ALL AUDI SPARE PARTS

Orders Ship in 2-5 Business Days Depending on Inventory. Orders From UK & EU are now shipped from GERMANY. 

Menu

2017-2020 Audi A4/S4 Carbon Fiber Aggressive KB Style Diffuser with LED Brake Light | B9 A4/S4

$699.99

Categories: , Brand: ,

Description

Maximize rear aggression on your 2017-2020 Audi A4/S4 B9 with this carbon fiber Aggressive KB Style diffuser featuring an integrated LED brake light — a more pronounced, wider-cut design than the standard KB diffuser for owners who want maximum visual impact at the rear. Built from genuine 2×2 carbon fiber, it fits all B9 A4 and S4 variants with quad exhaust cutout.

Key Features

  • Real 2×2 Carbon Fiber Weave — premium carbon with high-gloss surface finish
  • Aggressive Wide-Body Profile — more pronounced diffuser geometry vs. standard KB style
  • Integrated LED Brake Light — functional third brake light wired for factory-style operation
  • Glossy UV-Protectant Clear Coat — built for long-term exterior durability
  • Hardware Included — mounting bolts and 3M tape in the box
  • Quad Exhaust Cutout Only
  • Free USA Shipping via UPS

Vehicle Compatibility

  • 2017–2020 Audi A4 Non S Line (B9)
  • 2017–2020 Audi A4 S Line (B9)
  • 2017–2020 Audi S4 (B9)

Note: Quad exhaust cutout only. All diffusers are made to this spec.

Installation

Professional installation required. All mounting hardware (bolts and 3M tape) is included. LED brake light wiring integrates with the existing rear harness. Estimated install time: 2-3 hours with lift access and basic tools.

Why Buy From All Audi Spare Parts?

Audi-exclusive parts sourced for exact B9 fitment. Every diffuser is quality-checked before it ships. Fast USA delivery and expert customer support — email us anytime with questions about compatibility or installation.

Reviews

There are no reviews yet.

Be the first to review “2017-2020 Audi A4/S4 Carbon Fiber Aggressive KB Style Diffuser with LED Brake Light | B9 A4/S4”

Your email address will not be published. Required fields are marked *

RELATED PRODUCTS

error: Content is protected !!
Select the fields to be shown. Others will be hidden. Drag and drop to rearrange the order.
  • Image
  • SKU
  • Rating
  • Price
  • Stock
  • Availability
  • Add to cart
  • Description
  • Content
  • Weight
  • Dimensions
  • Additional information
Click outside to hide the comparison bar
Compare