Porsche Cayenne Turbo 9Y Ceramic 440/410 brake system brake

The Porsche Cayenne (9Y0/9YA) Carbon Ceramic Brake (PCCB) system is the most powerful braking setup available for the E3 platform. While the standard Cayenne Turbo often comes with the white-caliper PSCB (Tungsten Carbide) system ($415\text{mm}$ front), the Turbo S E-Hybrid and the Turbo GT utilize the full $440\text{mm}$ Carbon Ceramic setup.

Technical Specifications (9Y0 / 9YA)

Key Part Numbers for Inventory

For Buy Mustang parts Ltd, it is critical to differentiate these from the smaller 415mm PSCB (Steel) rotors, which also use 10-piston calipers but are white.

• Front Ceramic Discs ($440\text{mm}$):

  • Left: 9Y0.615.301.R (or latest revision AF)

  • Right: 9Y0.615.302.R (or latest revision AF)

• Rear Ceramic Discs ($410\text{mm}$):

  • Left: 9Y0.615.601.K

  • Right: 9Y0.615.602.K

• Ceramic Pads (Front): 9Y0.698.151.AN (or BM).

Market Insight & Compatibility

1. The “Turbo GT” Standard

On the Cayenne Turbo GT, this $440/410\text{mm}$ system is standard equipment. Because the Turbo GT is often used for high-speed track or “Ring” runs, these rotors are high-turnover items in the secondary market due to the extreme replacement costs at dealerships (often exceeding $20,000$ for a full set).

2. Retrofit Considerations (Steel to Ceramic)

If a customer is upgrading a base Cayenne or a Cayenne S from steel/PSCB to these ceramics:

• Wheel Clearance: A minimum of 21-inch wheels is required, though 22-inch wheels are highly recommended to provide enough “air gap” for cooling and to prevent debris from scratching the massive calipers.

• Brake Booster: The 9Y0 ceramic system operates on a different hydraulic pressure curve. A proper retrofit should ideally include the master cylinder/booster from a Turbo S E-Hybrid for the correct pedal modulation.

3. Weight Advantage

Despite the massive size of the $440\text{mm}$ front rotors, they weigh approximately 50% less than the $415\text{mm}$ iron versions. This removes roughly 25kg to 30kg of unsprung weight from the front end, significantly sharpening the steering response of the heavy SUV chassis.

Condition Assessment for Your Catalog

When listing these parts, high-resolution photos of the disc surface are essential.

• Surface Pitting: Look for small “pits” or a rough texture. A healthy PCCB rotor should look almost like a dark mirror.

• Weight Stamping: Each rotor hat has a Minimum Weight stamped in grams. Always include a photo of this stamp and, if possible, the actual weight of the rotor on a digital scale to prove its remaining life.