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K2 Industries & OUR OWN FAQ's
Audi A5 / S5 8T Facelift Carbon Fiber Rear Bumper Diffuser 2017 - 2019
SKU: 1600387956215
Sale price
$979.99 USD
Regular price
$1,076.00 USD
Shipping calculated at checkout.
2013–2016 Audi A5 / S5 8T Facelift Rear Bumper Diffuser – Carbon Fiber
Upgrade the lower rear profile of your Audi A5 or S5 8T Facelift with this carbon fiber rear bumper diffuser. Spanning 152 cm for full-width lower coverage, it adds width and visual aggression to the factory rear bumper for a more planted, performance-oriented stance in a deep gloss black carbon finish.
Build
- Material: Genuine carbon fiber, manufactured to precise tolerances for consistent panel quality, high structural integrity, and an authentic weave appearance over carbon-look ABS or fiberglass alternatives
- Surface finish: Deep gloss black finish with a UV-resistant coating that showcases the natural carbon weave and resists UV exposure, moisture, and road debris through sustained outdoor and driving use
- Configuration: Single-piece full-width diffuser for the lower rear bumper
- Panel width & weight: 152 cm across · approximately 4 kg
Design & Aerodynamics
- Aggressive stance: Diffuser profile adds width and visual weight to the lower rear for a more planted, track-inspired rear end
- Full-width coverage: The 152 cm span covers the complete lower rear bumper for an integrated finish with no exposed factory sections
- Carbon aesthetic: Directional weave and gloss black finish complement the factory 8T bodywork for a coordinated, motorsport-grade look
Fitment
- 2013–2016 Audi A5 (8T Facelift)
- 2013–2016 Audi S5 (8T Facelift)
- Facelift 8T only — does not fit the pre-facelift 8T, which uses a different rear bumper profile
- Fits the factory rear bumper only — not compatible with aftermarket bumper configurations
- Not compatible with the later B9 generation A5 / S5
Package Contents
- 1 × carbon fiber rear bumper diffuser
- Installation hardware
Installation
- Surface prep: Thoroughly clean and degrease the rear bumper before installation to ensure correct panel seating and secure fitment
- Alignment: Dry-fit and check the diffuser sits centred and even across the bumper, with consistent panel gaps on both sides, before final fitting
- Professional installation strongly recommended — a panel of this size and weight requires careful positioning to achieve symmetrical alignment and a clean finish
- Plan for a second pair of hands during fitting given the panel's width and 4 kg weight
Before You Install
- Confirm your car is the 8T facelift, not the pre-facelift model — the pre-facelift rear bumper is a different profile and this diffuser will not fit it; check your build date if you are unsure
- Verify your factory rear bumper is unmodified before ordering
- Take care when parking rear-in — full-width lower rear panels sit close to kerbs and parking blocks
K2 Industries & OUR OWN FAQ's
How do I check fitment?
Check the listing for your year, make, model, trim and engine. Body style, build date and factory options can matter. If the listing is unclear, send FI Performance your vehicle details and the product link or SKU before ordering.
What comes with this part?
Check the product description for quantities, hardware and accessories. Photos may show the part installed with other components. Ask us if you need to confirm whether a part is sold individually, as a pair or as a kit.
Will I need extra parts or modifications?
That depends on the part and your setup. Check for adapters, wiring, coding, tuning, trimming or additional hardware before booking installation. If you already have aftermarket parts, tell us what’s installed.
What should I check for headlights or tail lights?
Match your factory lighting type, connector and body style. Halogen, HID and LED assemblies can differ even on the same model. Check pre-facelift versus facelift fitment and features such as adaptive lights or leveling.
Should I have a shop install it?
We recommend a qualified installer for wiring, engine, brake and suspension work. Inspect the part and confirm fitment before cutting, drilling, painting or modifying anything.
When will my order ship?
Availability and lead time vary by item. If you’re working around a shop appointment or event, contact FI Performance for a current estimate before ordering.
How do returns and warranty claims work?
Contact FI Performance with your order number before sending anything back. Eligibility depends on the item, its condition and the applicable policy. If there’s damage or a defect, keep the packaging and send photos of the part, label and issue.
Is this part intended for street use?
Check the listing for any use restrictions and confirm the requirements where you drive. If you need a specific approval or certification, ask us to verify it for the exact part number before ordering.
Why should I buy from FI Performance?
FI Performance is a USA-based team of automotive enthusiasts focused on quality, reliability and helpful support. We work closely with manufacturers and can help guide your build from product selection through order support.
How can I contact customer support?
Reach FI Performance by live chat, email or phone for product questions, order help and automotive guidance.
What parts are best for my car and goals?
Tell FI Performance your vehicle, intended use and goals. We can help narrow down the right parts and put together a practical modification plan for your build.
Do you offer financing options?
Eligible financing options are shown at checkout. Select the available financing method during checkout to review payment terms and monthly-payment options.
How do I track my order?
When your order ships, FI Performance sends tracking information by email so you can follow delivery progress and view the estimated arrival date.
What payment methods do you accept?
FI Performance accepts major credit cards, PayPal and any financing options displayed at checkout.
How do I know if I have factory Xenon lighting?
Factory Xenon lights commonly have a blue-tinted output and a short warm-up period. Check your owner's manual or send FI Performance your vehicle details so we can help confirm your factory lighting type.
What is the difference between Halogen, HID and LED lighting?
Halogen lighting is the traditional, affordable option. HID lighting typically provides greater brightness, while LED lighting is energy-efficient and long-lasting. FI Performance can help you select the correct option for your vehicle.
How do I prevent lighting condensation?
Condensation can occur as temperatures change. Lighting assemblies are designed to minimize it; contact FI Performance for guidance if you see persistent condensation or have product-specific questions.
How do I check fitment?
Check the listing for your year, make, model, trim and engine. Body style, build date and factory options can matter. If the listing is unclear, send FI Performance your vehicle details and the product link or SKU before ordering.
What comes with this part?
Check the product description for quantities, hardware and accessories. Photos may show the part installed with other components. Ask us if you need to confirm whether a part is sold individually, as a pair or as a kit.
Will I need extra parts or modifications?
That depends on the part and your setup. Check for adapters, wiring, coding, tuning, trimming or additional hardware before booking installation. If you already have aftermarket parts, tell us what’s installed.
What should I check for headlights or tail lights?
Match your factory lighting type, connector and body style. Halogen, HID and LED assemblies can differ even on the same model. Check pre-facelift versus facelift fitment and features such as adaptive lights or leveling.
Should I have a shop install it?
We recommend a qualified installer for wiring, engine, brake and suspension work. Inspect the part and confirm fitment before cutting, drilling, painting or modifying anything.
When will my order ship?
Availability and lead time vary by item. If you’re working around a shop appointment or event, contact FI Performance for a current estimate before ordering.
How do returns and warranty claims work?
Contact FI Performance with your order number before sending anything back. Eligibility depends on the item, its condition and the applicable policy. If there’s damage or a defect, keep the packaging and send photos of the part, label and issue.
Is this part intended for street use?
Check the listing for any use restrictions and confirm the requirements where you drive. If you need a specific approval or certification, ask us to verify it for the exact part number before ordering.
Why should I buy from FI Performance?
FI Performance is a USA-based team of automotive enthusiasts focused on quality, reliability and helpful support. We work closely with manufacturers and can help guide your build from product selection through order support.
How can I contact customer support?
Reach FI Performance by live chat, email or phone for product questions, order help and automotive guidance.
What parts are best for my car and goals?
Tell FI Performance your vehicle, intended use and goals. We can help narrow down the right parts and put together a practical modification plan for your build.
Do you offer financing options?
Eligible financing options are shown at checkout. Select the available financing method during checkout to review payment terms and monthly-payment options.
How do I track my order?
When your order ships, FI Performance sends tracking information by email so you can follow delivery progress and view the estimated arrival date.
What payment methods do you accept?
FI Performance accepts major credit cards, PayPal and any financing options displayed at checkout.
How do I know if I have factory Xenon lighting?
Factory Xenon lights commonly have a blue-tinted output and a short warm-up period. Check your owner's manual or send FI Performance your vehicle details so we can help confirm your factory lighting type.
What is the difference between Halogen, HID and LED lighting?
Halogen lighting is the traditional, affordable option. HID lighting typically provides greater brightness, while LED lighting is energy-efficient and long-lasting. FI Performance can help you select the correct option for your vehicle.
How do I prevent lighting condensation?
Condensation can occur as temperatures change. Lighting assemblies are designed to minimize it; contact FI Performance for guidance if you see persistent condensation or have product-specific questions.
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