GiroDisc A2-049B Rear Brake Rotors – Porsche 981 Boxster Spyder

Description

GiroDisc A2-049B – Porsche Boxster Spyder (981)

Upgrade the rear braking system on your Porsche 981 Boxster Spyder with the applicable rear brake system with GiroDisc A2-049B. This rear rotor replacement uses serviceable slotted cast-iron friction rings and lightweight aluminum center hats in a two-piece floating design intended for demanding performance driving.

Vehicle Applications and Fitment

• Porsche 981 Boxster Spyder
• Correct Spyder rear caliper and pad profile required

Fitment note: The Boxster Spyder uses a model-specific brake configuration. Do not assume base Boxster or Cayman rear pads and rotors interchange with the Spyder.

Brake System and Installation

Check the existing rotor assembly and required installation hardware before ordering.

Two-Piece Floating Construction

GiroDisc combines slotted cast-iron friction rings with aluminum mounting hats and floating drive hardware. This arrangement accommodates heat-related expansion of the friction ring relative to the hat during repeated braking. The system is serviceable: worn friction rings can be replaced separately when compatible replacement rings are available and the hats remain within service limits.

Cooling and Slotted Friction Surface

Internally ventilated friction rings promote airflow through the rotor under rotation. The slotted contact surface is designed to work with suitable performance brake pads during repeated braking events. Proper ducting, pad selection and brake-fluid maintenance remain important for track use.

Brake Pads and Fluid

Confirm the Spyder-specific rear brake pad shape before choosing PFC, Pagid, or another compound. For track use, choose a brake fluid with a suitable boiling-point specification and follow the vehicle and pad manufacturer’s bedding and service guidance.

Specifications

• Manufacturer: GiroDisc
• Manufacturer part number: A2-049B
• Axle: Rear
• Application: Porsche 981 Boxster Spyder with the applicable rear brake system
• Construction: Two-piece floating
• Friction surface: Slotted cast iron
• Center hats: Aluminum
• Ventilation: Internally ventilated
• Quantity: Left and right pair

Before Ordering

Confirm the original brake package, rotor dimensions, caliper configuration and pad shape. PCCB-equipped and previously modified vehicles may require different components. Contact Demon Speed Motorsports for help confirming fitment. Sold as a left and right rotor pair.