380x28mm Replacement Rotor Rings (D54)
Refresh your Girodisc braking system with the GD380.28.54 Replacement Rings, designed for the D54 380x28mm two-piece rotor assemblies. When your existing Girodisc rotors reach their wear limit, these precision-engineered replacement rings restore braking performance, cooling efficiency, and stopping confidence—without the need to replace your aluminum hats.
Each ring is precision-machined in the USA from Girodisc’s proprietary high-carbon cast iron alloy, delivering exceptional thermal stability, strength, and fade resistance under the most demanding driving conditions. Whether on the street or at the track, these 380x28mm rings keep your braking consistent, smooth, and powerful lap after lap.
Features and Benefits
- Direct replacements for Girodisc D54 380x28mm two-piece rotors
- Machined from proprietary U.S.-poured high-carbon cast iron for superior durability
- 48 curved directional vanes maximize airflow and cooling capacity
- Lightweight two-piece design reduces unsprung mass and improves suspension response
- Includes all new drive pins, bolts, and washers for installation
- Fully machined, balanced, and assembled in the USA
Compatibility
Designed exclusively for Girodisc D54 380x28mm rotor assemblies. These rings are only compatible with Girodisc aluminum hats and are not designed for use with OEM or other aftermarket two-piece rotor systems.
Why Choose Girodisc
Girodisc is trusted worldwide for precision-engineered braking components that excel under heat and stress. The GD380.28.54 replacement rings embody the brand’s motorsport heritage, ensuring consistent pedal feel, superior cooling, and long-lasting performance. Replacing just the rings instead of the entire rotor system saves cost while preserving the exceptional quality of your Girodisc setup.
FAQs
Do these include the aluminum hats?
No. The GD380.28.54 kit includes only the iron rotor rings and a complete hardware kit. Your existing Girodisc hats are reused.
Are these compatible with OEM rotors?
No. Girodisc replacement rings are designed solely for Girodisc two-piece rotors and will not fit OEM or other aftermarket assemblies.
Are they directional?
Yes. Each ring features curved internal vanes that must be installed on the correct side for proper cooling and airflow.
What’s included?
A pair of 380x28mm rotor rings (left and right) and a full hardware kit including drive pins, bolts, and washers.
Ready to Refresh?
Bring your Girodisc system back to full braking performance with the GD380.28.54 380x28mm Replacement Rings. Designed for high-performance street and track use, they deliver the strength, balance, and cooling efficiency that define Girodisc. Order your set today from Competition Motorsport and keep your braking power at its absolute best.
