BMW F80 M3 F82 M4 | 2.5" Piping w/ 3.5 " Quad Tips Axle Back Exhaust 2015-2020

Upgrade the sound and rear-end appearance of your BMW F80 M3 or F82/F83 M4 with this axle back exhaust system, designed to replace the rear section of the factory exhaust for a sportier tone and more aggressive look.

Made for 2014-2019 BMW M3 and M4 models, this axle back setup features 2.5 inch piping with 3.5 inch quad tips to enhance the vehicle’s performance-inspired styling while maintaining a clean, direct-fit layout.

An axle back exhaust upgrade is ideal for drivers who want improved exhaust sound quality, reduced rear-section weight, and a more refined performance appearance without replacing the entire exhaust system.

Product Specifications

Key Features

• Designed for BMW F80 M3 and F82/F83 M4 models
• Axle back exhaust design replaces the rear section behind the rear axle
• 2.5 inch piping for a sportier exhaust setup
• 3.5 inch quad tips enhance the rear-end appearance
• Improves exhaust sound quality with a more aggressive tone
• Adds a sportier rear profile compared to the factory exhaust
• Ideal upgrade for street and enthusiast builds

Configuration Options

• Single axle back exhaust system with 2.5 inch piping and 3.5 inch quad tips

Package Includes

• Axle back exhaust system
• 3.5 inch quad exhaust tips

Note: Does not fit other aftermarket exhaust systems. Professional installation is highly recommended to ensure proper alignment, secure fitment, and best exhaust system performance.

Installation

• Installs behind the rear axle as an axle back exhaust replacement
• Designed to connect with compatible factory exhaust components
• Test fitting and alignment are recommended before final tightening
• Professional installation is highly recommended

Fitment

• 2014-2018 BMW M3 F80 Sedan
• 2014-2019 BMW M4 F82 Coupe
• 2014-2019 BMW M4 F83 Convertible

United States: Free shipping available to the lower 48 states across all items. Other states will incur a shipping charge.

Worldwide: Free shipping is available for Complete Headlights, Taillights, DRLs. For custom headlight retrofits, carbon fiber products, and performance products, there will be a shipping charge.  

Please note:
• For Retrofits, you are purchasing a headlight modification service.
• If you select "Shipping own headlights to BayOptiks for modification", you are required to send us your headlights.
• If you choose "Purchase new OEM headlights", we will order and modify a new OEM headlight for you.
• Once your customizations are complete, we will ship it to you!

• Complete Headlights: 3-5 business days for order processing plus shipping time.
• Custom & Pre-Built Headlights: 6-8 weeks depending on the complexity and component availability.
• New OEM and cores: 6-8 weeks plus an additional 4-8 weeks as these are special orders base on the vehicle VIN due to different versions (North American, European, etc.)
• DRLs, Taillights, Brake Pads, and Carbon Fiber Aero: 3-5 business days for order processing, plus shipping time.
• Lens Replacements: 1-3 weeks plus shipping time.

Please note, we do not have control over the time frames of our vendors, manufacturers, and delivery services as they may delay processes in regards to components and shipment.