Valved Axle-Back Exhaust - E46 323/328

Product Details

Transform your BMW E46 323/328 with the Turner Motorsport Valved Axle-Back Exhaust, engineered for lightweight performance, adjustable sound, and aggressive styling. Our valved muffler allows you to switch instantly between a refined, quiet tone for daily driving and a loud, spirited exhaust note for track days or spirited drives. Crafted from T304 stainless steel with integrated 3.0" exhaust tips, this axle-back system improves flow, reduces backpressure, and enhances throttle response. Designed in-house for perfect E46 323/328 fitment, it delivers a bold look, modern valved control, and the iconic straight-six sound you expect from Turner Motorsport.

PART DESIGN

• Turner In-house designed and engineered using FARO ARM laser scanning technology and SolidWorks 3D CAD modeling for precision fitment.
• T304 Stainless Material in a natural finish - 1.25mm wall thickness, back purged and TIG-welded throughout
• 2"-3.0" Stainless Steel Mandrel Bent Tubing
• T304 Stainless Steel 12mm barbed exhaust hangers Tig-Welded in OE locations for precise fitment.​
• 23 lb weight reduction from factory catback
• Designed for smoother flow path and less backpressure

KIT CONTENTS

• Axleback exhaust
• 3.0" Valved muffler with integrated tips
• Sleeve clamp to adapt to your factory exhaust front section
• Optional exhaust valve controllers

PRODUCT DEVELOPMENT

Our E46 323i/328i Performance Exhausts are the result of advanced engineering, testing, and quality assurance by Turner’s Research & Development team. Every stage of development employs FARO laser scanning, SolidWorks 3D CAD modeling, and in-house rapid prototyping for precise fitment and design validation. Performance and durability are proven through Mustang AWD 500 SE dyno testing and Superflow SF-750 Flowbench analysis, ensuring each component meets Turner’s uncompromising standards for performance and quality.

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