SR 992 RACE-SPEC KCCB (KINGBO CARBON CERAMIC BRAKE) DISCS [PORSCHE 992.1 GT3 Cup]
Highlights:
- Race-Spec KCCB discs, co-developed with KBC, Asia's No.1 carbon-ceramic brake maker. An official supplier to Mercedes-AMG, and chosen by Nürburgring record-setting production EVs: the 1,500 PS Xiaomi SU7 Ultra and the 3,019 PS Yangwang U9X.
- Over 16 months of intensive track testing to refine the Race-Spec product.
- Race-Spec non-vented hole design for improved cooling and lifespan (7,500 km+ of track mileage).
- New F1-derived Super Venting Mechanism that cuts peak temperatures by 15% under track conditions.
- Super lightweight: 3.2 kg lighter per corner than OE steel discs, for a total unsprung-weight reduction of 12.8 kg and a clear gain in handling.
- Plug and play: works seamlessly with Porsche Motorsport OE brake pads to deliver the braking performance needed for qualifying.
Application:
- Porsche 992.1 GT3 CUP
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CO-DEVELOPED WITH ASIA'S NO.1 OEM CARBON-CERAMIC SUPPLIER: KBC
Co-developed with KBC (Kingbo Carbon Ceramics), Asia's No.1 carbon-ceramic brake maker in proven OEM series production.
- Chosen by Nürburgring record-setting cars. KBC supplies the discs on the 1,500 PS Xiaomi SU7 Ultra and the 3,019 PS Yangwang U9X, both of which set Nürburgring lap records for production EVs.
- Official Mercedes-AMG supplier. In 2025, KBC passed AMG's supplier audit and became a qualified supplier, with further validation underway with other European luxury brands.
- Real volume, not prototypes. As of September 2026, KBC supplies over 90% of Asia's OEM carbon-ceramic market and holds nearly 20 OEM nominations and development orders.
Every SR Race-Spec KCCB is built to the same OEM standards for validation, quality control and batch-to-batch consistency as the discs on those production cars. Combined with Race-Spec KBCC's track focused features, you get OEM-grade safety and durability with track-level performance.
RACE-SPEC NO-VENTING-HOLE DESIGN FOR EXTENDED LIFESPAN
We have been testing the KCCB discs for track use with the manufacturer for over 16 months. We found that wear consistently began at the venting holes. The new Race-Spec KCCB disc eliminates all venting holes and incorporates the new cooling venting mechanism instead. This design significantly extends service life under race conditions.
For reference, the previous Normal-Spec KCCB discs lasted 7,500 km of 100% track mileage before noticeable wear.
F1-DERIVED SUPER VENTING MECHANISM
During SilverRocket's long-term track testing, a key limitation of carbon ceramic discs in track application became clear: under continuous full-push sessions longer than 30 minutes without cooling laps, the Normal-Spec KCCB discs transfer excessive heat to surrounding brake components.
To solve this, SR developed the Turbofan Aerodisc. It reduces disc temperatures by approximately 150°C, allowing the SR GT4 RS to sustain continuous high-intensity track use without overheating issues.
The new Race-Spec KCCB disc incorporates an F1-derived Super Venting Mechanism that cuts peak temperatures by 15%—delivering cooling performance equivalent to the SR Turbofan Aerodisc.
KCCB Bench Testing Result- ECE 20 (43 stops)
LESS UNSPRUNG WEIGHT = FASTER LAP TIME
Race-Spec KCCB Discs reduce total unsprung weight by 12.78 kg and also lower rotational mass. This delivers a clear boost in driving dynamics and acceleration.
PLUG-AND-PLAY WITH PORSCHE MOTORSPORT OE CALIPERS AND PADS
After thousands of kilometers of pure track testings over 16 months, we are very satisfied with the Race-Spec KCCB disc's plug-and-play characteristic. Because the disc uses long-fiber construction instead of the short-fiber material used by most manufacturers, KCCB disc works directly with Porsche Motorsport OE pads and delivers superb results.
One notable finding is significantly lower pad wear. On the SR GT4 RS, OE pads(made by PFC) last approximately twice as long compared with the OE steel brake discs.
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