BMW Exhaust Center Sections

Upgrading the center section of your exhaust often removes some restrictions, mainly catalytic converters, giving your vehicle both more power and more sound. We offer several different exhaust brands to get your vehicle sounding exactly the way you want it to!

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Section 1 Rasp Terminator With Crossover - E46 M3

T#:599413

Part#: 1004539

Ships on Sep 29, 2026

$ 590.00 USD

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$ 590.00 USD

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Rasp Terminator for the E46 M3 (also for MZ3 and Z4M) is a tuned front section that: Greatly reduce rasp from the S54 engine Balance exhaust pressure for each bank with H-pipe crossover The S54 rasp is excessive and tuning it out requires the right combination of resonators, placement, and tubing size. CPI designed their own section 1 after other designs on the market fell short. Rasp is reduced by approximately 80% on a M3 equipped with aftermarket headers. The latest RTX incorporates an H-pipe crossover that equalizes exhaust pressures in both banks before they merge for section 2. This reduces turbulence and improves exhaust flow. While not designed to gain power and torque, dyno testing showed slight gains with this system. Fitment has also been improved for better ground clearance. Tubing is a full 2.36" (60mm) and 304 stainless steel throughout. It will bolt on to most headers and to any section 2 that uses the factory-style flanges.

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MACH Force-Xp X-Pipe 2-1/2 IN 304 Stainless Steel W/ Cat & Resonator ...

T#:35121171

Part#: 49-36321-1

Ships in 3 Business Days

Sale - Save 5% $ 2,238.00

This product was last offered at the strikethrough price on
09-01-2026

$ 2,126.10 USD

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Qty

Sale - Save 5%

$ 2,238.00

This product was last offered at the strikethrough price on
09-01-2026

$ 2,126.10 USD

Add to Wish List

**2-1/2 Inch 304 Stainless Steel Construction:** Built from 2-1/2 inch 304 stainless steel tubing, this system provides exceptional strength and long-lasting durability. **Dual High-Flow Catalytic Converters:** Equipped with dual high-flow catalytic converters that reduce restriction compared to factory units, enhancing airflow. **Heavy-Duty Flanges:** Laser-cut, factory-style flanges ensure a secure, leak-free seal. **Effortless Installation:** With factory-style flanges, this system installs easily in stock locations without the need for cutting or modifications, making installation quick and hassle-free. **TIG-Welded:** 100% TIG-welded for outstanding strength and reliability in demanding environments.

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