Gravity Performance decats are engineered to instantly increase power by allowing exhaust gases to exit the vehicle more efficiently. Designed as a direct replacement for the OEM engine-side catalytic converter, this downpipe ensures smooth installation while delivering a significant improvement in exhaust gas flow. By replacing the restrictive stock components with a free-flowing pipe, this exhaust decat downpipe enhances performance and unlocks the true potential of your BMW 4 Series.
