ARMYTRIX Stainless Steel Valvetronic Catback Exhaust System Quad Matte Black Tips BMW 5-Series F10 11-17To harvest the full potential of the BMW 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

NOTE: Fabspeed's 200-cell high-flow catalytic converters are not C

This system is constructed of 2

Since PAO Oil 68 is compatible with many other lubricants and refrigerants

500 RPM will make a significant difference in drivability

0T exhausts that are currently available can choke peak power and limit the breathing due to their 2

THESE FIT BFI VERSION 1 MOUNTS ONLY

Torque for new bolts is 70Nm plus 1/4 turn

Simple DIY installation in under 30 minutes

This is a deep bass tone

Sport Cat X-Pipe

This has led to the ECE R90 brake safety regulation approval of R90 which is now completed and certificates are being obtained (during July 2011)

This system is the perfect exhaust solution for maximum performance and sound during competitive track use