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Alcon Chevrolet Corvette C8 (Aftermarket Wheels) 6 Piston 390x29mm Rear Street Kit - Anodized

Alcon Pro-System Rear Big Brake Kit – 2020+ Chevrolet Corvette C8 | 390×29mm | 4-Piston | BRK.200521

Name: Alcon Pro-System Rear Big Brake Kit – 2020+ Chevrolet Corvette C8 | 390×29mm | 4-Piston | BRK.200521 - Wyld Performance
SKU: alcBRK.200521
Price: 4899.99 USD
Availability: InStock

SKU: alcBRK.200521

Original price was: $5,000.00.Current price is: $4,899.99.

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Category: Big Brake Kits

ALC Rear Brake Kits - Alcon Chevrolet Corvette C8 (Aftermarket Wheels) 6 Piston 390x29mm Rear Street Kit - Anodized

The mid-engine layout of the Chevrolet Corvette C8 changes how weight shifts under heavy braking, putting a massive amount of stress on the rear axle setup. If you are tracking your car, pushing it hard on backroads, or building it for higher power numbers, the factory rear brakes quickly show their limits. The stock calipers trap extreme heat, which boils the fluid, turns your brake pedal mushy, and causes severe brake fade right when you need firm stopping force. The ALC Rear Brake Kit featuring the Alcon 6-piston rear street system (Part Number: BRK.200521) completely fixes this rear-end heat issue. This kit drops in a pair of massive 6-piston anodized aluminum calipers alongside huge 390x29mm two-piece high-friction rotors to give your C8 massive, repeatable stopping power.Alcon specifically builds this rear street kit to handle the heavy thermal tracking demands of the C8 chassis while maintaining real-world driving manners. The 6-piston calipers are machined from high-strength aluminum forgings that won't flex or bend when you slam the pedal down hard from high speeds. Instead of shiny paint that can discolor or chip under extreme track temperatures, these calipers feature a rugged anodized finish that sheds heat quickly and looks great behind custom wheels. The giant 390mm two-piece rotors use an iron friction ring floating on a lightweight aluminum center hat, allowing the disc to expand naturally when hot so you never have to deal with annoying rotor warping or steering wheel vibrations.

Features and Benefits

Forged 6-Piston Anodized Calipers

These heavy-duty rear calipers are forged from high-grade aluminum to stop structural body flex under heavy clamping pressure. The durable hard-anodized finish protects the metal from corrosion and won't discolor, peel, or crack under intense track heat.

Two-Piece 390mm Floating Rotors

By separating the lightweight aluminum center hat from the outer cast-iron brake ring, the rotor can expand and contract naturally when it gets hot. This floating design stops the warping and brake pedal pulsing that common one-piece factory rotors suffer from.

Street-Spec Internal Weather Seals

Unlike raw track-only racing calipers that require a full teardown after every weekend, these feature internal pressure seals and rubber boots. They keep road salt, winter grime, and rainwater away from the pistons so your brakes stay reliable in daily street weather.

Retained Electronic Parking Brake

Alcon handles the C8’s complicated rear electronics by engineering this kit to work alongside your factory parking brake setup. You get the massive upgrade in stopping power without losing your factory electronic e-brake functionality on hills.

Braided Stainless Steel Hoses

The kit comes complete with custom mounting brackets and heavy-duty braided stainless steel brake lines. These lines do not expand or swell under high pressure like old factory rubber hoses, delivering an immediate, firm pedal feel.

Vehicle Fitment Matrix

This performance rear big brake kit is designed as a bolt-on upgrade for the following mid-engine vehicle application:

Year Range	Vehicle Make	Model Submodel	Drivetrain & Wheel Requirements
2020 – 2026	Chevrolet	Corvette (C8 Stingray / Z51)	6.2L V8 LT2 (Rear Axle Only). Requires Aftermarket Wheels for clearance.

Critical Wheel Fitment Warning: This big brake assembly uses extra-wide 6-piston calipers and massive 390mm rotors, making your inner wheel clearance incredibly tight. This kit will not clear factory OEM C8 Corvette wheels. It is designed exclusively to clear high-clearance aftermarket wheels (typically 19-inch or larger with open barrel profiles). Always check your wheel's interior barrel clearance template before buying to ensure the back of your spokes won't hit the Alcon caliper face.

Technical Specifications

Part Number: BRK.200521
Caliper Type: 6-Piston Fixed Radial Mount Forged Caliper
Caliper Finish: High-Heat Industrial Hard Anodized
Rotor Dimension: 390mm Outer Diameter x 29mm Thickness
Rotor Style: 2-Piece Vented Floating Assembly
Axle Placement: Rear Axle Only (Includes Complete Left and Right Assemblies)
Wheel Requirement: Aftermarket Wheels Only (Does not clear factory stock wheels)

Frequently Asked Questions (FAQ)

Will putting a massive 6-piston kit on the rear mess up my Corvette's front-to-rear brake bias?

No, it won’t. A common worry when changing to larger brakes is that the balance will throw off the car's computer or ABS system. Alcon handles this by sizing the internal pistons inside these rear 6-piston calipers to match the exact hydraulic fluid volume requirements of your stock C8 master cylinder and front brake setup. The car maintains its factory balance, but with much higher stopping power.

Do I lose my electronic parking brake function when I install this kit?

No, you keep your parking brake. The C8 uses an electronic parking brake actuator on the rear wheels. Alcon builds this street kit with custom brackets that allow you to retain your factory electronic parking brake setup alongside the new 6-piston calipers, so you still have full e-brake functionality when parking.

Can I run this kit with my factory original C8 wheels?

No, this kit will not fit under stock factory C8 wheels. The wide body of the Alcon 6-piston caliper sticks out too far and will rub or crush against the back of the factory wheel spokes. This kit is built specifically for cars running high-clearance aftermarket wheels that have the necessary barrel room and spoke clearance to clear big brake kits safely.

⚠️ Note: Professional installation is strongly recommended. Pair with the Alcon BRK.200520 front kit for a complete Pro-System brake upgrade.
Part Number: BRK.200521

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Alcon Pro-System Rear Big Brake Kit – 2020+ Chevrolet Corvette C8 | 390×29mm | 4-Piston | BRK.200521