BMW X5 40i G05 & X6 40i G06 B58 valved cat-back exhaust - Stone AP542 AP549

Direct-fit valved cat-back for the BMW X5 40i (G05) and X6 40i (G06) with B58 engine. Designed for fast-road and track-day use, it delivers deep Sport mode tone and near-silent cruising - no drone, no compromise.

• OEM valve integration - factory ECU controls opening/closing; no coding or extra wiring
• B58-optimised tuning - zero drone on motorway runs, full throttle response preserved
• Bolt-on fit - uses 3D-scanned OEM mounting points; includes OPF delete module on request
• Valvetronic remote optional - plug-and-play OBDII controller for manual valve control