Description
Enhance reliability and boost control on your Audi RS4 or RS5 B9 2.9T with this high-performance Forge Motorsport Recirculation Valve Kit. Designed as a direct replacement for the factory solenoid valves, this pair of Forge valves delivers improved durability, rapid response, and seamless integration with OEM electronics.
The factory diverter valves are known to suffer from diaphragm failure, which can result in boost leaks and reduced performance. Forge Motorsport addresses this weakness with a billet aluminum construction and a piston-based design, eliminating the risk of rupture and offering vastly superior reliability under demanding conditions.
This complete kit includes two recirculating valves, a custom wiring harness, and all necessary hardware to ensure plug-and-play installation—no fault codes, no check engine lights, and no compromises in performance.
Key Features:
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Designed specifically for Audi RS4 & RS5 B9 2.9T (2018–2024)
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Fully billet alloy construction for long-term durability
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Piston-based internal system for improved reliability over OEM diaphragms
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Solenoid-operated for rapid response and precise control
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Integrates with OEM ECU and electronics—no CEL or DTCs
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Direct-fit with custom harness and mounting hardware
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Ideal for both stock and tuned applications
What’s Included:
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2 x Forge Motorsport Recirculating Valves
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O-rings for sealing
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Vacuum tubing
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Solenoid
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Custom wiring harness
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Mounting bracket and hardware
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Cable ties
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2 x Uprated springs (one for each valve)
Vehicle Fitment:
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2018–2019, 2021–2024 Audi RS4 (B9) – 2.9L Twin-Turbo V6
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2018–2019, 2021–2024 Audi RS5 (B9) – 2.9L Twin-Turbo V6
Ensure consistent boost pressure and eliminate common OEM valve failures with Forge Motorsport’s premium solution. Built for performance. Backed by experience.