aFe Twisted Steel HDR X-Pipe SS-304 01-06 BMW M3 3.2L S54

Upgrade your Z4 M Coupe exhaust with the Twisted Steel 2 ½" race pipe. Mandrel bent from 304 stainless steel tubing for maximum exhaust flow and corrosion resistance, the mitered merge "X" pipe eliminates drone and maximize scavenging. This system delivers gains of up to +13 horsepower and +20 lbs. x ft. of torque when tested with PN 49-36339 exhaust and are 100% hand TIG-welded for strength and durability. Includes high quality gaskets and is a direct bolt-on system for a secure, leak-free installation. In house dyno testing produced gains of up to +13 horsepower and +20 lbs. x ft. torque (tested with 49-36339 exhaust). 2-1/2", mandrel-bent, 304 s tainless steel tubing for maximum performance, corrosion resistance, strength, and durability. A mitered merge "X" pipe is used to balance and evenly distribute exhaust pulses traveling through the exhaust system, minimizing exhaust drone and maximizing scavenging. 100% TIG-welded by certified craft smen for race proven strength and durability. TIG-welding provides the strongest welds. Twisted Steel 2-1/2 IN 304 Stainless Steel X-Pipe BMW M3 (E46) 01-06 L6-3.2L S54

• Integrated X Pipe
• Quality Gaskets
• 100% MIG Welded

Upgrade the exhaust system on your 2001-2006 BMW M3 with the aFe Twisted Steel HDR X-Pipe, part number 48-36324. Designed for the E46 M3 with the 3.2L S54 inline-six engine, this race pipe improves exhaust flow while providing the strength and corrosion resistance required for demanding street, track, and performance applications. The mandrel-bent 304 stainless steel construction helps maintain smooth internal airflow and resists distortion, cracking, and corrosion over time.
The integrated mitered-merge X-pipe balances exhaust pulses between the cylinder banks, helping maximize scavenging and reduce unwanted exhaust drone. In-house dyno testing produced gains of up to 13 horsepower and 20 lb.-ft. of torque when tested with the aFe 49-36339 exhaust system. Actual results may vary based on the vehicle, supporting modifications, fuel, calibration, and overall exhaust configuration. The precision TIG-welded construction provides strong, durable joints designed to withstand elevated exhaust temperatures and repeated thermal cycling.
The aFe Twisted Steel HDR X-Pipe is engineered as a direct bolt-on replacement for a straightforward installation with compatible components. Quality gaskets are included to help create a secure, leak-resistant connection at the exhaust joints. This system fits 2001, 2002, 2003, 2004, 2005, and 2006 BMW M3 models equipped with the 3.2L S54 engine. It is intended for off-road and racing use and is not approved for use on pollution-controlled vehicles where emissions compliance is required. Professional installation is recommended to verify fitment, hardware condition, and proper exhaust alignment before operation.

Features:

• Integrated X Pipe: Mitered-merge design balances exhaust pulses, improves scavenging, and helps reduce exhaust drone.

• 304 Stainless Steel Construction: Mandrel-bent tubing provides smooth airflow, corrosion resistance, and long-term durability.

• Performance Gains: Dyno testing showed gains of up to 13 horsepower and 20 lb.-ft. of torque with the compatible aFe 49-36339 exhaust.

• Precision TIG-Welded: Certified hand-welded construction delivers strong joints for demanding performance applications.

• Quality Gaskets Included: Supplied gaskets help support a secure, leak-resistant installation.

• Direct Bolt-On Design: Engineered for compatible 2001-2006 BMW M3 models with the 3.2L S54 engine.

Fitment:
BMW M3 Base 2001
BMW M3 Base 2002
BMW M3 Base 2003
BMW M3 Base 2004
BMW M3 Base 2005
BMW M3 Base 2006