Audi A5 S-Line / S5 B9 Carbon Fiber Rear Diffuser – Prepreg Dry Carbon (2017–2019 Sportback)
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
The rear end of the B9 A5 and S5 deserves the same attention as the front. This Prepreg Dry Carbon Fiber Rear Diffuser is designed to give your A5 S-Line or S5 Sportback a sharper, more aggressive finish while maintaining a refined OEM+ look.
Precision 3D-designed and CNC molded for accurate fitment, this diffuser follows the factory bumper lines for a seamless upgrade. Constructed using advanced prepreg dry carbon and autoclave curing, it delivers exceptional strength while remaining lightweight. The 3K twill weave is finished in a deep high-gloss clear coat that enhances the carbon pattern and provides long-term UV protection.
Whether you're replacing a damaged diffuser or completing a full carbon aero setup, this piece adds depth, contrast, and a true performance-inspired presence to the rear profile.
Features:
- Prepreg dry carbon fiber construction
- Autoclave cured for superior durability and lightweight performance
- Precision 3D-molded for factory-style fitment
- 3K twill weave carbon finish
- High-gloss UV-resistant clear coat
- Enhances rear-end aggression and sporty appearance
Content:
- 1x Rear diffuser
- Mounting hardware included (adhesive tape & screws)
Fitment:
- 2017-2019 Audi A5 S-Line B9 Sportback
- 2017-2019 Audi S5 B9 Sportback
Specifications:
- Material: Prepreg Dry Carbon Fiber
- Weave: 3K Twill
- Finish: High-Gloss Clear Coat
- Position: Rear Bumper
- Installation: Tape & Screw Mount
- Condition: Brand New
- Warranty: 1 Year
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
Clean from a distance. Aggressive up close. This carbon rear diffuser gives your B9 Sportback the finished, performance-driven look that separates a stock rear end from a fully dialed build.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.