C6 Corvette DBA 4000 Series T3 Front Brake Rotors
The DBA 4000 Series T3 Front Brake Rotors are direct-replacement performance rotors for 2005–2013 C6 Corvette Base Coupe and Convertible models. Choose the JL9 standard-brake option with DBA42994S 325 mm rotors or the larger J55 Z51/heavy-duty brake option with DBA42990S 340 mm rotors. This listing includes a complete pair of two front rotors for installation with the matching factory C6 Corvette brake package.
Product Details
- Brand: DBA – Disc Brakes Australia
- Product Line: 4000 Series T3
- Product Type: Slotted front brake rotors
- Fitment: 2005–2013 C6 Corvette Base Coupe and Convertible
- Position: Front axle
- Included Quantity: Two front rotors, complete pair
- Standard Brakes: RPO JL9 – DBA42994S – 325 mm
- Z51 / Heavy-Duty Brakes: RPO J55 – DBA42990S – 340 mm
- 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
- Warranty: DBA 12-month or 12,000-mile limited warranty against manufacturing defects
Benefits
- Complete pair replaces both C6 Corvette front brake rotors
- Separate JL9 and J55 options provide the correct factory brake-package fitment
- Direct replacement for the original calipers and mounting brackets
- T3 slots help clear brake dust, friction gases, and debris from the pad surface
- Bi-directional design allows either rotor to be installed on either side
- High-carbon iron construction supports consistent braking during repeated heat cycles
- Kangaroo Paw ventilation promotes airflow and heat dissipation
- Suitable for daily driving, spirited street use, autocross, and demanding road conditions
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 brake configuration while adding DBA’s performance-focused rotor material, T3 slot pattern, ventilation, and heat-management features.
C6 Corvette Base models were produced with more than one front brake size. The JL9 standard-brake system uses a 325 mm rotor, while the J55 Z51 or heavy-duty brake system uses a 340 mm rotor. Verify the brake RPO code on the vehicle before selecting a variant.
Technical Specifications
- JL9 Part Number: DBA42994S per rotor
- JL9 Outside Diameter: 325 mm / approximately 12.8 inches
- JL9 Rotor Thickness: 32 mm
- JL9 Overall Height: 45 mm
- J55 Part Number: DBA42990S per rotor
- J55 Outside Diameter: 340 mm / approximately 13.4 inches
- J55 Rotor Thickness: 32 mm
- J55 Overall Height: 46 mm
- Minimum Thickness: 30 mm
- Center Bore: 70.7 mm
- Bolt Pattern: 5 × 120.65 mm / 5 × 4.75 inches
- Vane Design: DBA Kangaroo Paw vents
Installation Overview
These DBA front rotors install in the factory C6 Corvette rotor locations and work with the original calipers and mounting brackets for the selected JL9 or J55 brake package. No caliper relocation brackets or rotor adapters are required when the correct option is selected.
Install both rotors together, clean the rotor and wheel-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 front brake rotors.
- Verify the Corvette’s brake RPO code before ordering. Do not select by model year alone.
- RPO JL9: Select DBA42994S with 325 mm front rotors.
- RPO J55: Select DBA42990S with 340 mm front rotors.
- The J55 option includes 2005–2009 Z51 Corvettes and later Base models equipped with the J55 heavy-duty brake system.
- Brake pads, calipers, brake fluid, hoses, and installation hardware are not included.
- These variants do not fit C6 Grand Sport, Z06, ZR1, or aftermarket big-brake systems.
CORVETTE COMPATIBILITY
- Generation: C6 Corvette
- Model Years: 2005–2013
- Models: Base Coupe and Convertible
- Engines: LS2 6.0L V8 and LS3 6.2L V8
- Standard Brake Package: RPO JL9 with 325 mm front rotors
- Z51 / Heavy-Duty Brake Package: RPO J55 with 340 mm front rotors
- Brake Position: Front axle
- Body Styles: Coupe and convertible
Why Buy DBA C6 Corvette Brake Rotors From Custom Corvette Accessories?
Custom Corvette Accessories is enthusiast owned and operated, so correct Corvette brake-package fitment and clear ordering information matter. This page separates the JL9 and J55 front brake systems, includes the complete pair of DBA 4000 Series T3 rotors, and provides the information needed to select the correct setup before ordering.
✅ In-stock items ship within 24–48 hours via Standard Ground.
✅ Free shipping items are available in the Continental US only.
✅ Custom quotes available for 2-Day, Next Day, or Saturday delivery.
✅ Custom or backordered items ship as soon as available.
