aFe Large Bore-HD 4 IN 409 Stainless Steel Downpipe (49-43025-1) 18830 steel construction and smooth body

steel construction and smooth body designed for motorsports applications

5% FS (+/- 1 PSI)

8AN Male Flare to 8AN Male Flare Bulkhead Adapter 90-Degree (Incl Nut)

Maps are available for completely stock cars and modded alike

All flywheels are balanced to each spec

aFe Large Bore-HD 4 IN 409 Stainless Steel Downpipe (49-43025-1) 18830 steel construction and smooth bodyThe Large Bore HD down pipe upgrade kit is constructed of mandrel bent 409 stainless steel with OE style hangers and clamps. This 4" down pipe provides maximum flow for increased horsepower, torque and throttle response. The increased air flow also lowers EGT's and helps improve MPG. All hardware and components are included for a no trouble installation. Emissions Disclaimer: This product is not currently CARB exempt and is not available for purchase