Precision Turbo & Engine (PTE) has designed, engineered, and manufactured the all-new PTE 50mm Blow Off Valve (BOV). Features/benefits of the all new 50mm Blow Off Valve include:
-Machined from lightweight 6061 and 7075 aluminum
-Anodized black for great looks and protection from the elements
-Low-resistance rolling diaphragm for maximum response
-Includes 3 aluminum spacers for maximum adjustability
-Includes aluminum mounting flange
-Includes air fitting and crush washers for a leak-free installation

The PTE 50mm Blow Off Valve is designed to be a direct fit replacement for other units on the market such as Tial Q BOV 

Pictures are of actual stock. 
IN STOCK and ready to ship out. Ships SAME DAY when ordered before cutoff.