2017-2019 For A4/S4 B9 Front Bunper RS4 Style Body Kits With ACC Honeycomb Grille Front Lip

• Transformation Target: RS4 Avant-style front clip for B9-generation A4 and S4 sedans
• Bumper Composition: Automotive-spec Polypropylene injection-molded with uniform 3.2 mm nominal wall thickness
• Parts Inventory: Full bumper fascia, ACC-ready honeycomb grille assembly, and integrated front lip spoiler
• Generation Match: 2017–2019 Audi A4 and S4 (B9 chassis, pre-facelift)
• ACC Architecture: Grille-mounted radar dome with an uninterrupted signal path through a thinned hex-cell zone

Product Overview

The B9 A4 is a sharp-looking sedan, but its factory bumper reads more Autobahn cruiser than apex hunter. This RS4 conversion rewrites that script with a broader, more aggressively vented front fascia. The central grille pushes forward at a more vertical rake angle than stock, and the side intakes expand into deep trapezoidal scoops that visually widen the entire front track. A full-width front lip splitter spans the lower edge, catching shadows and giving the nose a lower, more planted optical center of gravity.

Key Features & Build Quality

• Uniform-Wall Injection Shell: Consistent 3.2 mm thickness across the entire bumper skin eliminates thin spots that could warp or ripple after paint curing.
• ACC-Dedicated Grille Window: A precisely masked zone in the honeycomb grid keeps the plastic thin enough for radar transparency while looking identical to the surrounding mesh.
• Splitter-Under-Bumper Design: The lip tucks under the bumper's leading edge and bolts upward into blind threaded inserts — no visible fasteners from the front.
• Raked Grille Angle: The grille surround leans rearward at the top and kicks forward at the bottom, mimicking the aggressive snout rake of the genuine RS4.

Vehicle Fitment & Compatibility

• ✅ Engineered for 2017, 2018, and 2019 Audi A4 and S4 (B9 platform, sedan body only).
• ❌ Not compatible with 2020+ B9.5 facelift models — hood pressing and headlight contours were revised.

Body Shop & Paint Prep Notes

• Block the entire shell with 600-grit on a long sanding board to reveal any low spots in the primer before the first basecoat pass.
• Paint the splitter separately in its own color (or leave it raw black) and attach it only after the main bumper is fully cured and mounted.

💬 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.