Carbon Fiber/FRP Rear Trunk Spoiler for 2017–2020 Audi A5 S Line / S5 B9 Sportback

Carbon Fiber / FRP Rear Trunk Spoiler for 2017–2020 Audi A5 S Line / S5 B9 Sportback (4-Door Hatchback)

The Audi A5 B9 Sportback (F5A, 2017–2020) is the five-door hatchback variant of the MLB Evo-platform A5 — Europe's most popular A5 body style, combining the A5 Coupe's sloping roofline with a practical liftgate and a long, sweeping rear roofline that terminates at a wide, near-horizontal trunk lid trailing edge. Unlike the A5 Coupe's near-vertical rear lid, the Sportback's trunk lid surface is nearly flat across its full width, making the trunk trailing edge the primary visible surface of the rear end from a low-angle three-quarter view. This rear trunk spoiler adds a clean trailing edge lip accent at the Sportback's trunk lid rear edge, sharpening the rear roofline termination and adding a mild downforce element at the rear lid's widest point. Available in genuine 3×3 carbon fiber or Glossy Black FRP. Tape-on, no drilling. Fits 2017–2020 Audi A5 Sportback and S5 Sportback (B9 only, not B8/B8.5, not B9.5 without confirmation).

A5 Sportback Trunk Trailing Edge — Why a Spoiler Here

The B9 A5 Sportback's near-flat trunk lid — one of the widest and most horizontal trunk surfaces in the Audi lineup — creates a large, low-drag upper rear surface that benefits aerodynamically from a trailing edge lip: the lip creates a controlled separation point for airflow leaving the trunk surface, reducing turbulent wake behind the Sportback's liftgate and adding mild rear-axle downforce. Audi Sport's own Aero Package for the B9 A5/S5 Sportback includes a rear spoiler at exactly this trunk trailing edge position, validating this spoiler geometry as factory-acknowledged aerodynamic and aesthetic upgrade for the B9 Sportback platform.

Carbon Fiber vs Glossy Black FRP

• Carbon Fiber ($192.99): Genuine 3×3 twill weave carbon fiber with UV high-gloss double-layer clear coat. Visible carbon weave across the full spoiler width. The correct choice for B9 A5/S5 Sportback builds combining multiple carbon exterior elements (mirror caps, front splitter, diffuser) where weave consistency creates a coherent Audi Sport carbon exterior language. At $192.99 for a 2 kg tape-on spoiler, the most accessible entry point for visible carbon fiber at the B9 Sportback's rear end.
• Glossy Black FRP ($138.99): Fibreglass composite with a high-gloss black finish — no carbon weave pattern. Adds a clean, high-gloss trailing edge accent to the B9 Sportback's trunk lid at a $54 saving over the carbon fiber variant. The correct choice for A5 Sportback owners who want a rear trunk lip upgrade in a surface finish consistent with the factory gloss black exterior trim, without the carbon weave pattern.

Key Features

• B9 A5 / S5 Sportback Fitment (2017–2020, All Trims): CNC-moulded for the Audi B9 A5 Sportback and S5 Sportback (F5A) trunk trailing edge, 2017–2020. All trim levels including S Line confirmed. NOT for A5 Coupe, Cabriolet, A4/S4 Sedan, B8/B8.5, or RS5 (contact us first). B9.5 (2020+ LCI): contact us with trunk photos before ordering.
• Audi Sport Rear Spoiler Reference: Audi Sport's Aero Package for the B9 A5/S5 Sportback includes a rear trunk trailing edge spoiler at this position — factory validation of this spoiler geometry as an Audi Sport-grade aerodynamic upgrade on the B9 Sportback platform.
• Carbon Fiber or Glossy Black FRP: CF ($192.99) — 3×3 weave, UV gloss, carbon exterior build. FRP ($138.99) — gloss black, $54 saving, non-weave finish. Same B9 Sportback trunk trailing edge geometry on both variants.
• Tape-On, No Drilling: Self-adhesive tape included. Clean trunk surface, test fit, confirm alignment left/right/centre before final bonding. No modification to factory trunk lid. Professional installation recommended for best alignment on the B9 Sportback's wide trunk trailing edge.
• UV-Resistant Finish: Double-layer UV-protective clear coat on both variants — resists fading on the B9 Sportback's exposed trunk trailing edge surface.

Product Specifications

FAQ

Does this fit Audi A5 Sportback?

Yes — fits 2017–2020 Audi A5 Sportback (F5A, B9) all trim levels including S Line. NOT for previous B8/B8.5 A5 Sportback.

Does this fit Audi S5 Sportback?

Yes — fits 2017–2020 Audi S5 Sportback (F5A, B9). Same trunk lid as the A5 Sportback.

Does this fit Audi RS5 Sportback?

The RS5 Sportback shares the B9 body. Contact us with your RS5 Sportback's rear trunk photos to confirm fitment before ordering.

Does this fit the 2020–2023 B9.5 LCI?

The 2020 LCI (B9.5) updated the exterior. Contact us with rear trunk photos to confirm B9.5 trunk trailing edge compatibility before ordering.

Does this fit Audi A5 Coupe or Cabriolet?

No. This spoiler is designed for the Sportback (5-door hatchback) trunk lid only. NOT for A5 Coupe (2-door) or Cabriolet.

What is the difference between Carbon Fiber and FRP?

Carbon Fiber ($192.99) has a visible 3×3 carbon weave with glossy UV-protected finish. Glossy Black FRP ($138.99) is fibreglass composite with a solid gloss black surface finish — no carbon weave pattern, $54 saving.

Note: Fits 2017–2020 Audi A5 / S5 B9 Sportback (4-door) all trims. NOT for A5 Coupe, Cabriolet, A4/S4 Sedan, B8/B8.5, or B9.5 (contact us first). Tape-on, no drilling. Test fit before final bonding.

Add Audi Sport rear trunk spoiler aesthetics to your B9 A5 or S5 Sportback in carbon fiber or gloss black FRP — add to cart or contact us to confirm B9.5 or RS5 fitment.