Giro Slotted Brake Disc

Replacement Slotted Brake Disc (390mm) for Rear Axle - Cars With PCCB & Existing GiroDisc Hats. Porsche 981 / 718 / 991

D2-154S

Product Information

Rear replacement brake disc (390mm) - slotted - for cars with PCCB and existing GiroDisc hats.

Includes replacement hardware; the only parts you will reuse are your existing GiroDisc hats.

Porsche 981 Cayman GT4 / RS 2016 - w/ PCCB.
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Porsche 718 (982) Cayman GT4 / RS 2019>> - w/ PCCB.
Porsche 718 (982) Boxster Spyder / RS 2019>> - w/ PCCB.
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Porsche 991.2 Carrera / S / 4 / 4S / GTS / T 2017-19 - w/ PCCB.
Porsche 991 Turbo / Turbo S / GT2 RS 2014-20 - w/ PCCB.
Porsche 991 GT3 / GT3 RS 2014-21 - w/ PCCB.
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Porsche 992.1 Carrera S / 4S / GTS 2019-24 - w/ PCCB.
Porsche 992 GT3 / GT3 RS 2021>> - w/ PCCB.

NOTE: This listing is for replacement discs specifically designed for vehicles already equipped with GiroDisc's two-piece rotor system. Please note that this product cannot be used as a standalone upgrade.

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Related, superseded, cross reference or alternative numbers for comparison.

D2-154S

A2-154SL

A2-154SR

A2-156SL

A2-156SR

The product you are viewing cross references to these numbers

Replacement Slotted Brake Disc (410mm) for Front Axle - Cars With PCCB & Existing GiroDisc Hats. Porsche 981 / 718 / 991

D1-154S

Product Information

Front replacement brake disc (410mm) - slotted - for cars with PCCB and existing GiroDisc hats.

Includes replacement hardware; the only parts you will reuse are your existing GiroDisc hats.

A1-154SL

A1-154SR

A1-156SL

A1-156SR

The product you are viewing cross references to these numbers

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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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Giro Slotted Brake Disc

Giro Slotted Brake Disc

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