Skip to content

Tial Q 50mm BOV

Original Price $325.00
Current Price $278.95

Notify me when back in stock

Tial Q is the first revision of the original TiAL BOV. The Q bolts up to any standard TiAL flange, no re-welding.  This is the highest flowing BOV on the market.  It's offered with a variety of springs for different vacuum levels and a special spring specifically for supercharged vehicles.


  • -11 psi Spring

    The first revision of TiAL's original BV50 blow-off valve, the Q Series flows 60% more than its predecessor and bolts to any standard TiAL flange without welding. An included weld mounting flange (available in aluminum, mild steel, and stainless steel) cut for 2-1/2'' pipe and CNC machined aluminum V-band mounting clamp with stainless steel hardware create a durable corrosion-free appearance. A banjo-type aluminum air fitting and bolt with 1/4" hose barb allow quick actuator response. Springs available to accommodate various vacuum levels and supercharged applications.