KYOSTAR 89mm Valved Catback Exhaust System w/ Bracket for 2021+ BMW G80 M3 G82 G83 M4 2022+ G81 M3 S58 3.0T

Ships from U.S. Warehouse

$1,549.00

KYOSTAR 89mm Valved Catback Exhaust System w/ Bracket for 2021+ BMW G80 M3 G82 G83 M4 2022+ G81 M3 S58 3.0T

$1,549.00

KYOSTAR 89mm Valved Catback Exhaust System w/ Bracket for BMW S58 3.0T

The KYOSTAR 89mm Valved Catback Exhaust System is engineered specifically for BMW S58-powered M models, featuring oversized 89mm mandrel-bent tubing to maximize exhaust flow and reduce backpressure. The integrated electronic valve system allows you to switch effortlessly between a refined daily driving sound and an aggressive performance exhaust note whenever desired.

Constructed from premium T304 stainless steel with precision TIG welding, this catback exhaust system is designed for exceptional durability, corrosion resistance, and long-term performance. The included mounting brackets ensure secure installation while the optimized exhaust routing improves scavenging efficiency, throttle response, and overall exhaust performance without compromising factory fitment.

Features

Flow Advantage: Oversized 89mm mandrel-bent tubing maximizes exhaust flow and helps reduce backpressure for improved performance.
Sound Control Advantage: Electronic valve control system provides adjustable exhaust sound for both daily driving and performance applications.
Material Advantage: Premium T304 stainless steel construction delivers excellent durability and corrosion resistance.
Construction Advantage: TIG-welded construction ensures reliable performance under high-temperature exhaust conditions.
Performance Advantage: Optimized exhaust routing improves exhaust pulse scavenging, throttle response, and overall driving experience.

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 BMW G80 M3, G81 M3 Touring, G82 M4, and G83 M4 models equipped with the S58 3.0L Twin-Turbo Inline-6 engine.

Incompatible Vehicle: Not compatible with S55, B58, N55, or other BMW engine platforms.

Verify Vehicle: Please verify your vehicle year, chassis code, exhaust configuration, and electronic valve connections before ordering.

Valve Compatibility: Designed for vehicles utilizing the factory electronic exhaust valve system.

Fitment may vary depending on production date, regional emissions specifications, and previous exhaust modifications. Please compare your factory exhaust layout, mounting brackets, and valve connectors before installation to ensure proper compatibility.

Professional Installation: Proper alignment of the exhaust system, brackets, and valve actuators is essential to achieve leak-free installation and optimal exhaust performance.

Product Details

Brand	KYOSTAR
SKU	NA-CB-5042-SS-WG
Product Type	Valved Catback Exhaust System
Vehicle Fitment	2021+ BMW G80 M3 / 2022+ G81 M3 Touring / 2021+ G82 G83 M4
Engine	S58 3.0L Twin-Turbo Inline-6
Chassis	G80 / G81 / G82 / G83
Pipe Diameter	89mm
Material	T304 Stainless Steel
Finish	Brushed Stainless Steel
Exhaust Type	Valved Catback Exhaust System
Valve Type	Electronic Valve Control
Configuration	4-Tip with Mounting Brackets
Pipe Design	Mandrel Bent Tubing
Benefits	Higher Exhaust Flow, Reduced Backpressure, Improved Exhaust Pulse Scavenging, Faster Throttle Response, Adjustable Exhaust Tone
Application	Street & Track Performance
Package Includes	1 × 89mm Valved Catback Exhaust System, Mounting Brackets, Electronic Valves, Clamps & Hardware (As Shown)
Condition	Brand New

FAQ

Q1: Will this fit my vehicle?

This 89mm valved catback exhaust system is 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 and factory exhaust configuration before purchase.

Q2: Does installation require modification?

The KYOSTAR 89mm Valved Catback Exhaust System is designed for direct installation using compatible factory-style mounting locations and electronic valve connections. Professional installation is recommended for proper alignment and sealing.

Q3: Can I adjust the exhaust sound?

The integrated electronic valve system allows adjustable exhaust characteristics, providing a more refined tone during normal driving and a more aggressive sound during performance driving.

Q4: What performance benefits does this provide?

The KYOSTAR 89mm Valved Catback Exhaust System improves exhaust flow efficiency, reduces restriction, enhances exhaust pulse scavenging, and provides adjustable exhaust sound for BMW S58 3.0T performance applications.

Professional installation is recommended.

KYOSTAR products are quality inspected before shipment. Please contact our support team for installation assistance or after-sales support.

Warranty & Shipping

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