ARD PRP-439 Downpipe 4.5" with Heat Shield for BMW M240i / 340i / 440i / 540i / 740i xDrive B58 2016+

Description ARD PRP-439 Downpipe 4.5\" with Heat Shield for BMW M240i / 340i / 440i / 540i / 740i xDrive B58 2016+

The ARD PRP-439 4.5-inch downpipe with integrated heat shield is designed for BMW models equipped with the B58 engine, including the M240i, 340i, 440i, 540i, and 740i xDrive from 2016 and onward. This high-flow downpipe improves exhaust gas evacuation and reduces turbocharger backpressure, resulting in faster spool, increased horsepower, and enhanced throttle response. The integrated heat shielding minimizes thermal transfer to surrounding engine bay components, making it ideal for high-performance street or track use.

• Engineered for BMW B58 engines in M240i, 340i, 440i, 540i, and 740i xDrive (2016+)
• 4.5-inch diameter increases exhaust flow and reduces restriction
• Integrated heat shield reduces under-hood temperatures
• Supports performance tuning with improved turbo efficiency

Specifications:

• Pipe Diameter: 4.5 inches
• Material: Stainless steel with thermal shielding
• Fitment: BMW B58 engines (M240i / 340i / 440i / 540i / 740i xDrive) 2016+
• Design: High-flow, heat-shielded downpipe