Girodisc Two-Piece Front Brake Rotors
The Girodisc A1-242 two-piece front brake rotors are a direct replacement upgrade for factory front discs, engineered for drivers who demand race-proven performance and uncompromising reliability. Designed to bolt directly to your car with no modifications required, these lightweight floating rotors maintain factory brake bias and ABS functionality while significantly improving cooling efficiency and reducing fade under hard braking.
Lightweight Performance Meets Motorsport Engineering
Each Girodisc rotor assembly is precision-built in the USA using top-tier materials. The central hat is CNC-machined from 6061-T6 aircraft-grade aluminum, providing superior strength with reduced weight. The outer rings are made from Girodisc’s proprietary high-carbon cast iron alloy—poured, machined, and heat-treated in-house for maximum thermal stability. The floating mount system allows the iron ring to expand independently of the hat under high temperatures, eliminating the warping and cracking often seen in one-piece OEM rotors.
Vehicle Fitment
- Designed for high-performance street and track vehicles (contact us to confirm your specific fitment)
Features
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Direct OEM Replacement: Bolts directly to factory hubs and calipers with no modifications needed.
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Two-Piece Floating Design: Reduces unsprung mass and rotational inertia for better handling and quicker braking response.
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Curved Vane Internal Cooling: The directional vanes function as centrifugal pumps, drawing air through the disc to keep braking temperatures stable.
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High-Strength Hardware: Utilizes 10–12 alloy steel drive pins with anti-noise spring washers for quiet, smooth operation under heavy braking.
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Replaceable Rings: Only the iron ring needs replacement when worn, extending rotor life and reducing long-term costs.
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Made in the USA: All components are designed, machined, and assembled domestically under strict quality control.
FAQs – Girodisc A1-242 Front Rotors
Do these rotors fit OEM calipers? Yes, they are designed as a direct-fit replacement for factory brake systems.
Are these rotors suitable for track use? Absolutely—Girodisc rotors are engineered for track-day durability while remaining street-friendly.
What is the advantage of a two-piece rotor? The separate aluminum hat and iron ring reduce weight, improve cooling, and allow independent thermal expansion to prevent cracking or distortion.
Are they sold as a pair? Yes, all Girodisc rotors are sold and priced per pair.
Upgrade your braking system with Girodisc’s A1-242 two-piece floating front rotors. Engineered for unmatched performance, superior heat control, and lasting durability—these rotors deliver confidence lap after lap, stop after stop.
