2020-2024 For A4/S4 B9.5 Body Kits With ACC Fog Light Grill Bumper Down Grille Honeycomb Grille Front Lip Splitter | RS4 Style Front Bumper

• Upgrade Route: B9.5 RS4 Avant-spec front bumper conversion for late-model A4 and S4 sedans
• Construction Base: Long-glass-fiber-reinforced Polypropylene at structural mounts with unreinforced PP for the cosmetic shell
• Unboxing List: Full bumper assembly, ACC-ready Gloss Black honeycomb grille, lower lip spoiler, fog cover grilles
• Platform Years: 2020–2024 Audi A4 and S4 (B9.5 facelift, sedan)
• Tech Integration: ACC radar window with laser-etched alignment crosshair for post-install calibration targeting

Product Overview

The B9.5 A4 and S4 received a sharper grille and more angular headlights from the factory, but the bumper itself remained too close to the pre-facelift design for many enthusiasts. This RS4 conversion completes the facelift's promise by adding the RS4's wide, ground-hugging lower section, deeper side intakes with vertical strakes, and an aggressive front lip that visually lowers the entire front clip. The ACC radar pass-through is built into the grille with an alignment aid that makes post-install calibration faster and more accurate.

Key Features & Build Quality

• Hybrid LGF-PP Mounts: The structural bosses where the bumper bolts to the crash bar and fenders are reinforced with long glass fibers for tear-out resistance far beyond unreinforced plastic.
• Vertical Intake Strakes: Each side duct contains three vertical divider blades that break up the opening and add a layered, technical appearance to the bumper corners.
• Laser-Etched ACC Crosshair: A faint but permanent alignment mark is etched into the grille's radar window, giving calibration techs a precise reference point for sensor aiming.
• Deep-Set Lower Section: The lower half of the bumper protrudes forward more aggressively than stock, creating an under-bite profile that visually drops the nose closer to the pavement.

Vehicle Fitment & Compatibility

• Built for 2020, 2021, 2022, 2023, and 2024 Audi A4 and S4 (B9.5 facelift, sedan).
• ACC-equipped cars retain full functionality; the laser-etched crosshair simplifies the mandatory post-install radar alignment procedure.

Body Shop & Paint Prep Notes

• The LGF-reinforced mounts are harder than the surrounding PP — use a step drill at low speed if any bolt holes need minor enlargement; standard twist bits can catch and tear the glass fibers.
• Protect the laser-etched crosshair during painting — a small circular mask over the alignment mark will preserve it through the paint and clearcoat process.

Vehicle Fitment and Compatibility

• ✅ Compatible: 2020-2024 Audi A4
• ❌ Incompatible: B6 (2001-2005) / B7 (2005-2008) / B8 (2009-2012) / B8.5 (2013-2016) / B9 (2017-2019)

💬 If you are unsure about product compatibility, please send your Vehicle Identification Number (VIN) or front and rear photos of your vehicle to us for verification.