Secondary Downpipes BMW M5 G90 G99 S68Secondary downpipes for the BMW M5 G90 sedan and M5 G99 Touring 4. 4i V8 S68 are designed to replace only the secondary (lower) catalytic converters in the exhaust system, leaving the primary catalytic converters intact. This option allows to enhance the vehicle's exhaust sound and improve performance with a straightforward modification while maintaining a higher level of emissions compliance compared to removing both primary and secondary catalytic

reducing turbulence and increasing exhaust velocity

Material & Build Quality: BRONDEX® Downpipes are constructed from high-quality stainless steel (AISI 304)

Stainless-steel version

Construction with high-quality titanium tubes

a BRONDEX® Downpipe can help increase power and torque

which is distinctly different from the M8 with a stock system

Combined with a Slip-On Line (Titanium) delivering a deep

Maximized Engine Output: Delivers peak performance with improved exhaust flow and lower heat retention

including the housing of the valves and collectors from the central muffler to the tailpipes

3 hp) at 2

The exhaust tone is most noticeable as you move through the gears and accelerate

Torque: +6