BMW G30 540i Catback Exhaust System

Unlock the True Character of the B58. The BMW G30 540i is a luxury sedan that hides a powerhouse beneath its understated exterior — the legendary B58 inline-six. However, the factory exhaust system restricts both flow and sound, leaving the car’s performance potential partially muted. The Yonristic Performance Catback Exhaust System is engineered to restore the voice and efficiency this engine deserves. Featuring a true 3-inch midpipe design paired with a high-flow resonator, this system optimizes exhaust velocity while balancing tone refinement and volume. The high-flow resonator smooths unwanted harshness at mid-range RPMs, producing a deep, aggressive, and clean exhaust note without drone inside the cabin. Every bend is CNC-mandrel-formed for consistent diameter and flow, with precision TIG welds ensuring strength, durability, and aesthetic perfection. Completing the transformation is a quad-tip rear section, replacing the factory dual-exit layout with a sportier, M-inspired presenc