TEGIWA BMW F8X M3 M4 S55 DECAT DOWN PIPES. As you probably know the primary cars are a huge restriction in the E8X M4 exhaust system. These are designed to simply replace the OE cats and are an easy DIY install as this uses a slip on clamp design.
This comes with 2 O2 spacers, to retain the OEM sensors and prevent codes from arising, as well as this the bosses are welded into OEM positions ensuring an easy fit – unlike many on the market.
Please note: this is designed for off-road/motorsport use only. You will not pass a UK emissions test or police road side check with this installed on the vehicle.
