SLE Catless Downpipes (Primary and Secondary) – G90 BMW M5 (S68)

SLE Catless Downpipes (Primary & Secondary) – G90 BMW M5 (S68)

The SLE Primary & Secondary Catless Downpipes for the G90 BMW M5 are designed to maximize exhaust flow and unleash the full potential of the S68 twin-turbo V8. By removing both restrictive factory catalytic converters, these downpipes reduce backpressure, improve turbo efficiency, and produce a deeper, more aggressive exhaust tone.

Constructed from high-quality T304 stainless steel and precision TIG welded, the SLE Downpipes are built to perform under extreme conditions while maintaining a direct bolt-on installation for seamless fitment. Expect significant improvements in turbo spool, throttle response, and horsepower.

Product Features

• Full primary and secondary catless downpipe design for maximum flow

• T304 stainless steel construction with TIG welded joints

• Smooth mandrel bends for optimized exhaust velocity

• CNC-machined flanges for perfect, leak-free fitment

• Direct bolt-on installation using OEM-style connections

• Dramatically improved turbo spool, throttle response, and exhaust sound

Vehicle Compatibility

• G90 BMW M5 (2025–Present) — S68 Twin-Turbo V8

Note: For off-road use only. An ECU tune is required to prevent check engine lights and to maximize performance gains.