo built to this power level, the front axle absorbs most of the braking energy. The Akebono 10-piston caliper adds pad area and clamping support up front, and the 420mm carbon ceramic rotor adds the thermal headroom you need for repeated high-speed stops.
Why keep the factory rear caliper and only change the rear rotor?
It puts the big hardware change where the work happens, at the front, while the rear moves to a lighter 380mm carbon ceramic rotor for thermal balance and lower unsprung mass. You get most of the benefit without forcing a full rear caliper conversion.
Will this brake upgrade interfere with the Taycan's regenerative braking?
No. Regen still handles deceleration in its normal range. The upgraded friction brakes are there for when regen backs off, isn't available, or simply isn't enough for the stop you're asking for.
Can carbon ceramic brakes help range or efficiency?
A lighter rotor package cuts unsprung and rotating mass, which helps responsiveness. Any daily range gain is modest, but the drop in rotating weight is still meaningful for how the car feels.
How long do STOPFLEX carbon ceramic rotors last on the street?
In normal street use they can reach roughly 250,000 to 300,000 km when the car isn't tracked. On an EV, where regen handles part of the deceleration, mechanical brake wear can be especially low.
