Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
- Porsche 944 Turbo 2.5L 8V 1985-88
FRONT
Price is for a PAIR of discs

Fits:
Porsche 9442.5L Turbo9/1986-9/1988
FRONT Discs: KBD 431
- Type: GROOVED 6 SLOTS
- Diameter: 298 mm
- Thickness New / Min: 28 / 26
Black Diamond 6 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufactured to ensure they are finished to the most exacting standards.
The 6 Groove range are designed to give a more instant response and greater friction improving braking.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
REAR
Price is for a PAIR of discs

Fits:
Porsche 924 1978-88 All models
Porsche 928 4.5L V8 1978-82
Porsche 928 4.7L V8 S 1980-8/1983
Porsche 928 4.7L V8 S2 9/1983-9/1986
Porsche 944 2.5L Lux 1981-89
Porsche 944 2.5L S 1986-87
Porsche 944 2.7L Lux 9/1988-6/1989
REAR Discs: KBD 2152
- Type: GROOVED 6 SLOTS
- Diameter: 289 mm
- Thickness New / Min: 20 / 18.7
Black Diamond 6 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufactured to ensure they are finished to the most exacting standards.
The 6 Groove range are designed to give a more instant response and greater friction improving braking.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
FRONT
Price is for a PAIR of discs

Fits:
Porsche 911 2.2L 1969-74
Porsche 911 2.3L E, S, T 1969-74
Porsche 911 3.0L SC, SC Cabrio1972-83
Porsche 911 Carrera 2.7L / 3.0L1972-83
Porsche 911 Turbo 3.0L / 3.3L 1972-83
Porsche 924 2.0L Turbo 1978-85
Porsche 924 2.5L S 1985-88
Porsche 944 2.5L Lux1981-89
FRONT Discs: KBD 150
- Type: GROOVED 6 SLOTS
- Diameter: 282.5 mm
- Thickness New / Min: 20.5 / 19.1
Black Diamond 6 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufactured to ensure they are finished to the most exacting standards.
The 6 Groove range are designed to give a more instant response and greater friction improving braking.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
FRONT
Price is for a PAIR of discs

Fits:
Porsche 944 S2.5L 1986-89
Porsche 9442.7L Lux9/1988-6/1989
FRONT Discs: KBD 430
- Type: GROOVED 6 SLOTS
- Diameter: 282.5 mm
- Thickness New / Min: 20.5 / 19
Black Diamond 6 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufactured to ensure they are finished to the most exacting standards.
The 6 Groove range are designed to give a more instant response and greater friction improving braking.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 944 Turbo 2.5L 8V 1985-88
FRONT
Price is for a PAIR of discs

Fits:
Porsche 955 Cayenne 3.2L V6 2003>> (18" Wheels)
Porsche 955 Cayenne S 4.5L V8 2002>>
Porsche 955 Cayenne 4.5L V8 Twin Turbo 2002>>
FRONT Discs: KBD 1234
- Type: GROOVED 6 SLOTS
- Diameter: 350 mm
- Thickness New / Min: 34 / 32
Black Diamond 6 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufactured to ensure they are finished to the most exacting standards.
The 6 Groove range are designed to give a more instant response and greater friction improving braking.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
- Porsche Boxster S 718 2.5L Manual (350 Bhp)
- Porsche Boxster S 718 2.5L PDK (350 Bhp)
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
REAR
Price is for a PAIR of discs

Fits:
Porsche 718 (982) Boxster 2.5L Turbo 2016>>
FRONT Discs: KBD 3048
- Type: GROOVED 6 SLOTS
- Diameter: 299 mm
- Thickness New / Min: 20 / 18
Black Diamond 6 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufactured to ensure they are finished to the most exacting standards.
The 6 Groove range are designed to give a more instant response and greater friction improving braking.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
- Porsche 944S 2.5L 16V 1987-88
REAR
Price is for a PAIR of discs

Fits:
Porsche 944 S2.5L 8/1987-89
REAR Discs: KBD 622
- Type: GROOVED 6 SLOTS
- Diameter: 289 mm
- Thickness New / Min: 20 / 18.6
Black Diamond 6 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufactured to ensure they are finished to the most exacting standards.
The 6 Groove range are designed to give a more instant response and greater friction improving braking.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 944 Turbo 2.5L 8V 1985-88
REAR
Price is for a PAIR of discs

Fits:
Porsche 955 Cayenne 3.2L V6 2003>>
Porsche 955 Cayenne S 4.5L V8 2002>>
Porsche 955 Cayenne 4.5L V8 Twin Turbo 2002>>
REAR Discs: KBD 1235
- Type: GROOVED 6 SLOTS
- Diameter: 330 mm
- Thickness New / Min: 28 / 26
Black Diamond 6 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufactured to ensure they are finished to the most exacting standards.
The 6 Groove range are designed to give a more instant response and greater friction improving braking.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 Turbo S 3.0L 1993-94
REAR
Price is for a PAIR of discs

Fits:
Porsche 964 Carrera 2 3.6L 9/1989-11/1993
Porsche 964 Carrera 4 3.6L 9/1989-11/1993
Porsche 964 Carrera RS 3.6L9/1989-11/1993
Porsche 9442.5L Turbo 9/1986-1992
Porsche 9443.0L S2 1986-1992
Porsche 9683.0L 1991-1995
REAR Discs: KBD 469
- Type: GROOVED 6 SLOTS
- Diameter: 299 mm
- Thickness New / Min: 24 / 22
Black Diamond 6 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufactured to ensure they are finished to the most exacting standards.
The 6 Groove range are designed to give a more instant response and greater friction improving braking.
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 Grooved 6 Brake Discs - Performance Braking with Refined Control & Fade Resistance
Black Diamond Grooved 6 brake discs are engineered to deliver enhanced braking consistency, improved pad contact, and effective heat management for road and fast-road driving. Featuring six precision-machined grooves, these discs continually clean the pad surface, remove brake gases and debris, and maintain stable friction during repeated braking.
Available at Design911, Black Diamond Grooved 6 discs offer a subtle yet effective performance upgrade over plain brake discs, improving pedal response and reducing brake fade while remaining perfectly suited to everyday road use.
What Do Black Diamond Grooved 6 Brake Discs Do?
Grooved 6 brake discs work with quality brake pads and calipers to improve braking efficiency and consistency.
Core Functions:
- Maintain clean, consistent pad-to-disc contact.
- Evacuate brake gases and surface debris.
- Improve heat dissipation during repeated braking.
- Enhance pedal feel and braking response.
- Reduce brake fade during spirited road driving.
The six-groove layout provides controlled pad conditioning without excessive noise or wear.
Why Do Grooved Brake Discs Wear or Fail?
Brake discs are exposed to continuous thermal and mechanical stress.
Common Causes of Wear or Failure Include:
- Thermal
cycling leading to disc wear or surface cracking.
- Repeated
heavy braking accelerating disc wear.
- Heat
build-up reducing braking efficiency over time.
- Surface
corrosion from moisture and road salt.
- Extended service intervals beyond recommended limits.
As discs degrade, braking smoothness and safety are reduced—making replacement essential.
Why Replace with Black Diamond Grooved 6 Brake Discs?
Replacing worn discs with Black Diamond Grooved 6 discs restores braking confidence while adding performance-focused benefits.
Key Benefits:
- Improved braking response over plain discs.
- Enhanced resistance to brake fade.
- Continuous pad surface cleaning for consistent performance.
- Refined pedal feel suitable for daily driving.
- Ideal for road and fast-road performance upgrades.
Grooved 6 discs deliver a balanced improvement without the aggressiveness of heavily grooved or drilled designs.
Highlights
- Six-groove performance brake disc design.
- Improved braking consistency and pad control.
- Enhanced heat management and fade resistance.
- Suitable for everyday road and fast-road use.
- Trusted Black Diamond performance engineering.