do not press the back button…
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 Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
ABS Front Brake Discs
Restore the outstanding braking performance of your Porsche
with ABS Front Brake. Manufactured to OE-quality
standards, these precision-engineered replacement brake discs deliver
exceptional stopping power, excellent heat dissipation and smooth,
vibration-free braking for both everyday road use and enthusiastic performance
driving.
Fits:
- Porsche 718 Boxster Spyder 4.0L 01/2019>>
- Porsche 981 Cayman GT4 3.8L 2015-16
-
Porsche 718 Cayman GT4 718 4.0L
Diameter 380 mm
Brake Disc Thickness 34 mm
Produced from high-quality cast iron and machined to exact tolerances, these brake discs are designed to work seamlessly with OE or aftermarket brake pads while maintaining full compatibility with Porsche's advanced ABS, Porsche Stability Management (PSM) and electronic braking systems.
What Do the Front Brake Discs Do?
Front brake discs are one of the most important safety components on your Porsche. As the brake pads clamp onto the rotating discs, friction is generated to slow and stop the vehicle while converting kinetic energy into heat.
Their primary functions include:
- Providing the braking surface for the front brake pads.
- Dissipating the high temperatures generated during braking.
- Delivering consistent stopping performance.
- Maintaining braking stability during repeated heavy braking.
- Supporting Porsche ABS and PSM systems.
- Providing precise pedal feel and driver confidence.
The front brake discs perform the majority of the vehicle's braking work and are engineered to cope with the demanding performance expected from Porsche GT models.
Why Do Front Brake Discs Wear Out?
Brake discs naturally wear over time through continual
contact with the brake pads. Common causes of wear include:
- Continuous friction from braking.
- High operating temperatures.
- Spirited road driving.
- Track day use.
- Brake pad wear.
- Heat cycling causing gradual disc wear.
- Corrosion from moisture and road salt.
- High vehicle mileage.
Over time, the braking surface becomes thinner and may develop grooves, heat spots or slight distortion, reducing braking efficiency.
When Should the Front Brake Discs Be Replaced?
Replacement is recommended whenever:
- The discs reach Porsche's minimum thickness specification.
- Deep grooves or scoring appear on the braking surface.
- Brake vibration or pedal pulsation develops.
- Heat cracks become visible.
- Excessive corrosion affects the braking surface.
- New brake pads are being fitted to worn discs.
- During a complete front brake overhaul.
For optimum braking performance and safety, Porsche specialists recommend replacing the front brake discs in axle pairs together with new brake pads.
ABS Quality You Can Trust
These ABS Front Brake Discs offer:
- OE-quality replacement performance.
- Precision-machined braking surfaces.
- High-quality cast iron construction.
- Excellent heat dissipation.
- Smooth, vibration-free braking.
- Outstanding resistance to thermal distortion.
- Direct-fit installation.
- Long service life.
- Excellent value for money.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98135140
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Brake disc rotor front by Porsche for Porsche 928 models. Suits selected 928 variants including 928 4.5L, 928S 4.7L and 928S2 4.7L, and is identified by OE references 92835104306 and 92835104401.
What This Product Does Front brake discs provide the friction surface for the brake pads and form a core part of the braking system. They are used to support smooth, consistent braking operation and correct fitment to the intended vehicle.
Symptoms of Fault
- Vibration or judder under braking
- Squealing, scraping or other brake noise
- Visible wear, scoring or a pronounced lip on the disc edge
- Heat spots or corrosion on the braking surface
- Pulling to one side during braking
- Brake warning lights or signs of worn related components
Why Replacement Matters Brake discs are commonly replaced when the existing parts are worn, scored, cracked or corroded. On older vehicles, age and mileage can also affect braking components, so replacing tired parts helps maintain the original braking system layout and intended operation. For Porsche applications, OE references and model coverage should be checked carefully to confirm suitability.
Fits
- Porsche 928 (1978–1995)
- Porsche 928 4.5L 1978–82
- Porsche 928S 4.7L 1981–83
- Porsche 928S2 4.7L 1984–86
Check fitment for your specific vehicle (model, year, engine) before ordering.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92835104
The product you are viewing cross references to these numbers
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- 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
Porsche 944 2.5L 1982-85 ** Cars without ABS - REAR
Porsche 944 2.5L 1986-87 ** Cars without ABS - REAR
Porsche 924 S / Turbo / GT ** Cars without ABS - REAR
Porsche 928 >>1985 - REAR
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435204105
The product you are viewing cross references to these numbers
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- 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
Brake disc rotor, Rear. Porsche 944 / 924S / 924Turbo / 924GT Cars without ABS
Porsche 944 2.5L 1982-85 ** Cars without ABS - REAR
Porsche 944 2.5L 1986-87 ** Cars without ABS - REAR
Porsche 924 S / Turbo / GT ** Cars without ABS - REAR
Porsche 928 >>1985 - REAR
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94435204105ABS
The product you are viewing cross references to these numbers