C6 Corvette Grand Sport DBA 4000 Series T3 Rear Brake Rotors

C6 Corvette Grand Sport DBA 4000 Series T3 Rear Brake Rotors

The DBA 4000 Series T3 Rear Brake Rotors, part number DBA42993S, are direct-replacement performance rotors for 2010–2013 C6 Corvette Grand Sport Coupe and Convertible models with the factory J56 heavy-duty iron brake system and LS3 6.2L V8. This listing includes a complete pair of two 340 mm rear rotors for installation with the original Grand Sport rear calipers and mounting brackets.

Product Details

• Brand: DBA – Disc Brakes Australia
• Product Line: 4000 Series T3
• Product Type: Slotted rear brake rotors
• Fitment: 2010–2013 C6 Corvette Grand Sport
• Brake Package: RPO J56 heavy-duty iron brakes
• Position: Rear axle
• Included Quantity: Two rear rotors, complete pair
• Part Number: DBA42993S per rotor
• Construction: One-piece vented rotor
• Rotor Material: High-carbon alloyed iron
• Surface: CNC-machined T3 slots
• Slot Design: Bi-directional
• Internal Ventilation: DBA Kangaroo Paw ventilation
• Brake Pads Included: No
• Shipping: $9.99 in the USA

Benefits

• Includes two rotors for a complete C6 Corvette Grand Sport rear brake service
• Direct factory-size fitment for the J56 rear brake system
• T3 slots help clear brake dust and friction gases from the pad surface
• Bi-directional design allows either rotor to be installed on either side
• High-carbon iron construction supports consistent braking through repeated heat cycles
• Kangaroo Paw ventilation promotes airflow and heat dissipation
• Thermal Stability Profiling helps improve rotor stability and durability
• Suitable for daily driving and demanding performance-street use

What to Expect

The DBA 4000 Series T3 is a factory-size, one-piece rotor upgrade rather than a big-brake conversion. It retains the original C6 Corvette Grand Sport J56 rear calipers and mounting points while adding DBA’s T3 slot pattern, high-carbon iron construction, and performance-focused heat-management features.

The T3 slot pattern is bi-directional, so DBA42993S does not require separate driver- and passenger-side part numbers.

Technical Specifications

• Outside Diameter: 340 mm / approximately 13.4 inches
• Rotor Thickness: 26 mm
• Minimum Thickness: 24 mm
• Overall Height: 49 mm
• Center Bore: 70.7 mm
• Bolt Pattern: 5 × 120.65 mm / 5 × 4.75 inches
• Vane Design: DBA Kangaroo Paw vents

Installation Overview

The DBA42993S rotors install in the factory C6 Corvette Grand Sport rear rotor locations and work with the original J56 rear calipers and mounting brackets. No caliper relocation brackets or rotor adapters are required.

Install both rotors together, clean the rotor and hub mounting surfaces, inspect the brake pads and caliper hardware, and follow the DBA and brake-pad manufacturer bedding procedures after installation.

Important Notes

• This listing is for a pair. Quantity one includes two DBA42993S rear brake rotors.
• Designed for 2010–2013 C6 Corvette Grand Sport models with factory RPO J56 iron brakes.
• Brake pads, calipers, brake fluid, hoses, and installation hardware are not included.
• These are factory-size one-piece rotors, not a two-piece rotor system or big-brake conversion.
• Aftermarket brake conversions may use different rotor dimensions.

CORVETTE COMPATIBILITY

• Generation: C6 Corvette
• Model Years: 2010–2013
• Model: Grand Sport
• Engine: LS3 6.2L V8
• Brake Package: RPO J56 heavy-duty iron brakes
• Brake Position: Rear axle
• Body Styles: Coupe and convertible

Why Buy DBA C6 Corvette Grand Sport Brake Rotors From Custom Corvette Accessories?

Custom Corvette Accessories is enthusiast owned and operated, so correct Corvette brake fitment and clear ordering information matter. This package includes the complete pair of DBA42993S rear rotors required for a C6 Corvette Grand Sport, rather than requiring customers to order two individually packaged rotors.