What is the benefit of slotted rotor rings?

Slotted rotor rings help to improve braking performance by venting gases and heat away from the brake pad surface. This reduces the risk of brake fade and helps maintain consistent stopping power, especially under heavy use.

Do these rotor rings come with the mounting hardware?

These are replacement rotor rings only. They are designed to be used with your existing caliper mounting hardware and hat. You will need to reuse your original components or source compatible ones separately.

What material are these rotor rings made from?

The rotor rings are made from a high-carbon iron alloy. This material is chosen for its strength, durability, and ability to withstand the high temperatures generated during braking.

GiroDisc Slotted Brake Rotor Rings 328x28mm GD328.28.54

Name: GiroDisc 328x28mm 10 Pin Holes 54mm Annulus Slotted Rings
Brand: GiroDisc
SKU: girodisc-girodisc-328x28mm-10-pin-holes-54mm-annulus-slotted-rings-t14-563764
Price: 739.84 USD
Availability: BackOrder

GiroDisc 328x28mm 10 Pin Holes 54mm Annulus Slotted Rings

$739.84

On Backorder — Expected to ship by Apr 18, 2026

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

GiroDisc 328x28mm slotted brake rotor rings. Designed for performance braking.

Key Features

GiroDisc 328x28mm slotted rotor rings.
Features 10 pin holes and a 54mm annulus for specific fitment.
Constructed from a high-carbon iron alloy for durability.
Slots are precision-machined to help vent gases and heat.
Designed as a replacement for original iron rotor rings in a two-piece rotor system.
Helps prevent brake fade and maintain consistent stopping power.

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Product Details

If you're looking to upgrade your braking system for more demanding driving conditions, these GiroDisc slotted rotor rings are a solid choice. They're designed to replace the original iron rotor rings on your vehicle, allowing you to keep your existing caliper mounting hardware while gaining the benefits of a high-performance two-piece rotor setup. This means you get improved heat dissipation and consistent stopping power when you need it most, whether that's on track days or during spirited driving on winding roads.

These rings are made from a high-carbon iron alloy, which is known for its durability and resistance to thermal stress. The slots are precision-machined into the rotor surface. These slots serve a crucial purpose: they help to vent gases and heat away from the pad surface, preventing brake fade and keeping your brakes performing optimally. The 10-pin hole design and 54mm annulus are specific features that ensure proper fitment and function with compatible mounting hardware, allowing for the thermal expansion and contraction of the rotor ring without causing stress on the mounting hat.

Installing these slotted rings is a great way to improve your vehicle's braking performance without needing to replace your entire caliper setup. They are designed to be a direct replacement for your original rotor rings, making the upgrade process more straightforward. Remember to consult your vehicle's service manual or a professional mechanic for the correct installation procedure and any specific hardware requirements for your application.