TiAL 50mm Q Blow Off Valve
TiAL Sport Q 50mm VTA blow-off valve — 60% higher flow than the original TiAL design, rated to 1,800 hp. CNC 6061 aluminum body, V-band mount, Viton seal, Nomex-reinforced diaphragm. Bolts to any standard TiAL flange. Includes V-band clamp, weld flange & air fitting.
The TiAL Sport Q is the latest-generation TiAL blow-off valve — a 50mm (1.98 in) VTA design that bolts straight to any standard TiAL or compatible BOV flange. Upgrade without re-welding your charge pipe.
Through countless hours of R&D, TiAL made the same-size valve flow a staggering 60% more air than the original design — 60% more boost blown off per cycle. The Q is rated to support applications up to 1,800 horsepower, making it one of the highest-quality, most proven VTA blow-off valves available.
Why the TiAL Q
- 50mm valve — large-diameter poppet, high-flow boost release without compressor surge
- CNC-machined 6061 aluminum body — anodized, 5 color finishes
- V-Band mounting — stainless hardware, repeatable clamp-up, easy clocking
- Viton O-ring seal — clamped to prevent sticking, holds high boost reliably
- Teflon-lubricated, hard-anodized stem & guide — consistent actuation, no galling
- Nomex-reinforced high-temp silicone diaphragm — survives underhood heat
- 1,800 hp rated — proven on the highest-output street and race engines
What is in the Box
- TiAL Q BOV assembly
- V-band clamp
- V-band weld flange
- TiAL air fitting (machined aluminum, 10mm hose barb)
- High-pressure O-ring
Spring selection: The actuation spring sets the vacuum threshold at which the valve opens. For supercharged or low-vacuum setups, run a softer spring to keep the valve from creeping open at idle. Choose your spring pressure above, or call us to spec the exact pressure for your combination.
Universal fitment. The V-band weld flange welds to your charge piping — fits any turbo or supercharged application.
Builds Running This Part (1)
Real installs, real reviews — from FFP customers running this part.
2 reviews for TiAL 50mm Q Blow Off Valve
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Anonymous (verified owner) –
high quality materials and vibrant color