Valvetronic Design BMW G29 Z4 M40i Valved Sport Exhaust System Tips:(4) Burnt (3.5" Outlet) the blow-by is then vented

the blow-by is then vented into the intake to be reburned

Those improvements result in increased heat transfer and overall improved cooling efficiency

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It comes with a heat shield which attaches using existing vehicle mounting points

Valvetronic Design BMW G29 Z4 M40i Valved Sport Exhaust System Tips:(4) Burnt (3.5" Outlet) the blow-by is then ventedUnleash the true potential of your BMW Z4 M40i with the Valvetronic Designs Valved Exhaust Systema performance upgrade born from extensive research and development on the B58 powered platforms, including the Supra and M340i. At Valvetronic Designs, we dont believe in compromise, and we know you dont either. Thats why weve engineered the perfect exhaust setup to elevate both the performance and sound of your Z4 to an entirely new level. Engineered for