SHW Rear Drilled Brake Rotors – Compatible with Porsche 718 Boxster, Cayman, and 981 Models

Description

Upgrade the rear braking performance of your Porsche with this SHW Performance PRX39873 Disc Brake Rotor — a precision-engineered, cross-drilled rotor designed to replace the factory rear rotors on applicable Porsche models. Its cross-drilled surface improves heat dissipation and helps reduce brake fade under heavy use, while cast-iron construction provides long-lasting durability and consistent stopping power. Whether you’re refreshing tired rotors or enhancing brake performance for spirited driving, this rotor delivers OEM-quality fit and reliable performance.

Fitment Notes

• Designed for Porsche rear brake applications including :

• Porsche Boxster: 

  • 2005–2006 Boxster (2.7L H6)

  • 2007–2008 Boxster (2.7L H6)

  • 2009–2012 Boxster (2.9L H6)

  • 2013–2016 Boxster (3.4L H6)

  Porsche Cayman: 

  • 2007–2008 Cayman (2.7L H6)

  • 2009–2012 Cayman (2.9L H6)

  • 2014–2016 Cayman (2.7L/3.4L H6)

  Porsche 718 Boxster & Cayman:

  • 2017–2018 718 Boxster (2.0L & 2.5L)

  • 2017–2018 718 Cayman (2.0L & 2.5L)

• Fits vehicles without ceramic brake options; not compatible with PCCB/ceramic systems. 

• Check vehicle year, model, and rear rotor size before ordering — select using vehicle fitment tool on the product page.

Included

• One (1) rear brake rotor (cross-drilled) — SHW PRX39873

• Mounting surface finished to OEM tolerances for direct fitment

• Note: pads, wear sensors, and hardware not included (sold separately)

Product Specs

• Rotor Diameter: ~299 mm (approx. 11.77″) — typical rear rotor size for select Porsche models.

• Material: High-grade cast iron for strength and wear resistance.

• Design: Cross-drilled surface for enhanced cooling and gas/heat escape. 

• Type: Monobloc, vented rotor construction. 

• Position: Rear axle (single rotor per order).

Product Features

• Cross-drilled surface improves heat dissipation and helps maintain braking performance during aggressive use.

• Cast-iron construction offers durable, long-lasting performance and consistent stopping power. 

• Precision-machined fitment meets or exceeds OEM tolerances for a straightforward replacement. 

• Vented rotor design helps reduce brake fade by increasing airflow and cooling efficiency. 

• Direct compatibility with OEM mounting surfaces and brake systems (non-ceramic).

• OE-quality performance at a value price for maintenance or mild performance upgrades.

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