GiroDisc A1-035 340mm Front Rotors – Porsche 981 Boxster / Cayman Base

Description

GiroDisc A1-035 – Porsche Cayman/Boxster (981) Base 340mm

Upgrade the front braking system on your Porsche 981 Boxster / Cayman base models with the applicable front brake configuration with GiroDisc A1-035. This 340mm front brake rotor system 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 base
• Porsche 981 Cayman base
• Factory brake configuration must match the GiroDisc A1-035 application

Fitment note: The 340mm front rotor size is an important specification. Whether a particular car needs caliper relocation spacers or longer bolts must be confirmed against the original front brake package.

Brake System and Installation

Do not assume caliper spacers or longer bolts are included without checking the kit contents.

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

Retain the correct front pad shape for the installed calipers and use an iron-compatible 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: A1-035
• Axle: Front
• Application: Porsche 981 Boxster / Cayman base models with the applicable front brake configuration
• Rotor diameter: 340mm
• 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.