Gen 3 B58 Catless Downpipe – BMW M340i M440i G20 G22

Unlock the full performance potential of your Gen 3 B58-powered BMW M340i or M440i with the 5" Stainless Steel Catless Downpipe. Engineered for maximum exhaust flow, sharper throttle response, and an aggressive exhaust note, this TIG-welded downpipe is the perfect upgrade for enthusiasts seeking serious gains.

Key Features:

Performance Gains:
➤ Faster turbo spool and improved throttle response
➤ Increased horsepower and torque
➤ Aggressive, deep exhaust tone

Material:
➤ Constructed from high-grade 304 stainless steel
➤ Finished in smooth brushed stainless for durability and a clean look

Build Quality:
➤ TIG-welded for superior strength and precision
➤ 5" outlet design for maximum flow and minimal backpressure

Installation:
➤ Direct bolt-on fitment
➤ Designed for track/off-road use (check local emissions laws)
➤ May trigger a check engine light—ECU tune recommended

Benefits:

✔️ Boosts turbo efficiency
✔️ Lowers exhaust backpressure
✔️ Enhances overall driving experience
✔️ Built to withstand high-heat conditions

Compatible With:

• BMW M340i / M340i xDrive (G20) – Gen 3 B58
• BMW M440i / M440i xDrive (G22) – Gen 3 B58

Note: This downpipe is intended for off-road or track use only. Please confirm fitment before ordering. VIN confirmation available upon request.