G8X S58 3.5” Race Downpipes

The factory downpipes on the S58 platform are designed for emissions compliance and significantly restrict exhaust flow. These race downpipes reduce backpressure, allowing exhaust gases to exit more efficiently, improving turbo response, increasing power, and producing a more aggressive exhaust tone.

With a less restrictive design, the turbos are able to spool faster and operate more efficiently, resulting in noticeable gains in performance and throttle response.

Key Features

• Direct OEM fitment

• High-flow race design for maximum performance

• Significant reduction in exhaust restriction

• Improved turbo response and power output

• Increased exhaust volume and aggressive tone

• Precision CNC-machined flanges

• Mandrel-bent 304 stainless steel construction

• TIG-welded for strength and durability

• Compatible with factory and aftermarket exhaust systems

Build Quality

Manufactured from 304 stainless steel with smooth transitions and precision welds to ensure optimal exhaust flow and long-term durability under high heat and boost conditions.

Fitment (If unsure, contact us to confirm)

Confirmed Fitment:

• BMW G87 M2 (2022–2026)

• BMW G80 M3 (2021–2024)

• BMW G81 M3 Touring (2021–2026)

• BMW G82 M4 (2021–2026)

• BMW G83 M4 Convertible (2021–2026)

• BMW X3M LCI (2022–2024)

• BMW X4M LCI (2022–2024)

Important Notes

• For off-road use only

• ECU tune required for optimal performance

• Check engine light will occur without proper tuning

• Professional installation recommended

• Please include your VIN in the order notes so we can confirm fitment and supply the correct product

• If installation is selected, this order will be shipped to our Burbank installation location for scheduled service

Shipping

• Estimated delivery: 4–8 business days

• Tracking provided once shipped

Warranty

• 36-month warranty covering manufacturer defects only

• Covers defects in materials or workmanship under normal use

Exclusions

• Does not cover improper installation

• Does not cover misuse, abuse, or neglect

• Does not cover normal wear and tear

• Does not cover damage caused by failing or reused components such as gaskets, clamps, or related hardware

Installation by BimmerTechsLA

• If installed by BimmerTechsLA, labor is covered under warranty for 36 months

• Labor coverage applies only to issues directly caused by a defect in the product

• Labor warranty does not cover issues caused by unrelated parts, pre-existing conditions, or customer-requested reuse of worn components

Installation & Delivery

• Installation available at BimmerTechsLA (Burbank, CA) upon request

• If installation is selected or a free-shipping/install code is used, your order will be shipped directly to our installation location

• By selecting installation or using the install code, you agree to have your product delivered to BimmerTechsLA for scheduled installation

• Orders without installation selected will be shipped to the customer’s provided address