E46 M3 Front Splitter

Buildjournal Front Race Splitter – E46 M3


Increase downforce with our E46 M3 Front Race Splitter. Our hand-cut splitter is made with 0.25″ Alumalite material which is an aluminum composite with a high-density corrugated polypropylene core that weighs only 9 lbs! This will fit E46 M3 as well as E46 non-M with M front bumper. 100% compatible with our Quick-Release Adjustable Front Splitter Brackets and Splitter Brace.

This product is built to order. Lead time takes 3-5 days.

Add-On Feature

SKU 16549 Categories , Tag

Buildjournal E46 M3 Aero Program

Sturdy, Light Construction

Our splitter is made with 0.25" Alumalite material which is an aluminum composite with a high-density corrugated polypropylene core that is highly water resistant. The unique core design makes it light, but very rigid which is important for high wind resistance.

E46 M3 Front Splitter
Quick-Release Adjustable Front Splitter Brackets Install DIY

Extended-Length Design

Get smooth airflow with our extended-length design and increase downforce with faster moving air below the chassis.

Weighs Less Than 10 lbs

The Alumalite material core is made with a corrugated plastic with 2 thin aluminum sheet sandwiching the core. If you're trying to reduce weight, this is a better option than wood, ABS plastic or Alupoly.

E46 M3 Front Splitter
E46 M3 Front Splitter

U-Channel Kit (Add-On)

Our splitter is designed to work in conjunction with our Quick-Release Adjustable Front Splitter Brackets. The splitter extends all the way back to the front brace plate making a seamless connection for smoother and faster airflow underneath the chassis.

Splitter Guard (Add-On)

For those that want an extra layer of protection from road debris, our plastic splitter guard is a great add-on. It also improves the aesthetics of the lip.

E46 M3 Front Splitter

Splitter Brace (Optional)

It is highly recommended to reinforce the front splitter with a Splitter Brace. This provides maximum frontal support of the splitter over hang without having to use splitter rods.

Splitter Brackets (Optional)

100% compatible with our splitter brackets.

❗ Additional reinforcements for the Race Splitter, such as front splitter rods, are recommended to ensure stability during high-speeds. It is also critical to set the angle-of-attack (AOA) of the Race Splitter to eliminate excessive downwards angle at high-speeds. We recommend slightly positive (facing upwards) AOA from neutral 0 degrees.

Parts List

Part No.Part NameQuantity
1Race Splitter1
2U-Channel (optional)1
3M6 12mm Hex Head Screw (included with U-Channel)3
4M6 12mm OD Washer (included with U-Channel)3
5M6 Nylon-Insert Locknut (included with U-Channel)3
6Splitter Guard (optional)1

Vehicle Fitment

BMWE46323CiM52 2.5L
BMWE46323iM52 2.5L
BMWE46325CiM54 2.5L
BMWE46325iM54 2.5L
BMWE46325xiM54 2.5L
BMWE46328CiM52 2.8L
BMWE46328iM52 2.8L
BMWE46330CiM54 3.0L
BMWE46330iM54 3.0L
BMWE46330xiM54 3.0L
BMWE46M3S54 3.2L
Additional information
Weight 9 lbs
Dimensions 66.5 × 0.25 × 33 in





E46 (1999-2005)






3 Series




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