The APR DPK0004 Cast Inlet Downpipe replaces the restrictive factory downpipe with a larger, 76mm stainless steel mandrel-bent system, featuring a port-matched cast inlet, high-flow catalyst and various other features. Expect better throttle response, significant power gains, and an intoxicating exhaust note, while remaining civilized during normal daily driving.
The APR downpipe features an investment cast, T304L downturn designed to maximize flow and minimize turbulence. The mounting flange and bracket are integrated into the casting and with a wall thickness of 2.5mm, the APR downpipe produces a refined exhaust note compared to thin wall tubing systems. The cast downturn mates to a T304L flex section that is fully sealed with a corrugated inner lining to improve flow and reliability. The T304L exhaust pipe is rolled to 76mm diameter with a 1.5mm wall thickness.
APRs engineers specified a high-quality, high-flow GESi metal 300-cell catalyst ideal for forced induction application. Internally the catalytic converter features a proprietary blend of precious metals and loading technology that helps to reduce emissions and smell common on cat-less setups. With performance in mind, the catalyst is placed far away from the turbo outlet to reduce turbulence in the downpipe and to help reduce under-hood temperature. The low-profile catalyst features a fully captured substrate brick, which is furnace brazed to the outer mantle and physically captured by the diffuser cones preventing rattling, rotation, and damage to the substrate. Subsequently, a byproduct of running the catalyst is a reduction in noise, making the system as a whole more pleasing to the ear.
APR APR DPK0004 highlights:
T304L stainless steel construction.
Cast Inlet with port-matched v-band flange
300 cell, 100mm x 100mm GESi catalyst.
Argon back-purged TIG welding.
Brushed and de-burred piping.
Investment cast O2 bungs with billet plugs.
OEM-style slip-on clamps.
Reducer for OEM catback compatibility.
APR APR DPK0004 Downpipe Vehicle Fitment:
* 1.8T models may require use of APR EXH0015 Reducer (sold separately) for stock catback compatibility.
For compatibility with most 76mm catback exhaust systems, APR FIT0001 76mm Link Pipe(sold separately) must be installed between the APR downpipe and aftermarket catback.
APR APR DPK0004 Downpipe Manufacturing: The APR Downpipe is a fully T304L system with a cast downturn, flex section, 76mm tubing, and includes a GESi metal 300-cell catalyst. A stainless clamp and reducer are included as is a O2 extension harness.
APR APR DPK0004 Downpipe Install: Installation of APR downpipes typically takes 3-4 hours. Basic hand tools are necessary for installation, no cutting or welding is required. Please observe all safety precautions and follow proper installation guidelines while working on your vehicle.
APR products are warranted to be free from defects in the materials and workmanship prior to installation. This warranty does not cover labor, misuse, faulty installation, failure of related parts or parts purchased other than from APR, LLC. This warranty extends to the original purchaser for as long as they own the vehicle and the APR product.