Tial Q BOV 50mm
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Tial Q Blow Off Valve 50mm (BOV)

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Tial Q Blow Off Valve 50mm (BOV)

Tial Sport's new Q Blow Off Valve is a newer version of the original 50mm BOV. Featuring an improved design through countless hours of R&D, Tial was able to increase 60% more flow than the original design. This is now believed to be the highest flowing on the market. Made from 6061 aluminum alloy with a 50.5mm valve and V-band clamp mounting, this new version just got better.


Springs available:

  • Pink                 -11 PSI (-22 in/HG)
  • Un-painted       -10 PSI (-20 in/HG)
  • White               -8 PSI (-16 in/HG)
  • Black                -6 PSI (-12 in/HG)



  • Q BOV Assembly
  • Tial V-band clamp
  • V-band weld flange
  • High pressure O-ring
  • Tial air fitting

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Shipping & Returns

Returns Policy

All returns must be within 30 days of the date of invoice. All returned products must be in original, unopened, & resalable condition, identical to the condition that it was received in, with all original documentation, boxes, etc. All returns are subject to a 25% restocking fee.

There are no returns on used parts, closeouts, or special order items. Special order items include, but are not limited to: Wheels, Body Kits, and any JDM (Japanese Domestic Market) item. All returns must arrive at the Raw Brokerage, Inc. office as listed below within 30 days of the date of your original invoice.

Make sure to insure the product when you ship it back to the Raw Brokerage, Inc. offices. If we receive an item that was damaged, or your package is lost by the Courier, you will receive no credit from Raw Brokerage, Inc. and you must take up the damage claim with the Courier. You assume all responsibility associated with processing an insurance claim with the Courier you select.

All returns must be indicated to Raw Brokerage, Inc. prior to return shipment is posted and approved by a Sales staff member. Upon approval a Return Goods Authorization number will be provided (RGA#).


We can ship to virtually any address in the world. Note that there are restrictions on some products and addresses, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose.