ARMYTRIX Stainless Steel Valvetronic Catback Exhaust System Quad Carbon Tips BMW M3 | M4 F8x 15+To harvest the full potential of the M3 M4 engine, we utilize quality T304 stainless steel, forged with the most advanced technologies and by the highest standard, to build our valvetronic exhaust. Meticulously engineered, the system handles an increased volume with ruthless efficiency. The refinement and amplification of power and sound alter the entire identity of the vehicle. Upgrades to HP and torque provide more freedom than ever and the auditory

For the enthusiast interested in a more aggressive sound

These pads are compatible with your hardware already located on the vehicle

We recommend these +1MM oversized valves for high horsepower applications

The silicone hoses included in the kit are manufactured using high quality automotive grade silicone

Power and torque gains throughout the entire rpm range

Cars without the AMG Performance Exhaust do not need valve simulators

0 Turbo (F10) Performance 2012 thru 2013

They are DOT approved

and cause bad fuel mileage

Most 2001 models will be AWW engine code

Chromoly Heim Joint Ends with PTFE lining

The Milltek 3" Downpipe & Hi-Flow Cat for Audi & Volkswagen 2