QT Downpipe B58 OPF (M340i, 440i, 540i, 545e, 640i, 740i, 745e, Z4 M40i, A90 Supra)

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.

for models equipped with OPF.

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

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

Confirmed fit: