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Porsche > 964 (911) (1989-1994) > 964 (911) RS 3.6L 1991-93 > Brakes >

SPORTS Brake Disc

SPORTS Brake Disc

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DISPLAYING 1 to 3 (of 3 products)
Brake disc / rotor slotted 2-pc front. Porsche 964 turbo / rs - 96535104300, 96535104400, 96535104500, 96535104600
1
Brake disc / rotor slotted 2-pc front. Porsche 964 turbo / rs
A1-046
Product Information
Product Information
Brake disc / rotor slotted 2-pc front. 

SET OF 2

girodisc

front
Fits:
Porsche 964 turbo

Porsche 964 RS

Kit Contains:
Brake Disc complete with centre bell.

Brake Disc Type: 2-Piece Slotted

The Girodisc system is a direct replacement for the OE disc. No modifications are necessary, and it allows the use of unmodified factory pads. The disc will bolt directly to the car and work with factory calipers.

The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in-house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.

The rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.

Once the Girodisc system is in place, simply replace the cast iron rotor when needed.

This product is a special order item, allow 5 - 7 working days for delivery.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

A1-046
96535104300
96535104400
96535104500
96535104600

The product you are viewing cross references to these numbers
Rear Brake Caliper Adapter Kit for 996 Brake. Porsche 964 / 944 / 968 - 9P-64RA996
1
Rear Brake Caliper Adapter Kit for 996 Brake. Porsche 964 / 944 / 968
3604109642
Product Information
Product Information
These brackets are used to fit Rear 996 C2 brake calipers to the rear of a Porsche 964 / 944 / 968 models.
Set of 2 brackets

rear
Porsche 964

Porsche 944 S2 / Turbo ’87
Porsche 968

Material:
6082-T6 Aluminum, Helicoil inserts
Rennline Brake Caliper Adapter Kit for Boxster/993/993TT Calipers. Porsche 964/944S2/968 - CS04
2
Rennline Brake Caliper Adapter Kit for Boxster/993/993TT Calipers. Porsche 964/944S2/968
CS04
Product Information
Product Information
Rennline Brake Caliper Adapter Kit for Boxster/993/993TT Calipers. FRONT

SET OF 2

Fits:
Porsche 964 1989-94
Porsche 944 S2
Porsche 968 1992-95

For 964/944's with medium S4 calipers: Use 304x32mm rotors Porsche part number 92835104360 / 92835104460
For 964/944's with 993TT (Big Red Calipers): Use 322x32mm rotors Porsche part number 96535104500 / 96535104600

Note: Pictures may not show actual product. The adaptor is intended for off road use only. 
DISPLAYING 1 to 3 (of 3 products)
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About SPORTS Brake Disc

Experience race-inspired stopping power with Porsche sports brake discs from Design911. Designed for performance driving, these upgraded brake rotors provide greater heat dissipation, improved bite, and enhanced fade resistance, ensuring confidence under even the most demanding conditions.

What They Are & What They Do
Sports brake discs (or rotors) are precision-engineered components that work with brake pads to generate friction and stop the car effectively. Unlike standard discs, sports variants are often drilled, grooved, or slotted, helping to vent heat and gases, improve braking response, and maintain consistent performance during high-speed or repeated stops.

Why They Fail
Over time, brake discs wear down from heat cycles, friction, and corrosion. Common signs of failure include scoring, warping, cracking, or vibration during braking. Track use or aggressive driving can accelerate wear, while low-quality discs may develop hotspots and fade under stress.

Why They Should Be Replaced
Replacing worn or damaged brake discs restores optimal braking efficiency, pedal feel, and vehicle control. New sports discs not only improve performance and safety but also extend pad life and reduce fade, ensuring Porsche’s legendary stopping precision. Design911 offers genuine Porsche discs for factory performance and aftermarket upgrades for enhanced durability and responsiveness.

Whether you’re restoring a classic 911 or tuning a Cayman or Taycan for track use, our range of sports discs combines precision, reliability, and performance to keep your Porsche braking like new.

Aftermarket Performance Brake Discs
High-quality aftermarket discs featuring slotted or drilled designs for superior airflow, reduced fade, and consistent friction performance.

Front Sports Brake Discs
Heavy-duty front rotors built to handle intense braking loads, offering maximum stopping power and stability under pressure.

Rear Sports Brake Discs
Rear discs designed for balanced braking and improved heat management, ensuring control and composure under repeated deceleration.

Drilled & Grooved Brake Rotors
Advanced rotors engineered to dissipate heat, clean brake pads, and deliver responsive braking for track and fast-road applications.

Motorsport & Track Brake Discs
Race-grade rotors made from high-carbon or composite materials, offering unmatched durability and thermal control for competition use.

Porsche Brake Disc Upgrades: Venting, Drilling, and Grooving Explained

Today we’re talking brake discs: the unsung heroes of your Porsche’s stopping power. What do they do? How can you tell when they need replacing? And what are the upgrade options for enhanced performance? It’s all here. We’ll explore the evolution of brake disc designs, from solid to vented, drilled, and grooved, explaining how each type improves performance. Plus, we’ll break down the materials: durable cast iron, high-carbon steel, and Porsche’s high-performance options like carbon ceramic and surface-coated discs. Whether you’re looking for better braking on the track or a cost-effective daily driving solution, we’ve got you covered.
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