4" OEM Replacement Downpipe

Turn your FLO~PRO 4" downpipe-back exhaust into a complete turbo-back system.

This 4" downpipe directly replaces the factory downpipe, creating a larger, smoother exhaust path from the turbo into your existing 4" exhaust system. It is designed specifically for trucks already equipped with—or being upgraded to—a compatible FLO~PRO 4" downpipe-back system.

Built for proper fitment and dependable performance, this downpipe eliminates the need to retain the smaller factory section when installing a downpipe-back exhaust.

Features

• Replaces the factory OEM downpipe
• Converts a compatible 4" downpipe-back exhaust into a complete turbo-back system
• Provides a full 4" exhaust path from the turbo outlet
• Direct-fit design for straightforward installation
• Connects to compatible FLO~PRO 4" downpipe-back systems
• Built for dependable fitment and long-term durability

Important: This downpipe is intended for use with compatible 4" downpipe-back exhaust systems. Confirm vehicle and exhaust-system fitment before ordering.