KYOSTAR One-Piece Catless Downpipes for 2021+ BMW G80 M3 G82 G83 M4 2022+ G81 M3 S58 3.0T

KYOSTAR One-Piece Catless Downpipes for BMW G80 G81 M3 & G82 G83 M4 S58 3.0T 

The KYOSTAR One-Piece Catless Downpipes are designed for BMW G80/G81 M3 and G82/G83 M4 models equipped with the S58 3.0T Twin-Turbo Inline-6 engine. These high-flow downpipes replace the restrictive factory catalytic converter sections to reduce exhaust restriction, improve exhaust flow efficiency, enhance turbo response, and deliver a more aggressive performance exhaust tone.

Featuring a one-piece construction design, these downpipes provide a direct and streamlined exhaust path from the factory twin-turbo system. Manufactured for performance-oriented S58 applications, they are ideal for tuned street vehicles, track builds, and upgraded turbo setups requiring increased exhaust flow capacity and reduced backpressure.

Features

• One-Piece Catless Design: Provides a simplified exhaust path with reduced restriction compared with the factory catalytic converter system.

• Improved Exhaust Flow: Helps increase exhaust flow efficiency and support higher-performance S58 turbo applications.

• Enhanced Turbo Response: Reduced exhaust restriction helps improve turbocharger response and overall engine performance.

• Aggressive Exhaust Tone: Delivers a deeper and more performance-oriented exhaust sound compared with the factory system.

• S58 Performance Upgrade: Designed specifically for BMW G-Series M vehicles using the S58 3.0T Twin-Turbo engine platform.

Fitment

• 2021+ BMW G80 M3 S58 3.0T

• 2021+ BMW G80 M3 Competition S58 3.0T

• 2021+ BMW G80 M3 Competition xDrive S58 3.0T

• 2022+ BMW G81 M3 Touring Competition xDrive S58 3.0T

• 2021+ BMW G82 M4 Coupe S58 3.0T

• 2021+ BMW G82 M4 Competition S58 3.0T

• 2021+ BMW G82 M4 Competition xDrive S58 3.0T

• 2021+ BMW G83 M4 Convertible S58 3.0T

• 2021+ BMW G83 M4 Competition xDrive S58 3.0T

Notes

Compatible Vehicle: Designed for selected BMW G80/G81 M3 and G82/G83 M4 models equipped with the S58 3.0L Twin-Turbo Inline-6 engine only.

Incompatible Vehicle: Not compatible with B58, S55, N55, B48, diesel, hybrid, naturally aspirated, or other engine platforms.

Verify Vehicle: Please verify your vehicle year, chassis code, engine code, factory downpipe configuration, flange design, oxygen sensor locations, and exhaust connections before ordering.

Exhaust Configuration: Designed for BMW S58 factory-style exhaust layouts and compatible performance exhaust systems.

Exhaust layouts, sensor positions, flange designs, mounting points, and factory emissions equipment may vary by production date, model, market, and previous modifications. Please compare your original downpipes and all connection points with the product photos before installation.

Emissions Notice: These catless downpipes remove the factory catalytic converters and may trigger a check-engine light without compatible ECU software. They are intended for off-road, competition, or racing applications only and may not comply with public road emissions regulations.

ECU Tune Reminder: Compatible ECU tuning or calibration is strongly recommended after installation to properly manage oxygen sensor readings and optimize engine performance.

Professional Installation: Additional gaskets, seals, clamps, mounting hardware, heat shielding, or minor adjustment may be required depending on vehicle configuration, exhaust system, and previous modifications.

Product Details

FAQ

Q1: Will this fit my vehicle?

These KYOSTAR One-Piece Catless Downpipes are designed for BMW G80 M3, G81 M3 Touring, G82 M4, and G83 M4 models equipped with the S58 3.0L Twin-Turbo Inline-6 engine. Please confirm your chassis, production year, and factory exhaust configuration before purchase.

Q2: Does installation require modification?

The one-piece catless downpipes are designed for compatible BMW S58 exhaust configurations. Installation requirements may vary depending on vehicle setup, aftermarket modifications, and exhaust configuration. Professional installation is recommended.

Q3: Will ECU tuning be required?

Because these are catless downpipes, oxygen sensor-related warnings may occur after installation. ECU tuning or calibration is recommended to properly manage engine parameters and optimize performance.

Warranty & Shipping

KYOSTAR products are inspected before shipment to ensure quality and reliability. Each exhaust component is securely packaged to prevent transportation damage. Please contact our support team if you need assistance with installation or product-related issues.