BMW M3 F80 / M4 F82 / M2C F87 Valvetronic Catback Equal-Length Mid-Pipe Stainless Steel Exhaust System

Engineered for BMW M3 F80, M4 F82/F83, and M2 Competition F87 owners, this Valvetronic Catback Equal-Length Mid-Pipe Stainless Steel Exhaust System ships with its own electronic control box and wireless remote. Manufactured in Europe and quality-controlled by BYC Performance, it bolts directly to the OEM mid-pipe v-band on all S55-engined M3/M4/M2C trims.

The equal-length mid-pipe geometry runs two parallel pipes of identical length post-turbine — pulse synchronization delivers the cleanest high-RPM exhaust note and a marginal flow advantage. 90 mm twin exit tips are customer-selectable in Glossy Black Stainless, Polished Stainless, Matte Carbon Fiber, or Glossy Carbon Fiber.

Key Features

• Included Electronic Control Box and Remote.
• Equal-Length Mid-Pipe: Identical-length parallel pipes — pulse sync, cleanest high-RPM note.
• T304 Stainless Steel: Corrosion-resistant premium alloy.
• CNC-Bent Piping.
• Customer-Selectable 90 mm Tips.
• OEM Hanger Compatible.

Titanium vs. Stainless — This Is Stainless

• T304 Stainless Steel (this product): Durable, deeper sound, lifetime rust-resistance
• Titanium: Noticeably lighter, sharper metallic note, heat-tint, higher cost
• This product is for those who want durability and a deeper tonal character

Single, Double, Equal-Length — The Difference

Same price tier, three different characters:

• Single Mid-Pipe: Clean flow, tonal, daily-friendly.
• Double Mid-Pipe: Twin parallel paths, aggressive and full.
• Equal-Length — this product: Identical-length pipes, pulse sync, cleanest high-RPM note and a marginal performance edge.

Vehicle Fitment

This BMW S55 catback exhaust fits these S55-engined models:

• BMW M3 F80 Sedan (2014-2018) — S55
• BMW M4 F82 Coupe (2014-2020) — S55
• BMW M4 F83 Convertible (2014-2020) — S55
• BMW M3/M4 Competition Package (2016+) — S55
• BMW M4 CS F82 (2017-2018) — S55
• BMW M2 Competition F87 (2018-2021) — S55
• BMW M2 CS F87 (2020-2021) — S55

Important: The BMW M2 F87 base (N55, 2016-2018) is NOT compatible — base M2 uses a different exhaust geometry.

Technical Specifications

• Material: T304 Stainless Steel
• Configuration: Catback
• Mid-pipe: Equal-Length
• Valve Control: Electronic control box + wireless remote
• Exit Tips: 90 mm twin — 4 finishes
• Sound Character: Clean high-RPM, balanced mid-high range
• Origin: Europe

Installation Notes

1. Lift the vehicle and loosen rear bumper underbody screws.
2. Release the stock catback mid-pipe v-band clamp.
3. Replace OEM hangers if worn.
4. Mount the control box, connect valve actuator wiring.
5. Hang new catback, torque v-band to 12 Nm.
6. Confirm tips are centered in the bumper cutout.
7. Pair the remote and test.

Care and Maintenance

T304 stainless is corrosion-resistant. Wipe polished tips with a soft cloth. For carbon fiber tips, use a carbon-safe cleaner. Re-check bolt torque after first 500 km.

FAQ

How is the valve controlled?
Via the included electronic control box and wireless remote.

How loud is it?
Calm and daily-friendly with the valve closed, noticeably fuller and more aggressive with the valve open. The equal-length pipework produces a particularly clean high-RPM note.

TÜV / E-mark approved?
Catback contains no catalyst; qualifies for TÜV in most European markets.

Welded or bolt-on?
Direct bolt-on (v-band + hangers).

Does it fit the BMW M4 F83 Convertible?
Yes. F83 Convertible shares the S55 engine and is fully compatible.

Does it fit the BMW M2 F87 base (N55)?
NO. This system is designed for S55-engined models; the base M2 (N55) uses different exhaust geometry.

Does it fit BMW M3 G80 / M4 G82?
NO. G80/G82/G87 use the new S58 engine with different exhaust geometry; a separate G-series catback is required.

Shipping time?
In-stock items ship within 1-3 business days via partner couriers.

Warranty?
BYC Performance offers a 12-month manufacturer warranty.

Why BYC Performance?

BYC Performance is a Turkey-based performance tuning specialist sourcing premium parts from leading European manufacturers. Our catalog includes BMW M3 F80 catbacks, M4 F82 valvetronic systems, and many more high-quality performance components.