Shopping security
Two-piece FRP diffusers that bolt to the rear bumper for a sharper, wider stance. Molded from fiberglass-reinforced plastic and shipped in raw FRP condition, these panels give your Z4 a more aggressive rear-end presence without requiring body modifications. Drop them in, prep the surface, and finish to match your paint scheme.
Will these interfere with my trunk seal or hatch opening?
The rear lip design sits low on the bumper and does not encroach on trunk or hatch clearance. Before installation, verify that your vehicle's OEM bumper mounting points align with the diffuser bolt holes to ensure a clean fit.
Can I install these with adhesive, or do I need to drill?
These diffusers are designed for bolt-on mounting to existing bumper structure. No drilling is required if you use the factory bolt points. Ensure all fasteners are tight after installation to maintain stability at highway speeds.
What preparation is needed before painting?
Sand and prep the surface with appropriate grit to create a smooth base for your chosen topcoat. Follow standard automotive paint procedures for adhesion and durability. Test fit both panels before final finish application to confirm alignment with your bumper.
Ships within 48 hours · Estimated delivery Jun 28 - Jul 3
US$40
Get nowSign up to your membership to get coupons up to
15%
Get nowOpportunity to enjoy order discount up to 15% off
Top-Converting Item to Boost Your Average Order