Plug-and-play billet blow-off valve upgrade for the BMW N55, replacing the failure-prone factory plastic diverter. Turbosmart’s billet Boost-Balance valve with onboard EM solenoid delivers better sealing under boost and full OE integration – bolt on, plug in, done. Choose your vent style below.
Valve Type
- Dual Port (VR9) – vents partly to atmosphere for audible flutter while keeping the factory drivetrain logic intact.
- Plumb Back (VR9) – vents 100% back to the inlet for OEM-quiet running and zero compressor surge; the clean daily-driver choice.
Compatibility
N55 / N13 – BMW 1, 2, 3, 4, 5, 6, 7 Series, X3 & X4 (e.g. F20 M135i, F22 M235i, F30 335i, F32 435i, F10 535i). Not for the M2 (F87) – see our M2-specific listing.
Ships in 1–2 weeks. Product is made to order.







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