products > Blow-off Valves

TurbosmartBlow-off Valves


 Turbosmart has manufactured the Blow-off Valve (BOV) Range with a focus on performance and reliability. Blow-off valves (also known as diverter valves, recirc valves, DV's etc.)  are proudly Australian made. In addition, Turbosmart Blow-off Valves are built and machined from rugged, durable billet aluminium. With a complete range of solutions. Also, Turbosmart offers OE Replacement and heavy-duty upgrades through all performance and street applications, race and, of course, motorsport use. 

Turbosmart's Kompact Range are upgraded valves that suit road cars for standard, high performance and tuned use. The Turbosmart Kompact blow-off valve Range includes the Kompact EM (Electro-Mechanical) series, which takes the best mechanical valves reliability and integrates factory control electronics and strategies. Furthermore, the Kompact Range relies on Turbosmart's proven positive seal piston. The boost-balance system for years of reliability and trouble-free motoring.

Similarly, the BOV5 Range, our 5th iteration of a genuine performance valve, shares the same boost-balance, positive seal piston technology as the Kompact Range. However, it is higher flowing than the Kompact range for higher horsepower setups. Also, the BOV5 has a massive list of bolt-on, model specific and Universal Applications. In short, the BOV 5 Range bridges the gap in the space between street and race where demand for greater flow requires a higher performance application. 

For high horsepower and no compromise. With solutions based on both positive seal piston and diaphragm style valves. Most of all, there are solutions for every application! In short, the Turbosmart Blow-off Valve's Range includes the Kompact, BOV5, Race Port, Power Port and Big Bubba.

Kompact RANGE including KOMPACT EM


The Turbosmart Blow-off Valve Kompact, including Kompact EM (Electro-Mechanical), is engineered to focus on quality materials, design, and integration. In addition, the Kompact Range features and benefits give vehicles the high-performance edge in boost handling capacity, reliability & response. Also, with bullet-proof, billet construction, the Kompact Range is a direct replacement & upgrade for OEM parts. Above all, it is competitively priced.


HIGH PERFORMANCE | HD / BOLT-ON UPGRADE | STREET | RACE (38mm Piston The Turbosmart BOV5 Range is well suited for street and race vehicles with its unique features and benefits designed for high flow and performance. Manufactured and designed around a 38mm piston and using our unique boost-balance technology. There's no amount of boost that will escape this proven classic. Also, the BOV5 line incorporates clever modular design, precision machining and assembly—all Australian made by hand and tested before shipping.

Race Port

ULTRA-HIGH PERFORMANCE | STREET | RACE | SUPERCHARGED - Up to 2500HP (50mm Valve) The Turbosmart Race Port Blow-off Valve features and benefits include its amazingly small and lightweight design for forced induction competition level engines. In addition, it is 50% lighter and 25% smaller than the competition. At the same time, it is flowing 330 CFM - making it the highest flowing BOV of its type on the market. Also, the Race Port has a race-proven street, strip, and circuit results featuring our unique collar design, twin 1/8” NPT pressure ports, and internal flow structures.

Big Bubba

HIGH PERFORMANCE | STREET | RACE | SUPERCHARGED | DIESEL PERFORMANCE - Up to 1500HP (2"/50.4mm Piston) One of the core features and benefits of the Big Bubba Range is that it is our most oversized piston style blow-off valve. In addition, this type of BOV design suits large capacity supercharged and turbocharged engines, including turbo-diesels. The Big Bubba range features precision engineering, bigger inlet and outlet ports, hard anodised and lightweight aluminium pistons. Also, the Big Bubba comes with a solid v-band mounting system.

Power Port

ULTRA-HIGH PERFORMANCE | RACE | SUPERCHARGED - Over 3000HP (60mm Valve) The Turbosmart Power Port resets the flow benchmark set by our popular and highly regarded Race Port BOV. In contrast, the Power Port is the largest and highest flowing Blow-Off Valve ever. Also, the Power Port Range features and benefits include its massive 2.5inch inlet, unprecedented valve lift, and supersized ports. In addition, its carefully designed CFD flow paths mean it has more than enough breathing room for even the most powerful turbocharged drag racing engines. Therefore this prevents damage to compressor surge and throttle plate damage at the end of the quarter-mile, even at the most extreme boost levels.

BOV Controller

HIGH PERFORMANCE | STREET | RACE | DIESEL PERFORMANCE | SUPERCHARGED  The Turbosmart BOV controller is an electronic device that controls the pressure signal to the BOV. In addition, it works by detecting a negative voltage change in the throttle position. Furthermore, it energises a solenoid to vent all of the air out of the BOV cap. Therefore, it causes a pressure differential between the piston of the BOV and the cap. As a result, this vents pressure from the intake system.

Spares and Accessories

TURBOSMART BLOW-OFF VALVES | HIGH PERFORMANCE | DIESEL PERFORMANCE | RACE | STREET | SUPERCHARGED  Are you looking for spare's & accessories or serviceable items for your Turbosmart product? Look no further! We carry everything to ensure that your Turbosmart blow-off valves are always running at peak performance. We supply tension clamps, springs, blanking plugs, adaptors, solenoids, weld flanges and many more items. Don't settle for non-genuine parts. Make sure your Turbosmart.