B58，BMW G20 Archives - AHRESRACING | Performance Racing Parts & Turbo Solutions https://ahresracing.com/product-tag/b58，bmw-g20/ Tue, 14 Apr 2026 03:00:16 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://ahresracing.com/wp-content/uploads/2024/04/logo-1-100x100.jpg B58，BMW G20 Archives - AHRESRACING | Performance Racing Parts & Turbo Solutions https://ahresracing.com/product-tag/b58，bmw-g20/ 32 32 B58 Downpipe for BMW G20 G22 M340i M440i https://ahresracing.com/product/b58-downpipe-for-bmw-g20-g22-m340i-m440i/ Mon, 12 Jan 2026 06:00:30 +0000 https://ahresracing.com/?post_type=product&p=3031 High performance B58 downpipe engineered for BMW X3 M40i (G01) and X4 M40i (G02) with B58 3.0L engine. T304 stainless steel, high flow design, direct bolt-on.

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]]> Technical Specifications

  • Application: BMW X3 M40i (G01) & BMW X4 M40i (G02)

  • Engine: B58 3.0L Turbocharged Inline-Six

  • Core Diameter: 4.5 Inches (114mm)

  • Catalyst Option: 200-Cell High-Flow Metallic Catalyst (GESI-type) | Catless Version Available

  • Material: T304 Austenitic Stainless Steel

  • Flanges: Precision CNC-cut, utilizes factory-style V-band connections where applicable

  • Finish: Polished or brushed (as per configuration)

  • O2 Sensor Ports: Includes pre-and post-cat bungs for factory oxygen sensors (plug included for post-cat if tuning out CEL).

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