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Black Diamond Brake Disc DRILLED
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 914 (1970-1976)
FRONT

Price is for a PAIR of discs

Fits:
Porsche 914/6 1969-72
Porsche 924 2.0L 1976-85
FRONT Discs: KBD 151
- Type: CROSS DRILLED
- Diameter: 257 mm
- Thickness New / Min: 13 / 11.5
Black Diamond Drilled Discs are engineered and made using Computer Aided Design (CAD) and manufacturing to ensure they are finished to the most exacting standards.
The 5 rows of cross drilled holes expel heat and gases quicker than a normal disc and allow extra cooling. This means the pad is less likely to glaze over, more fade resistant, and the rest of the brake system is put under less pressure from the cooler temperatures.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
Black Diamond Drilled Brake Discs - Performance Braking with Enhanced Heat & Gas Control
Black Diamond Drilled Brake Discs are designed to deliver improved braking response, enhanced heat dissipation, and reduced brake fade for road and fast road performance driving. Featuring precision-drilled holes, these discs help vent heat, brake gases, and water from the pad surface, maintaining consistent pad contact and confident braking under demanding conditions.
Available from Design911, Black Diamond drilled brake discs offer a practical performance upgrade over plain discs, improving braking feel and control while retaining everyday drivability.
What Do Black Diamond Drilled Brake Discs Do?
Drilled brake discs work alongside performance brake pads and calipers to enhance braking efficiency.
Core Functions:
- Improve heat dissipation during repeated braking.
- Allow brake gases and dust to escape from the pad surface.
- Enhance braking response and pedal feel.
- Improve wet-weather braking performance.
- Reduce brake fade during spirited driving.
The drilled design helps maintain consistent braking performance across a range of road conditions.
Why Do Drilled Brake Discs Wear or Fail?
Brake discs are subject to high thermal and mechanical stress, particularly in performance use.
Common Causes of Wear or Failure Include:
- Thermal
cycling leading to stress cracking around drill holes.
- Aggressive
braking accelerating disc wear.
- Heat
build-up causing distortion or warping.
- Surface
corrosion from moisture and road contaminants.
- Extended service intervals beyond recommended limits.
As discs wear or degrade, braking smoothness and safety are reduced—making replacement essential.
Why Replace with Black Diamond Drilled Brake Discs?
Replacing worn discs with Black Diamond drilled discs restores braking performance while adding performance benefits.
Key Benefits:
- Improved braking response over plain discs.
- Enhanced resistance to brake fade.
- Better wet-weather and debris-clearing performance.
- Ideal for fast road and performance driving.
- Manufactured to high-quality performance standards.
Black Diamond drilled brake discs offer a strong balance of performance enhancement and road usability.
Highlights
- Precision-drilled brake disc design.
- Improved heat management and braking consistency.
- Enhanced wet-weather braking performance.
- Suitable for road and fast road applications.
- Trusted Black Diamond performance engineering.
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed