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Air and Fuel› Superchargers, Turbochargers and Components

TiAL

Q 50mm Blow-Off Valve

$347.00 $254.95 Save $92.05

SKU: Q50MM-BOV

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$100 Minimum Order
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INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Tial Q 50mm Blow Off Valve is a high-performance component designed for turbo-charged and super-charged applications. It features a 50.5mm valve diameter and is constructed from a 6061 aluminum alloy.

This blow-off valve offers a flow rate 60% greater than the original TiAL BOV, making it the highest flowing option on the market. It supports up to 1,800 horsepower and includes a special spring for supercharged vehicles.
Show original supplier description
The TiAL Q 50mm Blow-Off Valve is engineered to enhance engine performance and longevity in boosted applications. By venting excess boost pressure when the throttle is closed, it prevents compressor surge, eliminates heat soak, and reduces wear on supercharger clutches and gears. This valve is the first revision of TiAL's original BV50, now boasting 60% greater flow capacity, making it the highest flowing 50mm BOV on the market. Constructed from durable 6061 aluminum alloy, the Q Series BOV features a robust 50mm valve and a dedicated valve stem and seal. It is designed for quick actuator response and can support up to 1,800 horsepower. The valve comes with a choice of spring pressures, including a -2 psi spring specifically for supercharged applications, allowing for precise tuning to your vehicle's boost levels. The available spring pressures include -2psi, -6psi, -8psi, -10psi, -11psi, and -12psi. Each unit includes a weld base mounting flange (available in aluminum or mild steel) and a TiAL V-band clamp for secure installation. Stainless steel hardware is available as an option for added reliability. The housing can be anodized in various colors due to the 6061 aluminum construction. The Q BOV bolts directly onto any standard TiAL flange, simplifying upgrades without the need for re-welding. The package includes the Q Assembly, TiAL Vband Clamp, Vband Weld Flange, TiAL Air Fitting, and a High Pressure O-ring. It is proudly made in the USA and comes with a manufacturer's limited warranty.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandTiAL
Part NumberQ50MM-BOV
CategoryAir and Fuel

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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