Audi 4.0T APR Cast Downpipes
Audi 4.0T APR Cast Downpipes

Audi 4.0T APR Cast Downpipes

Regular price $1,999.99


The APR Cast Downpipe Exhaust System replaces the restrictive factory catalyst cross pipes and resonators with an upgraded 76mm stainless steel mandrel-bent system, featuring port-matched cast inlets, high-flow catalysts and various other features.

  • Expect a decrease in turbo lag with power and torque gains as high as 59 HP and 95 FT-LBS of torque over APR Stage I!
  • The APR system is a full downpipe upgrade as it replaces the kinked 60mm catalyst cross pipes and resonated midpipes with straight through, 76mm mandrel-bent tubing.
  • The factory inlets are restrictive. APR’s cast system allows for massive, port-matched inlets that smoothly neck down over a long distance. The result is improved flow, better response and more power.
  • GESI’s encapsulated catalysts are known for their strength and performance. Expect lower emissions, reduced noise and less exhaust smell compared to catless setups, all without negatively impacting performance to over 1,000 HP. Furthermore, with the catalyst moved, expect a cooler engine bay!
  • Bolt-on and go! The system is fully compatible with the factory catback exhaust.
  • With every APR downpipe purchase comes a free upgrade to Stage II from Stage I, saving consumers hundreds of dollars!

 

 

 

 

 

 

*For Offroad Use Only*