2025 M-Tech Performance B58 Downpipe – Catless, 304 Stainless Steel

Unlock your BMW true performance potential with the all-new 2025 M-Tech Performance B58 Downpipe. Precision-engineered from premium 304 stainless steel, this catless downpipe is designed to deliver maximum exhaust flow, improved turbo response, and a noticeably aggressive exhaust note. Enjoy proven gains in horsepower, torque, and throttle response whether you’re carving up back roads or chasing personal bests at the track.

• Direct fit for B58-powered BMW (see compatibility below)
• Made from high-grade 304 stainless steel for durability and corrosion resistance
• Catless design for maximum power and enhanced turbo sound
• Precision TIG welding for long-term reliability
• Improved throttle response and reduced turbo lag
• Designed, tested, and supported by enthusiasts

Compatible Models:
2025–Present BMW M340i (G20/G21) M440i

Specifications:
Engine: BMW B58 Turbocharged I6
Material: 304 Stainless Steel
Configuration: Catless (for off-road or racing use only)
Part #: MT-DP-B58-2025

Upgrade your BMW with a proven, high-quality downpipe that delivers real results. Increase power, sharpen your driving experience, and let your B58 engine sing. (Picture used for reference - 2025 DP is NON-Catted)