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E9x Performance Parts

BMW E9X M3 Aluminum Undertray & Skid Plate (E90, E92, E93)

BMW E9X M3 Aluminum Undertray & Skid Plate (E90, E92, E93)

€299,00
€299,00
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BMW E9X M3 Aluminum Undertray & Skid Plate (E90, E92, E93) €299,00
BMW E9X M3 Aluminum Undertray & Skid Plate (E90, E92, E93) €299,00

Upgrade your BMW 3 Series (2005–2013) M3 with the ultimate protection and cooling solution.

The OEM plastic undertray on the BMW E9X M3 is notorious for sagging, cracking, or even tearing off during high-speed driving or track sessions. The ST-Trackparts E9X Aluminum Undertray is the definitive heavy-duty replacement designed to withstand the rigors of both the street and the circuit.

Precision Engineering & OEM Aesthetics

Crafted from high-grade, lightweight aluminum, this undertray offers superior protection for your oil cooler and engine components without adding unnecessary weight. To maintain that factory-fresh look, we finish every tray in a satin black powder coat, ensuring it blends seamlessly with your vehicle’s underbody.

Specifications & Compatibility

Chassis: BMW 3 Series E9X M3 (E90 Sedan, E92 Coupe, E93 Convertible)

Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013.

  • Material: Lightweight Aluminum
  • Finish: Powder Coated Satin Black

Stop replacing brittle plastic. Protect your S65 engine and improve your lap times with ST-Trackparts.

  • e9x m3
  • e90 m3
  • e92 m3
  • e93 m3

Key Features:

  • Perfect Fitment: Designed as a true "plug-and-play" solution. It utilizes all original BMW mounting points for a hassle-free installation.
  • GT4 Splitter Compatible: Whether you are running a stock bumper or an aggressive GT4-style front splitter, our undertray is designed to fit perfectly.
  • Enhanced Durability: Replaces the fragile BMW part numbers (including 51757899820) with a rigid aluminum shield that won't sag over time.
  • Optional Brake Cooling: Take your track performance to the next level by adding our integrated brake cooling kit.

Choose Your Setup: Standard or Brake Cooling

We understand that every build is different. That’s why we offer our undertray in two distinct versions:

1. Standard Version
Ideal for daily driven cars or weekend cruisers looking for a permanent fix to the OEM plastic tray issues.

  • Includes: E9X Undertray, Oil Cooler Gurney, Mounting Brackets, and all necessary Hardware.

2. Brake Cooling Edition
The essential upgrade for track-focused E90/E92/E93 M3s. This kit optimizes airflow directly to your braking system to prevent fade.

  • Normal Fitting: For cars using standard E9X M3 Uprights.
  • F8X Retrofit: Specifically designed for owners who have upgraded to F8X (M3/M4) brakes and uprights.
  • Includes: Everything in the standard kit + L/R Brake Ducts, 2x 51mm Air Hoses, 4x Hose Clamps, and L/R Brake Cooling backing plates.

Specifications & Compatibility

Chassis: BMW 3 Series E9X M3 (E90 Sedan, E92 Coupe, E93 Convertible)

Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013.

  • Material: Lightweight Aluminum
  • Finish: Powder Coated Satin Black

Not sure which hardness to choose? View our Strongflex Color & Hardness Guide to find out which bushing suits your driving style and vehicle setup.