What is the difference between the Racing and 200-cell versions?

The Racing version is catless and flows the most, giving the biggest sound and spool gain. The 200-cell Hi-Flow Catted version keeps a catalyst for reduced emissions with most of the performance benefit.

Will these fit my F80 M3 without modification?

They are listed as a direct bolt-on for the S55 engine, with no cutting or permanent changes. Installation hardware is included.

Do I need a tune after fitting catless downpipes?

A tune is strongly recommended. Without one, the car may throw a check engine light and may not use the extra flow fully.

Are these legal for street use?

The Racing catless version is intended for track and off-road use and is not emissions compliant on public roads. The 200-cell catted version is the closer-to-stock option.

One set of downpipes, left and right, plus the necessary installation hardware.

How much louder will the car be?

Expect a deeper, more aggressive tone and more volume under load, with some added drone at steady cruising.

Where is the S55 Racing Downpipes cheapest?

At EOS Exhaust, for $199.99, 66% under what the other stores charge, as of our latest check.

Where can I buy the S55 Racing Downpipes?

10 stores we checked sell it, including EOS Exhaust, S5X Performance, VRSF, Colorado N5X, TopGearSolutions.com.

S55 Racing Downpipes Price History: $199.99 at EOS Exhaust

From Bimmer Plug

Two versions: Racing Catless for unrestricted flow, or 200-Cell Hi-Flow Catted for reduced emissions with strong performance
Premium stainless steel construction, corrosion-resistant and heat-tolerant
Precision TIG welding for strength under extreme conditions
Performance gains: increased horsepower, torque and improved turbo spool
Direct bolt-on fitment, no cutting or permanent modifications required
Reduces turbo backpressure and improves throttle response with a deeper, more aggressive exhaust tone

Materials: High-grade stainless steel
Fit: Direct bolt-on fitment; fits 2015–2018 BMW F80 M3 Sedan, 2015–2020 BMW F82/F83 M4 Coupe & Convertible, 2019–2021 BMW F87 M2 Competition
Guarantee: Most products come with a 90-day limited warranty against manufacturing defects; some premium items offer extended warranties.
Returns: Hassle-free returns within 30 days of delivery; if the part doesn't fit due to an error on the store's end, return shipping is covered.
Shipping: Most orders ship from the Irvine, CA warehouse within 1–3 business days; domestic delivery typically takes 3–7 business days; international times vary; made-to-
In the box: 1 Set of S55 Downpipes (Left and Right), Necessary installation hardware

About the S55 Racing Downpipes

These downpipes are made for the BMW S55 engine. They reduce turbo backpressure and improve throttle response, and they give the exhaust a deeper, more aggressive tone. The material lists gains in horsepower and torque and quicker turbo spool.

The downpipes are made of high-grade stainless steel that resists corrosion and tolerates heat. Precision TIG welding gives them strength under extreme conditions.

They bolt directly onto the vehicle. No cutting or permanent modifications are required.

Material: High-grade stainless steel
Construction: Precision TIG welded
Installation: Direct bolt-on, no cutting or permanent modifications
Engine: BMW S55
Compatibility: 2015–2018 BMW F80 M3 Sedan; 2015–2020 BMW F82/F83 M4 Coupe and Convertible; 2019–2021 BMW F87 M2 Competition
In the box: 1 set of S55 downpipes (left and right), necessary installation hardware

Specifications

Downpipe Options: Racing Downpipes
Model: F80 M3

S55 Racing Downpipes

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S55 Racing Downpipes

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