Blow Off Valves

The RacePort Series Blow Off Valve is famous for being an amazingly small and light BOV for supercharged competition-level engines. Featuring our unique collar design and internal flow structures, it is 50% lighter and 25% smaller than the competition while flowing 330 CFM – making it the highest flowing BOV of its type on the market.
The Highest-flowing BOV in the Turbosmart range has just been redesigned and now features our unique collar design.
The Supercharger-Specific RacePort features a softer (4 InHg) spring to stay idle when the supercharger is still producing a boost.

• Milspec Hard-Anodized Valve Guide and Stem
• Billet 6000 Series Aluminum Construction
• Options Valve Position Sensor Upgrade
• Quick Release Aluminum V-Band Collar
• Hi-Temp Silicon Nomex Diaphragm
• 2.0″ Inlet flows over 330 CFM
• Twin 1/8″NPT Reference Ports
• Positive Sealing Valve Seat
• Boost Balance Technology

The Turbosmart RacePort is famous for being an amazingly small and light BOV for turbocharged competition-level engines. Featuring our unique collar design and internal flow structures, it is 50% lighter and 25% smaller than the competition while flowing huge CFM – making it the highest flowing 50mm / 2.0″ valve on the market.

• Mil-spec hard anodized valve guide and stem
• Hi-temp mil-spec silicone Nomex diaphragm
• Billet 6000 series aluminum construction
• Optional valve position sensor upgrade
• Quick release aluminum V-band clamp
• Turbosmart unique locking collar
• Twin 1/8″ NPT reference ports
• Positive sealing valve seat
• 38mm recirculation fitting
• Boost-balance technology
• 2.0″ / 50mm inlet

The Smart Port is an innovative Blow Off Valve combining advanced design with precision CNC machined billet components. The valve works using two staged ports and a one-way valve on the trumpet outlet. This enables the Smart Port BOV to work like both a bypass AND vent to atmosphere valve in one while also eliminating stalling and significantly reducing the chances of low-speed compressor surge. In addition, the Smart Port’s unique lightweight piston is made from aerospace alloy with a military-spec coating, resulting in quicker valve response, better sealing and superior durability.
Our latest Type 5 Dual Port BOV made specifically for the EVO 4 through X features the innovative new Smart Port drive-by-wire friendly staging technology that gives you the response of a plumb-back valve.

• Smart Port trumpet eliminates stalling and allows smooth integration with the car’s factory engine mapping
• A Milspec, lightweight, aluminum piston providing excellent valve response and prolonged piston life
• Staged dual ports allow for bypass and vent-to-atmosphere operation in one valve
• Manufactured, assembled and validated in-house at Turbosmart HQ
• All billet CNC construction and attractive anodized finish
• Direct fit upgrade for the factory BOV on EVO IV to X

The Smart Port is an innovative Blow Off Valve combining advanced design with precision CNC machined billet components. The valve works using two staged ports and a one-way valve on the trumpet outlet. This enables the Smart Port BOV to work like both a bypass AND vent to atmosphere valve in one while also eliminating stalling and significantly reducing the chances of low-speed compressor surge. In addition, the Smart Port’s unique lightweight piston is made from aerospace alloy with a military-spec coating, resulting in quicker valve response, better sealing and superior durability.
Our latest Type 5 Dual Port BOV made specifically for the EVO 4 through X features the innovative new Smart Port drive-by-wire friendly staging technology that gives you the response of a plumb-back valve.

• Smart Port trumpet eliminates stalling and allows smooth integration with the car’s factory engine mapping
• A Milspec, lightweight, aluminum piston providing excellent valve response and prolonged piston life
• Staged dual ports allow for bypass and vent-to-atmosphere operation in one valve
• Manufactured, assembled and validated in-house at Turbosmart HQ
• All billet CNC construction and attractive anodized finish
• Direct fit upgrade for the factory BOV on EVO IV to X

When Turbosmart began making performance products back in 1997, a great amount of effort was put into the design and manufacturing process to ensure our products created a new standard. More hand-crafted than mass-produced, Turbosmart products quickly gained acceptance within the performance community for their quality and reliability. Coupled with extraordinary service and after-sales support, Turbosmart quickly became one of the most sought-after names in the industry. Not much has changed since then. Although our product line and the company itself have grown considerably, the products are still designed and manufactured in our factory in Sydney, Australia, using the same tried and proven formula of innovative design, strict quality control, and rigorous testing. We have invested in our research facility manufacturing equipment and staff training to ensure our products continue to perform up to and beyond your expectations. At Turbosmart, we do not believe in cutting corners and half-measures. We do not accept anything short of perfection – and neither should you.
Easy to Install and Setup, Turbosmart Supersonic BOV. Preferred venting solution for serious street tuners and racers. Big flow and even bigger sound.
Behind every Turbosmart product stands a long and rich racing history. While a majority of Turbosmart products are used on street cars, their design and testing procedure is identical to the high-end purpose-made racing products. Before reaching the consumer, Turbosmart products are subjected to a range of tests performed in the most demanding environment, the race track.
Mazda CX7 2.3L Turbo 2006-2012; Mazda Mazdaspeed (MPS) 3 (BK series) 2007-2009; Mazda Mazdaspeed (MPS) 3 (BL series) 2010-2013; Mazda Mazdaspeed (MPS) 6 2005-2007; Subaru Forester XT (EJ25) 2008-2012; Subaru Liberty/Legacy GT 2003-2008; Subaru WRX 2008; Subaru WRX 2009-2014

• Vehicle Specific Flange

Easy to Install and Setup, Turbosmart Supersonic BOV. Preferred venting solution for serious street tuners and racers. Significant flow and an even bigger sound.
Easy to Install and Setup, Turbosmart Supersonic BOV. Preferred venting solution for serious street tuners and racers. Big flow and even bigger sound.