Audi A5 S-Line / S5 B9 Sportback 4-Door Carbon Fiber Rear Bumper Diffuser Lip 2020 - 2021

Complete the rear end transformation of your Audi A5 S-Line or S5 B9 Sportback 4-door with this precision-manufactured carbon fiber rear bumper diffuser lip, produced using a 3D design, CNC milling, and full autoclave curing process. Designed exclusively for the A5 S-Line and S5 B9 Sportback 4-door factory rear bumper and supplied as a 2-piece set in an exclusive JC design profile, this rear diffuser lip adds dramatic visual width and a more aggressive lower rear appearance to the B9 Sportback platform. At 173.8cm wide and just 1.65kg, this rear diffuser delivers full-width lower rear bumper coverage for a comprehensive and impactful rear end upgrade with negligible weight addition. The high-gloss epoxy polished surface showcases the natural carbon weave in exceptional detail and provides lasting UV and moisture protection. Adhesive tape is included for a clean, no-drill installation directly to the factory rear bumper.

Features:

• Genuine carbon fiber construction – autoclave cured using 3D design and CNC milling for precise diffuser lip geometry, consistent panel quality, and high structural integrity
• High-gloss epoxy polished surface finish – showcases the natural carbon weave and provides lasting UV and moisture protection over sustained outdoor and driving use
• Exclusive JC design rear bumper diffuser lip profile – adds dramatic visual width and a more aggressive lower rear appearance to the A5 S-Line and S5 B9 Sportback rear bumper
• Supplied as a 2-piece set for a complete and precise rear bumper diffuser installation
• Full-width 173.8cm coverage delivers comprehensive lower rear bumper upgrading for maximum visual impact
• Adhesive tape included for a clean, no-drill installation with no permanent modification to the factory rear bumper

Specifications:

• Condition: 100% Brand New
• Type: Rear Bumper Diffuser Lip
• Material: Genuine Carbon Fiber
• Surface Finish: High-Gloss Epoxy Polished
• Style: JC Design
• Manufacturing Process: 3D Design · CNC Milling · Autoclave Cured
• Dimensions: 173.8 x 69 x 10.5 cm
• Weight: 1.65 kg
• Quantity: 2 pieces per set
• Installation Method: Adhesive Tape (included)
• Fitment: A5 S-Line / S5 B9 Sportback 4-Door Factory Rear Bumper Only
• Purpose: Retrofit / Upgrade

Fitment:

• Audi A5 S-Line B9 Sportback 4-Door (2020–2021)
• Audi S5 B9 Sportback 4-Door (2020–2021)
• Compatible with A5 S-Line and S5 B9 Sportback 4-door factory rear bumper only – not compatible with Coupe, Sedan, or Cabriolet body configurations
• Sportback 4-door body style only – confirm body style before ordering

Contents:

• 2x Carbon Fiber Rear Bumper Diffuser Lip Pieces
• Adhesive Tape for installation 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
• High-gloss epoxy finish maintains the premium carbon surface appearance over prolonged outdoor and driving exposure without fading or yellowing
• JC design rear bumper diffuser lip profile creates a wider and more aggressive lower rear stance on the A5 S-Line and S5 B9 Sportback for a more commanding and track-inspired exterior presence
• Full-width 173.8cm coverage ensures no factory rear bumper areas are left exposed for a complete and finished rear end upgrade
• Adhesive tape fitment is clean and reversible – no drilling, no bumper modification, and no permanent commitment to the factory bodywork required

Installation Notes:

• Adhesive tape supplied – thoroughly clean, degrease, and dry the factory rear bumper surface before fitting to ensure maximum adhesion strength
• No drilling or permanent bodywork modification required – fully reversible installation
• Compatible with A5 S-Line and S5 B9 Sportback 4-door factory rear bumper only – will not fit Coupe, Sedan, or Cabriolet body configurations
• Sportback 4-door body style only – confirm body style before ordering
• Professional installation is strongly recommended for a panel of this width to ensure correct diffuser lip positioning, symmetrical alignment, and a clean finish
• If unsure about compatibility with your specific A5 S-Line or S5 B9 Sportback variant, contact our team with your year, model, and body style 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