Audi A4 B8 S-Line / S4 Sedan Carbon Fiber JC Style Rear Valance Diffuser 2008 - 2012

Upgrade the lower rear profile of your Audi A4 B8 S-Line or S4 Sedan with this genuine carbon fiber rear valance diffuser, precision manufactured using a 3D design and CNC moulding process with full autoclave curing. Featuring a distinctive JC design with a bold wide scoop profile, this rear valance goes beyond a conventional diffuser to create a genuinely assertive lower rear appearance that sets the A4 B8 and S4 Sedan apart from the standard factory finish. The high-gloss epoxy polished and UV-protected surface showcases the natural carbon weave in exceptional detail, maintaining its finish over long-term outdoor and driving exposure. At 142.7cm wide, the valance delivers full-width lower rear bumper coverage for a comprehensive and impactful rear end upgrade. Both adhesive tape and screws are supplied for a secure and precise fitment.

Features:

• Genuine carbon fiber construction – autoclave cured using 3D design and CNC moulding for precise valance geometry, consistent panel quality, and high structural integrity
• High-gloss epoxy polished and UV-protected surface finish – showcases the natural carbon weave in exceptional detail and resists UV exposure, moisture, and surface degradation
• JC design with bold wide scoop profile – a more distinctive and assertive rear lower appearance compared to standard diffuser alternatives
• Full-width 142.7cm coverage delivers comprehensive lower rear bumper upgrading for maximum visual impact
• Dual installation method – adhesive tape for a clean finish or screws for a more permanent and secure fitment

Specifications:

• Condition: 100% Brand New
• Type: Rear Valance Diffuser
• Material: Genuine Carbon Fiber
• Surface Finish: High-Gloss Epoxy Polished & UV Protected
• Style: JC Design with Wide Scoop
• Manufacturing Process: 3D Design · CNC Moulding · Autoclave Cured
• Dimensions: 142.7 x 39 x 14 cm
• Weight: 1.25 kg
• Installation Method: Adhesive Tape & Screws (both included)
• Fitment: A4 B8 S-Line / S4 Factory Rear Bumper Only
• Purpose: Retrofit / Upgrade

Fitment:

• Audi A4 B8 S-Line Sedan 4-Door (2008–2012)
• Audi S4 B8 Sedan 4-Door (2008–2012)
• Compatible with A4 B8 S-Line and S4 factory rear bumper only – not compatible with aftermarket or non-S4 bumper configurations
• Sedan 4-door body style only – not confirmed for Avant or Allroad body variants

Contents:

• 1x Carbon Fiber Rear Valance Diffuser
• Adhesive Tape included
• Mounting Screws included

Benefits:

• Genuine autoclave carbon fiber delivers an authentic carbon weave appearance and superior strength-to-weight ratio over carbon-look ABS or fiberglass alternatives
• UV-protected high-gloss epoxy finish maintains the premium carbon surface appearance over prolonged outdoor and driving exposure without fading or yellowing
• JC wide scoop design creates a more distinctive and aggressive rear lower appearance than conventional flat diffuser profiles – a bold statement rear end upgrade on the A4 B8 and S4 platform
• Full-width 142.7cm coverage ensures a comprehensive lower rear bumper upgrade with no factory bumper areas left exposed
• Dual installation method provides full flexibility – adhesive tape for a clean finish or screws for a more secure and permanent fitment

Installation Notes:

• Adhesive tape and screws both supplied – select the installation method that best suits your preference for permanence and finish quality
• For adhesive tape installation – thoroughly clean, degrease, and dry the factory rear bumper surface before fitting to ensure maximum adhesion strength
• For screw installation – professional fitting is recommended to ensure correct valance positioning, panel alignment, and a clean finish
• Compatible with A4 B8 S-Line and S4 factory rear bumper only – will not fit aftermarket rear bumpers or non-A4 B8 bumper configurations
• Sedan 4-door body style only – not confirmed for Avant or Allroad body variants
• If unsure about compatibility with your specific A4 B8 or S4 variant, contact our team with your year, model, and trim level before ordering

Shipping Information:

• Processing Time: 2-5 business days for warehouse stock items
• Made-to-Order: Please allow 2-4 weeks for shipping if product requires custom manufacturing

Warranty:

• 12-month standard warranty from date of purchase
• Contact our support team for assistance with any issues