BMW M3 & M4 Primary Catless Downpipes
Downpipes replaces the heavy and restrictive factory catalytic converters with a straight-pipe design for maximum power and exhaust sound.
- Fits all BMW F8x M3 & M4 vehicles (2015+)
- The perfect option for track cars and those who seek the ultimate in agressive exhaust sound
- Designed to fit seamlessly with the factory exhaust system, or as an add-on to Fabspeed's Valvetronic Exhaust System. (Also compatible with any other aftermarket exhaust system that is designed to fit like OEM.)
- Replaces the restrictive factory catalytic converters with a straight-through "straight-pipe" design for maximum power and exhaust sound.
- NOTE: Catbypass downpipes are recommended for track or off-road use only.