Turbosmart Gen V Pro-Gate 50 External Wastegate - 7psi | Black | 50mm (TS-0554-1002)

Take control of your boost with the Turbosmart Gen V Pro-Gate 50 external wastegate. The highest flowing 50mm external wastegate in the world, the Gen V WG50 Pro-Gate 50 delivers motorsport-proven boost control with world-leading extended thermal performance, fatigue resistance, and best-in-class flow performance — providing optimum boost control and longevity for serious turbocharged builds. Supplied with a 7psi base spring in black finish.

Key Features:

• 50mm external wastegate
• Highest flowing 50mm external wastegate in the world
• Gen V design — Turbosmart's latest generation
• 7psi base spring included
• Black finish
• Extensive user configurability
• World-leading extended thermal performance
• Best-in-class fatigue resistance
• Universal fitment for custom turbo applications
• 4.3 lbs

Performance Benefits:

• Maximum Flow: Highest flowing 50mm external wastegate available — minimal restriction for precise boost control
• Precise Boost Control: 50mm valve size provides excellent boost control authority across a wide boost range
• Extended Thermal Performance: Gen V design handles sustained high-temperature operation better than previous generations
• Fatigue Resistance: Engineered for long-term reliability under the cyclic loading of boost control operation
• User Configurability: Extensive adjustment options for spring preload, port configuration, and boost control setup
• Motorsport Proven: Trusted by professional race teams worldwide in the most demanding applications

Specifications:

• Brand: Turbosmart
• Part Number: TS-0554-1002
• Product: Gen V Pro-Gate 50 External Wastegate
• Valve Size: 50mm
• Base Spring: 7psi
• Finish: Black
• Generation: Gen V
• Weight: 4.3 lbs
• Barcode: TS-0554-1002

Fitment Information:

• Universal fitment — designed for custom turbo manifold and external wastegate applications
• Note: Requires a dedicated external wastegate flange on the turbo manifold — not a direct bolt-on for internal wastegate turbochargers
• Note: Verify wastegate flange size and port configuration compatibility with your manifold before ordering
• Note: 7psi base spring — boost level is adjustable with a boost controller; additional springs available from Turbosmart for different base pressure requirements
• Installation: Professional installation recommended

What's Included:

• Turbosmart Gen V Pro-Gate 50 external wastegate — black (TS-0554-1002)
• 7psi base spring
• Hardware and fittings per Turbosmart documentation
• Note: Refer to Turbosmart installation and setup documentation for port configuration and boost controller connection

Installation Notes:

• Professional installation recommended
• Weld or use a compatible flange to mount wastegate to turbo manifold
• Orient wastegate for correct exhaust gas flow direction per Turbosmart specifications
• Connect boost reference port to intake manifold or charge pipe
• Connect boost controller ports if using electronic or manual boost controller
• Verify all connections are leak-free before running engine under boost
• Allow wastegate to heat cycle before checking for leaks at flange

What is an External Wastegate?

A wastegate is a valve that controls boost pressure in a turbocharged engine by diverting exhaust gas away from the turbocharger's turbine wheel. When boost pressure reaches the wastegate's set point, the valve opens and routes exhaust gas around the turbine, reducing the energy driving the turbo and limiting boost pressure. An external wastegate is a separate unit mounted on the turbo manifold, as opposed to an internal wastegate which is integrated into the turbocharger's turbine housing. External wastegates are preferred for high-performance applications because they can be sized independently of the turbocharger, provide better flow capacity, and offer more precise boost control than internal wastegates. The exhaust gas discharged by an external wastegate is typically routed back into the exhaust system downstream of the turbo or vented to atmosphere on race applications.

Gen V — Turbosmart's Latest Generation:

The Gen V designation represents Turbosmart's fifth generation of Pro-Gate wastegate design, incorporating lessons learned from decades of motorsport use and customer feedback. The Gen V WG50 features significant improvements over previous generations in thermal management, fatigue resistance, and flow performance. The extended thermal performance of the Gen V design allows the wastegate to operate reliably in sustained high-temperature conditions — such as endurance racing or extended track sessions — where previous generation wastegates may have experienced seal degradation or reduced performance. The Gen V's improved fatigue resistance ensures the wastegate maintains consistent performance over a long service life, even under the cyclic loading of repeated boost control events.

50mm Valve Size — Flow and Control:

The 50mm valve diameter of the Pro-Gate 50 provides an excellent balance of flow capacity and boost control precision for a wide range of turbocharged applications. A larger valve provides more flow capacity — important for high-boost, high-flow applications where a smaller wastegate may not be able to bypass enough exhaust gas to control boost effectively. The 50mm size is suitable for applications from moderate street builds to serious race engines, providing the flow capacity needed for high-boost operation while maintaining the control authority needed for precise boost management. For reference, the Pro-Gate 50 is Turbosmart's mid-size external wastegate — larger than the WG38 (38mm) and smaller than the WG60 (60mm).

7psi Base Spring — Boost Control:

The 7psi base spring sets the wastegate's minimum opening pressure — the boost level at which the wastegate begins to open without any boost controller input. In a simple boost reference system (wastegate actuator connected directly to boost pressure), the wastegate will open at approximately 7psi, limiting boost to that level. With a manual or electronic boost controller, boost can be raised above the base spring pressure by restricting the boost signal to the wastegate actuator, allowing the turbo to build more pressure before the wastegate opens. The 7psi base spring is a common starting point for street and performance builds — Turbosmart offers additional springs in various pressures for different base boost requirements. Multiple springs can also be combined to achieve intermediate pressures.

Highest Flowing 50mm External Wastegate:

Turbosmart's claim that the Gen V WG50 Pro-Gate 50 is the highest flowing 50mm external wastegate in the world is a significant engineering achievement. Wastegate flow capacity directly affects boost control precision — a wastegate that cannot flow enough exhaust gas to control boost effectively will result in boost creep, where boost pressure rises above the target level under sustained high-RPM operation. Boost creep is a common problem with undersized or low-flow wastegates on high-power builds, and can cause detonation, engine damage, or inconsistent power delivery. The Pro-Gate 50's best-in-class flow performance ensures it can control boost effectively even on high-power, high-flow applications where lesser wastegates would struggle.

Boost Creep — Why Wastegate Sizing Matters:

Boost creep occurs when the wastegate cannot bypass enough exhaust gas to prevent the turbocharger from continuing to build boost above the target pressure. It is most common at high RPM and high throttle, where exhaust gas volume is greatest. Boost creep can be caused by an undersized wastegate, a wastegate with insufficient flow capacity, incorrect wastegate placement on the manifold, or a wastegate that is not opening fully due to incorrect spring or boost controller setup. The Turbosmart Gen V Pro-Gate 50's best-in-class flow performance minimizes the risk of boost creep by providing maximum exhaust gas bypass capacity for its 50mm valve size.

User Configurability:

The Gen V Pro-Gate 50 offers extensive user configurability for different boost control setups. The wastegate features multiple port configurations for boost reference and boost controller connections, allowing it to be used in simple single-port boost reference systems or more complex dual-port boost controller setups. The spring preload is adjustable, and Turbosmart offers a range of replacement springs in different pressures for fine-tuning the base boost level. This configurability makes the Pro-Gate 50 suitable for a wide range of applications and boost control strategies, from simple manual boost controllers to sophisticated electronic boost control systems.

Why Turbosmart?

Turbosmart is an Australian manufacturer of turbocharger boost control products, trusted by professional race teams and performance enthusiasts worldwide for their engineering quality, reliability, and innovation. Their wastegate, blow-off valve, and boost controller product lines are used in some of the world's most demanding motorsport applications, from drag racing to circuit racing to rally. Turbosmart's Gen V Pro-Gate 50 represents the pinnacle of their external wastegate engineering, combining decades of motorsport experience with the latest materials and manufacturing technology.

Perfect For:

• Custom turbo manifold builds requiring a high-flow 50mm external wastegate
• High-boost street and track builds wanting Turbosmart Gen V boost control reliability
• Race builds requiring motorsport-proven external wastegate performance
• Builds upgrading from an internal wastegate turbo to an external wastegate setup
• Any turbocharged application requiring best-in-class 50mm external wastegate flow and control

Perfect For: Custom turbocharged builds requiring Turbosmart Gen V Pro-Gate 50 external wastegate for best-in-class 50mm flow, precise boost control, extended thermal performance, and motorsport-proven reliability.

Pro Tip: Position the wastegate as close to the turbocharger's turbine inlet as possible on your manifold — the closer the wastegate is to the turbine, the more effectively it can divert exhaust gas before it drives the turbine wheel, improving boost control precision and reducing the risk of boost creep.

50mm | 7psi Base Spring | Black: Gen V design. Highest flowing 50mm external wastegate. Universal fitment. Requires external wastegate flange on manifold. 4.3 lbs. Additional springs available for different base boost levels.

Control your boost with Turbosmart Gen V Pro-Gate 50 — highest flowing 50mm external wastegate, 7psi base spring, black, motorsport-proven performance and reliability.