because only in these are the flaps of your GRAIL closed and only when closed is the rear silencer part of the exhaust flow

Lowering at recommended setting approx

a performance increase of approx

which are developed and adapted for your vehicle in the GRAIL sound laboratory

we recommend combining this front splitter with the MHC+ performance style ducts and MHC+ GT-style front grilles

MHC+ BMW M3/M4 Performance Style Front Splitter In Pre Preg Carbon Fibre (G80/G81/G82/G83) Abgasanlage because only in these areMHC+ BMW G80 M3 G82 M4 Performance Style Front Splitter In Pre Preg Carbon Fiber is a beautiful OEM+ front lip designed to enhance the look of BMW's G8X platform. With a BMW M Performance inspired design, this splitter integrates seamlessly into the shape of the factory front bumper, adding extra aggression and increasing road presence. To complete the look, we recommend combining this front splitter with the MHC+ performance style ducts and MHC+ GT