Description
The Forge Motorsport FMDVF20R Recirculation Valve Kit is the ultimate performance and reliability upgrade for BMW M135i and M235i F20/F21 models equipped with the N55 3.0L Turbo engine and electronic OEM bypass valves. This piston-based recirculation valve is designed to replace the failure-prone factory diaphragm unit, offering a quiet and durable solution that is both track-tested and road-proven.
With BMW’s OEM valve prone to internal diaphragm failure—especially in high-boost or warm climate conditions—this issue can result in power loss, turbo inefficiency, or even catastrophic turbo damage. Because these failures do not always trigger a check engine light, many drivers remain unaware their vehicles are underperforming. In severe cases, the OEM valve may even disintegrate upon removal, sending debris into the turbocharger.
Forge's precision-engineered alternative eliminates this risk. The FMDVF20R valve features a CNC-machined billet aluminum body with a pressure- and vacuum-actuated piston design, ensuring long-term durability and enhanced boost response. This system retains full OEM ECU control, allowing for seamless integration with your vehicle’s electronic boost management system.
Whether your vehicle is stock or has an upgraded ECU map, this valve is a recommended preventative upgrade to maintain power and reliability.
Key Features:
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Direct replacement for OEM electronic bypass valve
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Ideal for tuned vehicles or high-heat environments
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Piston-based internal design (no diaphragm) for enhanced durability
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CNC-machined aluminum construction
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Retains OEM ECU control of valve actuation
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Protects turbo from potential plastic debris damage
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Quiet operation – ideal for daily driving and performance builds
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Full installation kit included
What’s Included:
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1 x FMDVF20R Recirculation Valve
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1 x 3000mm of 4mm Vacuum Tube
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1 x 100mm of 6mm Vacuum Tube
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1 x 50mm of 6mm Vacuum Tube
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1 x Solenoid, Mounting Bracket, and Screws
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10 x Cable Ties
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1 x Uprated Blue Spring
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1 x 8-4-8 T-Piece
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1 x Forge USB with Instructions
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1 x Forge Motorsport Keyring and Sticker
Spring Tuning Available:
If your vehicle requires custom tuning for higher boost levels, an optional Forge Spring Tuning Kit is available separately.
Vehicle Fitment:
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BMW M135i / M135i xDrive (F20/F21) – 3.0L N55 Turbo – 2012 to 2016
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BMW M235i / M235i xDrive (F22/F23) – 3.0L N55 Turbo – 2014 to 2016
