Here are the install DIY for our Quick-Release Adjustable Front Splitter Brackets and Front Race Splitter. You’re going to need to jack up the car and remove your bumper to do this install. The removal of the bumper support beam is also required. Models dating up to 2003 have the aluminum carrier and 2003.5 and up have the kevlar so make sure you check to see which one you have. This install will take about 1-2 hours. Everything is bolt-on and you just need basic tools. To get an idea of the bracket and splitter installation, first watch the quick-release demonstration video below.

⚠️ It is required to trim the front bumper in order to make clearance for the splitter brackets. Trimming will not be visible on the outside.

Tools required

  • 13mm socket
  • 10mm socket and wrench
  • 8mm wrench
  • 1/4″ drill bit and drill
  • 5/32 allen key
  • Marker

E46 M3 Quick Release Front Splitter Bracket

Quick-Release Adjustable Front Splitter Brackets Parts list

Part No. Part Name Quantity
1 Steel Bumper Bracket 2
2 Steel Adjustment Bracket 2
3 Aluminum Feet 2
4 M6 20mm Serrated-Flange Hex Head Screws 4
5 Curved Washers 4
6 M6 16mm Serrated-Flange Hex Head Screws 8
7 M6 Nylon-Insert Flange Locknut 16
8 M6 18mm OD Washer 12
9 M6 18mm Hex Drive Flat Head Screw 4
10 3/8″ 1.5″ OD Washer 4

Race Splitter Parts List

1 Race Splitter 1
2 U-Channel (optional) 1
3 M6 12mm Hex Head Screw (included with U-Channel) 3
4 M6 12mm OD Washer (included with U-Channel) 3
5 M6 Nylon-Insert Locknut (included with U-Channel) 3
6 Splitter Guard (optional) 1

Splitter bracket install directions

1. Remove front bumper.

2. Remove aluminum or kevlar carrier from bumper with 13mm socket.

3. Remove front undertray.

4. Install U-Channel with parts #9, 10, 11, 12. You will install using the existing 3 OEM front brace holes that connected to the under tray.

Quick-Release Adjustable Front Splitter Brackets Install DIY

Quick-Release Adjustable Front Splitter Brackets Install DIY

5. Install part #1 on each side.

Quick-Release Adjustable Front Splitter Brackets Install DIY

6. Install part #2 on each side using hardware #4, 5, 6. Don’t tighten hard just yet.

Quick-Release Adjustable Front Splitter Brackets Install DIY

7. Install aluminum feet part #3 with hardware #4, 5, 6. Don’t tighten hard just yet.

Quick-Release Adjustable Front Splitter Brackets Install DIY

8. Measure up the 3 OEM brace holes and clip the tail end of the splitter. Since the flat end is being pushed into the U-Channel, the splitter needs to be cut to sit flush on the channel.

Quick-Release Adjustable Front Splitter Brackets Install DIY

9. Reinstall the bumper carrier and install 13mm OEM nuts.

Quick-Release Adjustable Front Splitter Brackets Install DIY

10. Slide the splitter into the C-Channel. Double check to make sure the splitter sits flush wand back against the C-Channel.

Quick-Release Adjustable Front Splitter Brackets Install DIY

11. Align the splitter in the middle and hold pressure against the back of the C-Channel. Carefully raise the splitter up against the aluminum feet and mark the drill locations using a marker.

Quick-Release Adjustable Front Splitter Brackets Install DIY

12. Use hardware #7 and 8 to install splitter onto feet.

Quick-Release Adjustable Front Splitter Brackets Install DIY

13. Check the top and bottom of the splitter to see if seating is still in proper position all the way against the back of the C-Channel. Tighten down the feet to the splitter.

Quick-Release Adjustable Front Splitter Brackets Install DIYQuick-Release Adjustable Front Splitter Brackets Install DIY

14. Set your desired height and tighten everything down. Install your bumper back on.

Quick-Release Adjustable Front Splitter Brackets Install DIY

PRO TIP: Since I have my radiator shrouds removed, I can disconnect the splitters from the engine bay, top down. This makes it a super easy and fast removal whenever I need to get on the trailer or doing an oil change.

Quick-Release Adjustable Front Splitter Brackets Install DIY

Additional reinforcement for the Race Splitter is recommended to ensure stability during high-speeds. It is also critical to set the angle-of-attack (AOA) of the Race Splitter so there is not excessive downwards angle at high-speeds. We recommend slightly positive (facing upwards) AOA from neutral 0 degrees.