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X4M F98 LCI SQ Style Dry Carbon Fiber Rear Diffuser With Brake Light

Fits BMW F98 X4M (LCI) (2022–2025)

Text 609-525-4865

$1,139.99

Extra 10% off with code 10OFF ends in

Limited stock Order now before it sells out.

Usually ships within 5 business days

Shipping to the US: $129.00 Details

Transform the rear-end styling of your BMW X4M F98 LCI with the SQ Style Dry Carbon Fiber Rear Diffuser with Integrated Brake Light. Designed for enthusiasts looking to give their X4M a more aggressive and distinctive appearance, this rear diffuser combines premium carbon fiber construction with an integrated lighting element for an enhanced performance-inspired look.

Manufactured from genuine pre-preg dry carbon fiber, each component is cured under controlled heat and pressure to achieve a tight, consistent carbon fiber weave, excellent strength-to-weight ratio, and lightweight construction. A premium UV-resistant gloss finish provides a deep, high-end appearance while helping protect the carbon fiber from fading and discoloration.

The sculpted SQ Style design adds depth and visual width to the rear bumper while the integrated brake light provides an additional motorsport-inspired detail that sets your X4M apart.

Features

  • SQ Style rear diffuser design
  • Integrated rear brake light
  • Genuine pre-preg dry carbon fiber construction
  • Lightweight and high-strength
  • Premium carbon fiber weave
  • Deep, high-gloss UV-resistant finish
  • Aggressive motorsport-inspired styling
  • Precision-engineered for excellent fitment
  • OEM mounting points
  • No drilling required
  • Plug-and-play wiring harness included

Fitment

  • BMW X4M F98 LCI
  • BMW X4 M Competition

Installation

  • Mounting Method: Utilizes OEM mounting points and factory hardware where applicable
  • Drilling Required: No
  • Brake Light Wiring: Requires connection to the existing taillight for power
  • Wiring: Plug-and-play harness included

Professional installation is recommended, particularly for the brake light wiring and final fitment.

Upgrade the rear of your X4M with the SQ Style Dry Carbon Fiber Rear Diffuser with Brake Light for a more aggressive, premium, and motorsport-inspired appearance.

  • BMW F98 X4M (LCI) 2022
  • BMW F98 X4M (LCI) 2023
  • BMW F98 X4M (LCI) 2024
  • BMW F98 X4M (LCI) 2025

Fitment guarantee — If a part doesn’t fit the vehicle listed on its product page, contact us before installing and we’ll cover the return shipping for a refund or replacement.

Complete your BMW F98 X4M (LCI)

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Why Unit17

Carbon parts from people who drive them

LOCATION: NJ, USA

Founded in 2014, Unit 17 is the brand created by car enthusiasts who specialize in aftermarket carbon fiber for sports cars, luxury vehicles and performance vehicles.

Our company aims to provide the highest quality pre-preg carbon fiber styling parts.  Being able to relate to fellow enthusiasts who share our passion for motoring is the key to Unit 17’s success.

Taking pride in our quality, service, and product fit is one of our top priorities.

Ask about fitment

Tell us what you drive and we’ll confirm this part fits before you order — usually within a few hours.

Year, make, model and any existing mods — e.g. 2022 BMW G80 M3, M Performance lip

The product you’re looking at is sent with your question.