QT Downpipe B58 4.5" (M140i, M240i, 340i, 440i, 540i, 740i)

The delivery time for products in stock is 1-3 business days.

If the product is not in stock and it is a pre order product, the average delivery time is 5-21 business days. If the product has a longer delivery time than previously announced, we will be in touch.

QT Parts Downpipe - Greater flow, lower exhaust temperature & better sound.

When tuning a turbo engine, the first few centimeters of the pipeline are the most critical. The downpipe should be the first component to be replaced.

Available in Decat and 200CPI models.

• TIG Welded - T-304 Stainless Steel
• Better sensitivity & throttle response
• 4.5" Model
• Aggressive sound
• Lower Exhaust Temperature
• Forever warranty

*The product is not ECE approved. ECE approved model by clicking HERE

Confirmed fit: