JDY 4-Inch Downpipe - BMW M2 (G87) / M3 (G80 / G81) / M4 (G82 / G83) S58

The JDY 4-inch downpipe replaces the factory downpipes on BMW S58 engines in the G87 M2, G80 and G81 M3 and G82 and G83 M4, in both left- and right-hand drive. It bolts to the factory twin-turbo system and connects to an OEM or aftermarket mid-pipe or catback without modification. JDY shaped the flow path with CFD and CAE analysis to cut backpressure for quicker turbo spool and sharper throttle response. Choose the Catless version or the 200-Cell Sport Cat version with a high-flow metallic catalytic converter, both with a ceramic thermal coating to reduce heat soak.

Features

• 304 stainless steel construction for resistance to corrosion, heat and vibration
• High-temperature ceramic thermal coating on both versions to reduce engine bay heat
• 200-Cell Sport Cat version uses a high-flow metallic substrate catalytic converter
• CFD-optimised housings to reduce backpressure and improve spool
• Developed with laser 3D scanning and CAD for a precise fit in the G8X chassis
• Full argon-shielded TIG welding with polished inner welds and ultrasonic NDT checks
• Direct bolt-on to the factory turbos and OEM or aftermarket mid-pipes
• Suits LHD and RHD cars

Specifications

• Brand: JDY
• Product Type: Downpipe
• Material: 304 stainless steel (06Cr19Ni10)
• Construction: Cast and TIG welded
• Main Diameter (Catless): 4.0 inch (101.6mm)
• Main Diameter (Sport Cat): 5.0 inch (quoted by JDY as 130mm)
• Outlet Diameter: 2.75 inch (70mm)
• Catalyst (Sport Cat): 200-cell high-flow metallic substrate
• Coating: High-temperature ceramic
• Versions: 200-Cell Sport Cat and Catless
• Fitment: Direct bolt-on, LHD and RHD
• Part Numbers: S58-253-JDY-PA (200-Cell Sport Cat), S58-253-04E-PA (Catless)

Vehicle Compatibility: 5 applications across 1 make. Select a make to view.

Please confirm fitment against your vehicle before ordering. Contact us if you need help selecting the right part.