LRS Audi A4/S4 B9 Rear Diffuser With Splitters (2016-2019)
Specifications
- Product Code: AUD-EXT-118
- Brand: LRS Performance
- Category: Exterior Parts > Rear Diffuser
- Material: Carbon fibre and fibreglass (FRP) composite
- Finish: Gloss carbon fibre with UV-resistant clear coat
- Style: Aero Style
- Installation Type: Direct Fit
- Stock Status: In Stock
- Price: $1,025 AUD
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Fitment
✓ COMPATIBLE — A4 Sline / S4 B9 Sedan (2016-2019):
• A4 Sline Sedan 2016-2019
• S4 Sedan 2016-2019
• B9 pre-facelift models only
✗ NOT COMPATIBLE:
• Standard A4 (non-S-line) — different rear bumper, no diffuser cut-out
• A4/S4 B9.5 facelift (2020+) — updated rear bumper, different profile
• A4/S4 B8.5 (pre-2016) — previous generation, different rear bumper
• RS4 — different rear bumper configuration
• A4 Avant / Allroad — different rear bumper configuration
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Features
- Carbon fibre and fibreglass (FRP) composite construction — genuine woven carbon fibre outer surface with UV-resistant gloss clear coat finish
- Aero style rear diffuser kit built specifically for the Audi A4 Sline and S4 B9 Sedan platform (2016-2019)
- 3-piece kit — rear diffuser plus left and right rear corner splitters/fins for a complete matched rear-end aesthetic
- Motorsport-inspired aero styling — extends the diffuser aggression outward to the rear corners for a wider, more purposeful stance
- S-line / S4 specific fitment — designed for the S-line and S4 rear bumper cut-out on the B9 pre-facelift generation
- Direct fit to the S-line/S4 rear bumper — no cutting or modification required on compatible vehicles
- Pairs with the LRS Audi A4 Sline/S4 B9 Aero Style Front Lip (AUD-EXT-117) for a matched front and rear Aero Style exterior upgrade
- Gloss carbon fibre finish with UV-resistant clear coat for lasting appearance and weather resistance
- Professional installation recommended for best results
Shipping
LRS Performance offers free standard shipping Australia-wide on all orders.
All products are shipped via sea freight and typically arrive within
5–9 weeks from the date of order confirmation. Once your order has
been dispatched you will receive a tracking number via email.
Please note delivery times are a guide only and may be affected by
customs clearance or factors outside our control.
Returns
We do not accept change-of-mind returns. Please ensure you have
verified your vehicle's compatibility before placing your order —
all fitment information is listed on each product page. If you are
unsure, contact us at admin@lrsperformance.com before ordering.
Faulty or incorrect items will be resolved in accordance with the
Australian Consumer Law.
Common Questions About Our Products
1. Are these carbon fiber parts compatible universally?
Most of these carbon fiber parts are designed for specific car models such as BMW, Mercedes-Benz, and Volkswagen Golf. Always match your vehicle’s model, year, and variant to ensure perfect compatibility and proper fitment.
2. Do these products improve car performance significantly?
These products mainly enhance aerodynamics, reduce weight, and improve visual appeal. While some parts like spoilers and diffusers may slightly improve performance, they are primarily designed for styling and minor airflow optimization.
3. Are installation processes simple or require professionals?
Some items like mirror covers and spoilers can be installed easily using basic tools or adhesive methods. However, for parts like diffusers or engine covers, professional installation is recommended for proper alignment and safety.
4. What materials are used in these products?
Most products are made from high-quality carbon fiber, ABS, or FRP materials. Carbon fiber offers lightweight strength and premium finish, while ABS and FRP provide durability and cost-effective alternatives for exterior upgrades.
5. Do these parts fit multiple year ranges?
Yes, many of these products are designed to fit specific year ranges within a model series, such as 2012–2018 or 2015–2020. Always verify your vehicle’s production year before purchasing to ensure compatibility.
