Forge Motorsport N54 Recirculation Diverter Valves (Pair) for BMW 1M, 135i, 335i, 535i - Billet Aluminium Piston DV Upgrade Kit, Direct-Fit Twin-Turbo Replacement - FMDVBM35
Forge Motorsport N54 Recirculation Diverter Valves (Pair) for BMW 1M, 135i, 335i, 535i - Billet Aluminium Piston DV Upgrade Kit, Direct-Fit Twin-Turbo Replacement - FMDVBM35
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Forge Motorsport N54 Recirculation Diverter Valves (Pair) for BMW 1M, 135i, 335i, 535i - Billet Aluminium Piston DV Upgrade Kit, Direct-Fit Twin-Turbo Replacement - FMDVBM35

£178.80
£178.80
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Forge Recirculation Valves for BMW 1M N54, the ultimate N54 diverter valve upgrade

Upgrade your BMW 1M N54 twin-turbo engine with the Forge Motorsport recirculation diverter valves, engineered to fix common OEM DV failures and hold boost reliably on stock and tuned cars. Built around the proven 007P piston-based architecture and redesigned to suit BMW’s unique connection system, these valves deliver fast response, leak-free performance and long-term reliability for spirited road use and track days.

Part number: FMDVBM35

Why choose Forge recirculation valves for your N54

BMW’s factory diaphragm valves are known to weaken, split and leak boost, especially on remapped N54 engines. The Forge Motorsport N54 diverter valves replace the failure-prone diaphragms with a robust piston design, improving boost holding capability and response without introducing fault codes. Expect stronger, more consistent boost, sharper throttle response and dependable operation on everything from a standard BMW 1M to a heavily modified N54 build.

Precision build quality

  • Precision CNC machined from T6-6061 billet aluminium for strength and durability
  • Piston-based internal design derived from the best-selling Forge 007P for fast response and reliability
  • Viton high temperature O-rings for superior sealing under sustained heat
  • Mobil 1 fully synthetic bearing grease for smooth, consistent valve operation
  • Direct fit with BMW’s unique connection mechanism, no permanent modification

Tunable for your boost level

Each valve is fully tunable via interchangeable springs to match stock, Stage 1, Stage 2 and higher power levels, while retaining maximum piston travel and flow volume. Unlike single-spring preload designs that lose travel as tension increases, Forge’s spring system keeps response and venting performance consistent.

Engineered hoses and clamps

  • Custom multi-layer, fabric-reinforced silicone hoses, compatible with the stock airbox and charge pipes
  • Quality clamps with bevelled band edges and a pressed-in drive mechanism, designed specifically for silicone hoses and approved for demanding applications

Real-world results

We have installed these Forge N54 recirculation valves on our own cars and customer BMW 1M, 135i, 335i and 535i builds. Feedback has been consistently positive for boost stability, throttle response and long-term reliability. This kit is ideal whether you want a preventative upgrade on a factory car or a dependable diverter valve solution for a high-boost tune.

Fitment and compatibility

Developed specifically for BMW’s N54 twin-turbo engine as found in the BMW 1M, 135i, 335i and 535i. Direct replacement for the OEM Bosch-style valves with BMW’s specific connection system. Suitable for stock and modified cars running upgraded intakes, exhausts and ECU software.

Key benefits

  • N54 diverter valve upgrade that holds boost under load and reduces the risk of boost leaks
  • Recirculation design keeps the ECU happy and drivability smooth
  • Improved reliability over OEM diaphragm valves on tuned N54 engines
  • Fast response and excellent flow at throttle lift for smooth power delivery
  • Direct fit, no cutting or permanent changes needed

In the box

  • 2 x FMDVBM35 Valve, left and right
  • 1 x 25 mm x 400 mm Mega Flex Hose
  • 1 x 25 mm x 330 mm Mega Flex Hose
  • 4 x 40 mm Hose Clamps
  • 2 x Uprated Yellow Spring
  • 1 x Forge Sticker

Professional fitting available

We recommend professional installation for the best results. Nforcd offers fitting at our workshop in Warwickshire. Request a quote at Sales@nforcd.com.

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