BMW Widebody Kits

ECS Exclusive Proudly Offered at Turner Motorsport!

Add-on diffuser to deliver a true motorsport look to your M3. Fastened seamlessly to the bottom of the rear bumper giving a platform to show off your exhaust and complete the rear end of the E46.

The E46 M3 is an amazing looking car right out of the box but a common BMW issue is the height of the front vs rear bumpers. As far back as the E30, the front bumper is much lower than the rear bumper and the E46 M3 faces the same issue. With this problem the front bumper is always super low to the ground and the rear bumper looks in-complete. The ECS add-on diffuser is a unique option for balancing out the rear bumper with the height of the front bumper for a full and complete look.

Give your M3 that wild style that stands out from the crowd, and obtain a nice balanced look. This is just the start of a new line of Street Flow Diffusers diffusers that are a must have extension of your awesome ride. The diffusers come powder coated in a sleek satin-black finish, are a blast to install and fit seamlessly against the rear bumper for a professional looking install every time. The Street Flow diffuser attaches below your factory rear diffuser and exhaust of your choosing to fill out the rear end for a nice full and aggressive styling profile.

Lets take a trip together down a new and unique path. Over the years ECS has designed factory replacement ABS and Carbon Fiber diffusers for all different models of BMW's. For the factory replacements ECS focus was to take the oem characteristics and add a twist and really bring out a more aggressive look with a direct replacement diffuser. For their new line of diffusers, us as car enthusiasts wanted to design a set of diffusers that really pushed the envelope and stepped outside of our comfort zone. Our new line of add-on diffusers is a result of our engineering team and fellow enthusiasts spending time study the M3 chassis, modeling different designs, testing prototypes and making changes to get a final product that we are extremely excited to offer. The E46 M3 Street Flow Diffuser is the first in our line of new diffusers. Stay tuned for the E36 M3 and the E92 M3 diffusers next!

Features:

Adds an aggressive aesthetic in addition to the subtle factory rear diffuser
Lightweight and durable 10ga aluminum in satin black powder coat to blend with the factory trim color
Installation is secure and simple with ample adjustability built in for perfect fitment
Design:

10 ga 5052 aluminum construction
Black satin powder coat for long term corrosion resistance
5 piece design to simplify installation
Slotted mounting locations to allow for mounting adjustment
Laser cut ECS logo pre powder coat for a smooth finish
Hidden hardware for better aesthetic

Unlock Aggressive Style with Turner Motorsport's E36 M3 Street Flow Rear Diffuser Kit & ABS Front Lip!

Achieve an aggressive, cohesive design that enhances your M3's exterior appeal from front to back.

E36 M3 Street Flow Rear Diffuser

The E36 M3 has always been a head-turner, but the rear bumper often lacks the levelled look of the front. With BMW's signature design featuring a lower front bumper compared to the rear—an aesthetic seen across generations—this diffuser brings balance by matching the rear bumper’s height to the front, giving your lowered E36 M3 a sleek, grounded look.

Designed to add a bold edge to your M3, the Street Flow Diffuser is our latest innovation in aggressive styling, specially crafted to bridge the gap between factory lines and custom flair. Each piece is precision-engineered and powder-coated in satin black to perfectly complement the M3's factory trim. Easy to install, the diffuser seamlessly mounts to the rear bumper, ensuring a flawless fit and professional look.

The Street Flow Diffuser is a new venture for Turner Motorsport, diverging from our line of factory-replacement ABS and Carbon Fiber diffusers to deliver a design that pushes the boundaries. After extensive modeling and prototyping, we’re thrilled to debut this product, with more designs in the pipeline. Get ready to take your E36 M3 down a unique path in styling evolution.

Key Features:

Bold Appearance: Complements the OEM rear diffuser with an added aggressive look. Durable Construction: Made from lightweight 10-gauge aluminum, finished with a satin black powder coat for superior durability. Effortless Install: Adjustable slots and hidden color-matched hardware for a streamlined setup. Specifications:

Material: 10-gauge 5052 aluminum with black satin powder coat Design: 5-piece layout for easier installation and maximum fitment adjustment Extra Detail: Includes laser-cut ECS logo and concealed mounting hardware Turner Motorsport ABS Front Lip - Matte Black

An essential upgrade, this ABS Front Lip brings both visual impact and aerodynamic benefits to your M3. The front lip adds downforce for enhanced handling while maintaining a durable build to withstand daily driving conditions, including road debris and uneven surfaces.

Inspired by the E36 LTW design, Turner Motorsport’s ABS Front Lip is a cost-effective alternative to fragile carbon fiber lips. Made from UV-stabilized ABS plastic, this two-piece design resists cracking and shattering, offering a matte black finish that complements the original E36 aesthetic. For added versatility, this lip can be prepped and painted to suit your style preferences.

Features & Specifications:

Inspired Design: E36 LTW-inspired look in a robust ABS form Enhanced Durability: UV-resistant construction for long-lasting performance Precision Fit: Engineered using 3D laser scanning for optimal fitment Easy Install: Uses factory screws and includes pre-applied 3M adhesive for extra security Upgrade your E36 M3’s style with Turner Motorsport’s rear diffuser and front lip combo, adding aggressive lines that turn heads on the street and track alike!

E92 M3 Street Flow Rear Diffuser While the E92 M3 is a stunning car from the factory, the rear bumper often lacks the visual weight to match the front—especially on lowered cars. The ECS Street Flow Rear Diffuser is engineered to correct that imbalance, adding a sharp, race-ready look that enhances your M3’s profile from all angles. This add-on diffuser is custom-tailored for the E92 M3 and seamlessly complements the OEM styling with a level, ground-hugging aesthetic. With an optional center fin, you can personalize the look further, dialing up the intensity to match your vision.

Why You’ll Love It:

Bold, Aggressive Style: Enhances your car’s rear stance, filling out the bumper for a balanced, race-inspired look. Satin Black Powder Coat Finish: This durable finish integrates perfectly with OEM trim for a factory-finished appearance. Simple, Secure Installation: Our diffuser bolts on easily, providing a snug fit with hidden, color-matched hardware for a clean look. ECS Original Design: Years of engineering experience and enthusiast feedback led to a unique, uncompromising design that perfectly complements the M3. Premium Design & Materials:

Robust 10-Gauge Aluminum: Built from durable 5052 aluminum with precision laser cuts for a flawless fit and lasting durability. 5-Piece Construction: Streamlined assembly makes installation straightforward. Adjustable Fit: Slotted mounting points allow for exact positioning and alignment. Unique ECS Touches: ECS logo cutout and color-matched hardware for sleek, subtle branding.

Carbon Fiber Rear Spoiler – E92 M3 With a lightweight, eye-catching carbon weave, this spoiler gives your BMW that premium, performance-oriented finish with minimal weight addition. Installation is simple and secure with double-sided adhesive for a reliable, long-lasting hold.

Spoiler Highlights:

Direct Fit for E92 M3: Perfectly contoured to the E92 M3’s rear profile for a sleek, custom fit. No Paint Required: High-grade carbon fiber finish complements any paint color, providing that signature performance style right out of the box. Don’t miss out on this unique chance to elevate your M3’s appearance with a complete, cohesive styling package. Get your ECS Street Flow Diffuser and enjoy the added touch of a carbon fiber rear spoiler—an all-in-one exclusive offer designed to make your E92 M3 truly stand out.