Do I need to buy new brake hats for these rotor rings?

No, these GiroDisc rotor rings are designed to be a direct replacement for your factory iron hats. You can reuse your original hats and associated hardware, which simplifies installation and reduces overall cost.

What is the benefit of the slotted rotor design?

The slots on the rotor surface help to evacuate brake dust and gases that build up between the pad and rotor. This action helps maintain consistent friction, prevents pad glazing, and keeps the rotor surface cleaner for improved braking performance, especially during repeated stops.

What else might I need to complete the brake job?

While these are the rotor rings, you will also need new brake pads and potentially new brake fluid for a complete brake service. It's also recommended to inspect your brake lines for wear and tear.

Specifications

Brand: GiroDisc
Part #: D1-114
UPC: D1-114

GiroDisc 05-13 BMW 335i (E9X Incl xDrive) Slotted Front Rings

Name: GiroDisc 05-13 BMW 335i (E9X Incl xDrive) Slotted Front Rings
Brand: GiroDisc
SKU: girodisc-girodisc-05-13-bmw-335i-e9x-incl-xdrive-slotted-front-rings-t14-563646
Price: 739.84 USD
Availability: BackOrder

$739.84

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits 2005-2013 BMW 335i (E9X Incl xDrive).
Rotor rings are made from a high-carbon iron alloy for improved thermal stability.
Features a slotted design to help vent gases and dust, improving braking consistency.
Designed as a direct replacement for factory iron hats, allowing reuse of original components.
Helps prevent pad glazing and keeps rotor surfaces cleaner for better performance.

These rotor rings are designed to fit 2005-2013 BMW 335i models, including those with xDrive.

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About this part

Product Details

These GiroDisc front rotor rings are made from a high-carbon iron alloy, a material chosen for its ability to handle the heat generated during hard braking. The rings are designed to be a direct replacement for the factory iron hats on your 2005-2013 BMW 335i, including xDrive models. This means you can reuse your existing caliper mounting hardware and hats, simplifying the installation process and saving you money on a full rotor assembly.

The key feature here is the slotting pattern. These slots are precisely machined into the rotor surface to help vent gases and dust away from the pad surface. This action helps prevent pad glazing and keeps the rotor surface cleaner, which translates to more consistent braking performance, especially during repeated hard stops. The high-carbon iron construction also contributes to better thermal stability, reducing the risk of warping under extreme conditions. This makes them a solid choice if you're looking for improved stopping power and fade resistance over stock components without needing to replace the entire brake assembly.

When installing these rotor rings, you'll be reusing your original brake hats and caliper mounting hardware. Make sure to clean the hat surface thoroughly before mounting the new ring to ensure a good, flat mating surface. This setup is a popular choice for drivers who want a noticeable improvement in braking performance and durability for their E9X 335i.