Audi S3 8Y / A3 S-Line Sedan Carbon Fiber Rear Bumper Diffuser 2021 - 2023

Transform the rear end of your Audi S3 8Y or A3 S-Line Sedan with this genuine carbon fiber rear bumper diffuser, precision manufactured using a 3D design, CNC milling, and full autoclave curing process. Designed specifically for the S3 8Y factory rear bumper, this diffuser adds a wider, more aggressive lower rear profile that visually lowers the stance and introduces a more purposeful, performance-oriented rear appearance. The polished and UV-protected carbon fiber surface maintains the deep gloss carbon weave finish over long-term outdoor and driving exposure without fading or surface degradation. Self-tapping screws are included for a secure, rattle-free fitment directly to the factory S3 8Y rear bumper with no adhesive tape required.

Features:

• Genuine carbon fiber construction – autoclave cured using 3D design and CNC milling for precise diffuser geometry, consistent panel quality, and high structural integrity
• Polished and UV-protected surface finish – maintains the deep gloss carbon weave appearance over sustained outdoor and driving exposure without fading or yellowing
• Purpose-designed S3 8Y rear bumper diffuser profile – adds width and aggression to the lower rear bumper for a more planted and performance-oriented rear stance
• Self-tapping screws included for a secure, rattle-free fitment to the factory S3 8Y rear bumper
• Lightweight at 1.15kg – minimal weight addition to the rear of the vehicle

Specifications:

• Condition: 100% Brand New
• Type: Rear Bumper Diffuser
• Material: Genuine Carbon Fiber
• Surface Finish: Polished & UV Protected
• Manufacturing Process: 3D Design · CNC Milling · Autoclave Cured
• Dimensions: 139 x 31 x 15 cm
• Weight: 1.15 kg
• Installation Method: Self-Tapping Screws (included)
• Fitment: S3 8Y Factory Rear Bumper Only
• Purpose: Retrofit / Upgrade

Fitment:

• Audi S3 8Y Sedan 4-Door (2021–2023)
• Audi A3 8Y S-Line Sedan 4-Door (2021–2023)
• Compatible with S3 8Y factory rear bumper only – not compatible with aftermarket or non-S3 bumper configurations
• Sedan 4-door body style only – not confirmed for Sportback variants

Contents:

• 1x Carbon Fiber Rear Bumper Diffuser
• Self-Tapping Screws 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
• UV-protected polished finish maintains the premium carbon surface appearance over prolonged outdoor and driving exposure without fading or yellowing
• Rear diffuser profile adds width and visual aggression to the lower rear of the S3 8Y and A3 S-Line Sedan for a more track-inspired and purposeful exterior stance
• Self-tapping screw fitment provides a more secure and rattle-free installation compared to adhesive tape alternatives
• At 1.15kg, the diffuser adds a comprehensive rear lower bumper upgrade with minimal impact on rear weight distribution

Installation Notes:

• Self-tapping screws supplied – professional installation recommended to ensure correct diffuser positioning, panel alignment, and a clean finish
• Compatible with S3 8Y factory rear bumper only – will not fit aftermarket rear bumpers or non-S3 8Y bumper configurations
• Sedan 4-door body style only – not confirmed for Sportback body variants
• Clean and degrease the factory rear bumper surface at the intended fitment locations before installation
• If unsure about compatibility with your specific bumper configuration or variant, contact our team with your year and model 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