APR PERFORMANCE CARBON FIBER REAR DIFFUSER UNDERTRAY FOR C7 CHEVROLET CORVETTE STINGRAY AND Z06
APR Performance Carbon Rear Diffuser Under-Tray for C7 Chevrolet Corvette Stingray / Z06 / ZR1 / Grand Sport
The APR C7 diffuser under-tray is the carbon fiber panel that sits under the back of the C7 Corvette, ahead of APR’s rear diffuser, and it fits the Stingray, Z06, ZR1, and Grand Sport. On its own, a diffuser can only work with whatever airflow reaches it; the under-tray gives that air a flat, smooth surface to follow first, so it arrives at the diffuser cleaner and exits into the low-pressure zone behind the bumper with less turbulence. APR sells it separately for owners who bought the Ver. II diffuser without under-tray and want to complete the setup.
Carbon Fiber Construction
- The under-tray is made from carbon fiber to match APR’s C7 rear diffuser, keeping weight low while giving the panel enough stiffness to hold a flat surface under airflow at speed. Because it mounts low on the car, a rigid panel matters more here than almost anywhere else on the body.
Cleaner Air Into the Diffuser
- Air under a car tends to tumble around the exhaust, suspension, and chassis before it reaches the rear bumper. The under-tray covers part of that area with a smooth carbon surface, giving the air a more direct path to the diffuser, which helps cut rear lift and lets a rear wing work with steadier airflow.
Completes the Ver. II Diffuser Setup
- APR offers its C7 Ver. II diffuser in two forms: diffuser only and diffuser with under-tray. This under-tray on its own lets a car that started with the diffuser-only version reach the same setup later, without buying the diffuser twice.
Features
- Carbon fiber construction
- Sits ahead of APR’s C7 rear diffuser
- Smooths underbody airflow into the diffuser
- Sold as the under-tray only
- Fits C7 Stingray, Z06, ZR1, and Grand Sport
Applications
- Chevrolet Corvette Stingray: C7 | 2014-2019
- Chevrolet Corvette Z06: C7 | 2015-2019
- Chevrolet Corvette Grand Sport: C7 | 2017-2019
- Chevrolet Corvette ZR1: C7 | 2019
Notes
- Under-tray only; the rear diffuser is not included
- Made to pair with APR’s C7 rear diffuser; the Ver. II diffuser without under-tray is sold separately
Frequently Asked Questions
- Does this include the rear diffuser? No. This listing is the under-tray panel only. For the diffuser and under-tray together, APR offers the Ver. II diffuser with under-tray (AB-277030).
- Which C7 models does it fit? APR lists fitment for the C7 Stingray, Z06, ZR1, and Grand Sport, covering 2014 to 2019.
- Do I need the APR diffuser for this to work? The under-tray is designed to sit ahead of APR’s C7 rear diffuser and work together with it. It is meant as an add-on to that diffuser, not a standalone aero piece.
- Why buy it separately instead of the kit? It suits owners who already run the diffuser-only version and want to add the under-tray later. Buying the diffuser with under-tray kit from the start makes sense for a car that has neither piece yet.
About APR Performance
APR Performance has built aerodynamic components for road racing, time attack, and street performance since 1999, working from the same wind tunnel and CFD-driven process across every product line. The company designs and manufactures its own carbon fiber wings, splitters, diffusers, and canards in-house, using pre-preg materials and autoclave curing rather than outsourced wet-layup production, which is why APR parts carry SCCA and other sanctioning body approvals across multiple race classes. From early Honda and Mitsubishi platforms to current Porsche, BMW, and Corvette applications, APR’s approach has stayed the same; every component has to earn its place through measurable aerodynamic gain, not just visual styling.
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- Please review the product dimensions carefully to ensure the right fit for your space
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Product Size Guide
Please refer to the general size reference below to better understand how this product may fit into your space. Dimensions may vary slightly depending on the design and materials.
| Category | Small | Medium | Large |
|---|---|---|---|
| Decor & Accessories | Up to 10″ | 10″ – 20″ | 20″+ |
| Tables | Up to 30″ | 30″ – 60″ | 60″+ |
| Seating | 1 Seater | 2–3 Seater | 4+ Seater |
| Storage Units | Compact | Standard | Large Capacity |
| Lighting | Small Fixture | Standard Fixture | Large Fixture |
Note: For exact product dimensions, please refer to the specifications section above. This guide is intended as a general reference only.
APR PERFORMANCE CARBON FIBER REAR DIFFUSER UNDERTRAY FOR C7 CHEVROLET CORVETTE STINGRAY AND Z06
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