Corvette C5, C6 Z51 Front Rotors
Transform your Corvette’s braking performance with Girodisc 2-piece 340mm front rotors—precision-engineered for the C5 and C6 Z51 brake setup. Whether you’re replacing worn OEM rotors or converting your base model to the Z51 brake package, these lightweight, fully floating rotors provide stronger, more consistent braking with less unsprung weight and improved cooling efficiency.
Designed as a direct replacement for the OEM 340mm Z51 rotor (also known as the “J55” heavy-duty package), each Girodisc assembly weighs just 20.7 lbs per rotor—saving valuable rotational mass. The hats are machined from 6061-T6 aluminum and anodized for durability, while the cast-iron rotor rings feature Girodisc’s proprietary high-carbon alloy for superior thermal management and strength under repeated high-load stops.
Precision Performance for Street and Track Corvettes
Vehicle Fitment
- Corvette C6 Z51 (340mm front rotors)
- Corvette C5 and C6 Base (with Z51 caliper bracket GM #88964166 or equivalent)
Girodisc A1-096 Features
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Direct-fit upgrade: Bolts directly to OEM or Z51 caliper setup with optional bracket.
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Lightweight 2-piece construction: Weighs only 20.7 lbs per rotor vs. heavier one-piece OEM rotors.
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Proprietary high-carbon cast iron: Delivers exceptional strength, heat tolerance, and durability under track conditions.
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Curved vane design: 48 internal vanes pull cooling air through the rotor for improved fade resistance.
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Floating mount system: Spring clips and Belleville washers allow controlled float for quiet, consistent braking.
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Made in the USA: All components machined, finished, and assembled in-house by Girodisc in Bellingham, WA.
Specifications
- Diameter: 340mm
- Thickness: 32mm (replace at 30mm minimum)
- Weight: 20.7 lbs per rotor
Girodisc A1-096 FAQs
Can these rotors be used on a C5 or base C6? Yes. You’ll need the Z51 front caliper bracket (GM #88964166) or equivalent to complete the conversion.
Are these rotors lighter than OEM? Yes. At just 20.7 lbs each, they reduce unsprung and rotational mass for quicker handling response.
Are replacement rotor rings available? Yes. Replacement rings (part number D1-096) can be installed on the same hats when needed.
Do these work for both street and track? Absolutely. Girodisc rotors are engineered for quiet street use and high-performance track reliability.
When should I replace the rings? Replace at or below 30mm thickness, or if any crack reaches the edge of the ring.
Step up your Corvette’s braking performance with Girodisc 340mm front rotors—lightweight, durable, and engineered for precision on both street and circuit.
