StopFlex Carbon Ceramic Brake Disc Kit (Occasionally Track-Day)
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
StopFlex Track-Day Carbon Ceramic Brake Disc Kit (C/SiC)
Built for fast-road driving plus real track-day heat. Made-to-order discs in your exact sizes, paired with StopFlex CNC-machined Aluminum Hats and a StopFlex CCB-optimized Pad Set (Match Your Calipers).
What changes for you (real-world):
- Less rotating mass: carbon-ceramic systems are commonly about ~50% lighter than comparable steel/iron discs, improving response and reducing load on suspension and hubs.
- Cleaner wheels: low visible dust, no orange “flash rust” after rain or storage.
- Longer replacement cycle: designed for 250,000–300,000 km typical road use when used as intended.
- Track-day consistency: tuned to stay stable across repeated high-energy stops when cooling and fluid are managed correctly.
Fitment confirmation (we keep it simple):
- Year / Make / Model / Wheel Size (VIN helps)
We build the disc size (330–440 mm), hat geometry, and pad spec around your wheels and current brake setup so the kit installs cleanly and clears the barrel/spokes.
Bolt-On Package List
| Item | What it is | Why it matters |
|---|---|---|
| StopFlex Street Carbon Ceramic Discs (C/SiC) | Track-day spec friction rings with a durable face for repeated heavy stops. | Stable friction surface under heat, less corrosion hassle, and a long replacement cycle for street-biased use. |
| StopFlex CNC-machined Aluminum Hats | Precision hats matched to your application. | Correct alignment and clearance with your hub/wheel package, with consistent pad sweep. |
| StopFlex CCB-optimized Pad Set (Match Your Calipers) | Pad compound selected for carbon-ceramic discs and matched to your caliper shape. | Helps maintain a stable friction layer and avoids the “wrong pad on CCB” problems (noise, inconsistent bite, accelerated surface wear). |
Note: This page is for the disc kit. If you want a complete disc + caliper conversion, we can quote a full package separately.
Carbon-Ceramic vs. Cast-Iron / Steel Discs
| Item | StopFlex Carbon-Ceramic (C/SiC) | Cast-Iron / Steel Disc |
|---|---|---|
| Typical disc weight (same size class) | Often about ~50% lighter than steel/iron discs of similar size. | Heavier rotating mass at the wheel. |
| Service life (typical road use) | 250,000–300,000 km target for typical road use (conditions matter: vehicle weight, driving style, pad choice). | Common guidance is ~30,000–70,000 miles (≈48,000–113,000 km), strongly usage-dependent. |
| Corrosion & appearance | No flash rust; stays visually clean behind the wheel. | Surface rust after rain/storage is normal; cosmetic “orange” is common. |
| Brake dust | Typically less visible dust with a CCB-optimized pad set. | Dust level depends on pad; common street/track pads can be noticeably dusty. |
| High-temperature stability (material + failure modes) | Carbon-ceramic discs are built to remain structurally stable under repeated high-energy stops. Common “wrong-use” risks are impact damage (chips) and pad mismatch (unstable friction layer / accelerated wear). | Cast iron is robust for road use, but high disc temperatures and thermal gradients can lead to hot spotting and thermal cracking in hard repeated use. In lab testing for brake-disc materials, temperature cycles up to around 600°C are commonly used to evaluate behavior under severe thermal load. |
| Heat flow & cooling needs (why ducts matter) | Lower heat flow into the rotor body means more heat can stay near the friction surface. Fine for street and short stints, but long lapping sessions often need better ducts/venting so discs, pads and fluid don’t cook. | Grey cast iron has relatively high thermal conductivity, so heat spreads quickly through the rotor and into vanes/airflow. That can help with steady heat dumping—until repeated heavy use overwhelms the system. |
Bottom line: If you’re mainly a fast-road driver with occasional track days and you care about clean wheels + long-term durability, carbon-ceramic is a clear step up. If you run long, heavy track days without cooling upgrades, plan your ducting and airflow before you switch.
Choose Your Disc Style
Three variants built around the same long-fiber carbon-ceramic core. Pick the one that matches how you actually drive.
Street
- Face design: Drilled + Big Cooling Holes
- Cooling core: Directional internal venting
- Coating: Ceramic coating (street durability + clean look)
- Use: Daily, canyon runs, highway pulls, short light track sessions
Track-Day
- Face design: Blank + Hive Cooling Holes
- Cooling core: Hive-style internal cooling
- Coating: Ceramic coating (balanced street + heat tolerance)
- Use: Street + occasional track days (best with proper brake ducts)
Note: This kit is built around the Track-Day spec.
Race-Only
- Face design: Blank + Hive Cooling Holes
- Cooling core: Hive-style internal cooling
- Coating: No coating (race-focused surface)
- Use: Dedicated track/race cars with strong cooling and regular inspections
Note: Not intended for street use.
Technical Specifications
| Disc material | StopFlex carbon-ceramic composite (C/SiC), engineered for street use and repeated high-energy stops. |
| Disc diameter range | 330–440 mm (application-specific) |
| Construction | Two-piece disc system with StopFlex CNC-machined Aluminum Hats |
| Pad set | StopFlex CCB-optimized Pad Set (Match Your Calipers) |
| Track-Day face | Blank + Hive Cooling Holes with ceramic coating (balanced street + track-day duty) |
| Compatibility | Matched to your existing calipers and wheel package through the fitment confirmation step. |
Specs are finalized per vehicle and wheel clearance. We prefer “correct fitment + correct pad match” over generic claims.
FAQ
Is this a universal kit?
No. The kit is made-to-order. We confirm your Year / Make / Model / Wheel Size (VIN helps) and build the hat geometry + disc size to clear your wheels and match your setup.
Will it work from cold on the street?
Yes—when paired with the specified StopFlex pad set. The goal is normal street bite from cold. We’ve also seen stable street operation in extreme winter climates, including about −30°C conditions (Siberia).
How long do the discs last?
For typical road use, StopFlex targets 250,000–300,000 km. Real life depends on vehicle weight, driving style, pad choice, and how often you do track sessions.
Do I need cooling upgrades for track use?
For street and short stints, you’re fine. For long lapping sessions, plan proper ducts/venting. Carbon-ceramic tends to keep more heat near the friction surface—so pads and fluid become the limiting factor without airflow.
Can I use any pad that fits my calipers?
Not recommended. Pad chemistry matters more on carbon-ceramic. A wrong pad can create unstable friction, noise, and unnecessary surface wear. Use the StopFlex CCB-optimized Pad Set specified for your calipers.
Is there a bed-in process?
Yes. A controlled bed-in builds a consistent friction layer. We provide a simple procedure with the kit (moderate stops, then cool-down—avoid long pedal holds while hot).
Real Customer Cases & Reviews
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