GiroDisc D1-032 350 mm Front Replacement Rotor Rings for Porsche 996/997/991

Vehicle Fitment

• Front axle - Porsche models using 350 mm front two-piece GiroDisc rotors, including many 996 / 997 / 991 variants
• Must be used with existing GiroDisc 350 mm aluminum hats - not compatible with OEM one-piece or non-GiroDisc rotors

Features

• High-carbon cast-iron rotor rings manufactured to GiroDisc specifications for thermal stability and fade resistance
• 350 mm diameter - maintains original rotor size and brake geometry
• Floating two-piece design - rings bolt to existing GiroDisc aluminum hats using floating-mount hardware for proper thermal expansion and rotor float
• Sold in left/right pair with full replacement hardware kit included
• Direct bolt-on replacement - no modifications required if used with GiroDisc hats
• Restores rotor surface when original rings are worn or warped - cost-effective refresh over replacing entire rotor assemblies
• Maintains original brake bias, ABS calibration, and caliper compatibility when used with appropriate pads
• Suitable for high-load use - street driving, spirited driving, or track-day applications when properly maintained

Specifications

• Part Number: D1-032
• Rotor Ring Diameter: 350 mm
• Material: High-carbon cast iron
• Mount Type: Floating two-piece ring + hat system (hat reused)
• Sold As: Pair (front left + right rotor rings + full floating-mount hardware)
• Orientation: Front axle only

Included Components

• 2x Front rotor rings (left + right), 350 mm, cast-iron, slotted/vented as per original design
• Floating-mount hardware kit (drive bushings/pins, Belleville washers or spring washers, mounting bolts) for both sides

Product Description

The GiroDisc D1-032 350 mm Front Replacement Rotor Rings are a practical, performance-oriented solution to refresh or restore braking performance on Porsche vehicles originally equipped with GiroDisc 350 mm two-piece front rotors. When the outer cast-iron rings wear down, warp, or reach minimum service thickness, D1-032 allows you to reuse the lightweight GiroDisc aluminum hats - simply remove the used rings and bolt on the new ones using the supplied floating-mount hardware.

Because the rotor rings are precisely machined and balanced, and the floating-mount system preserves rotor float and thermal expansion, the refreshed setup maintains proper brake geometry, pad contact, and brake feel - whether for daily driving, spirited street use, or occasional track sessions. For Porsche owners who value longevity, consistent brake performance, and cost-effective maintenance, D1-032 provides an excellent way to prolong the life of their two-piece rotors without investing in full rotor replacement.