Audi A4 B9 S-Line / S4 Sedan Carbon Fiber Boot Lid Spoiler 2017 - 2019

2017–2019 Audi A4 S-Line / S4 B9 Sedan Single Deck Rear Trunk Spoiler – Carbon Fiber

Add a refined finishing detail to the trunk lid of your Audi A4 B9 S-Line or S4 Sedan with this carbon fiber trunk spoiler. The single-deck profile complements the factory body lines with a subtle yet purposeful upgrade that lifts the rear profile without an overly aggressive appearance.

Build

• Material: Genuine carbon fiber, CNC machined and vacuum moulded for precise spoiler geometry, consistent panel quality, and an authentic weave appearance over carbon-look ABS or painted plastic alternatives
• Surface finish: High-gloss epoxy-polished top coat that showcases the natural carbon weave and resists UV exposure, moisture, and surface degradation through sustained outdoor and driving use
• Configuration: Single-deck spoiler, supplied as a single piece
• Weight: Lightweight carbon construction adds negligible weight to the trunk lid

Design & Finish

• Understated profile: Clean, refined single-deck line that adds a performance-inspired finishing detail without altering the character of the factory body design
• Carbon aesthetic: Directional weave and gloss finish complement the sporty S-Line and S4 bodywork for a coordinated, motorsport-grade look
• Factory-style integration: Precision-molded to follow the contours of the factory trunk lid for a clean, seamless fit

Fitment

• 2017–2019 Audi A4 S-Line B9 Sedan (4-door)
• 2017–2019 Audi S4 B9 Sedan (4-door)
• Fits the factory Sedan trunk lid only — not compatible with aftermarket trunk configurations
• Body style: Sedan only — not confirmed for Avant or Allroad body styles

Package Contents

• 1 × carbon fiber rear trunk spoiler
• Pre-applied adhesive tape for installation

Installation

• No-drill, adhesive-mounted: Installs with the included adhesive tape — no drilling and no permanent modification to the factory trunk lid
• Surface prep: Thoroughly clean, degrease, and dry the trunk lid at the spoiler position before fitting to ensure maximum adhesion
• Alignment: Dry-fit and check the spoiler sits centred and symmetrical across the trunk lid before final adhesion
• Professional installation recommended for the best positioning, panel alignment, and finish

Before You Install

• Confirm your car is an A4 S-Line or S4 B9 Sedan (2017–2019) before ordering — fitment is not confirmed for the Avant or Allroad
• Work in moderate temperatures and allow the adhesive to cure fully before washing the car
• Installation is reversible, but adhesive removal and re-prep may be required if the spoiler needs repositioning