Home / Performance / Bo1 Dump Valve View basket “50mm External Wastegate” has been added to your basket. Bo1 Dump ValveR1,254.00 A Universal Atmospheric Dump/ Blow off Valve. 25 in stock Bo1 Dump Valve quantity Buy now Categories: Dump Valves, Performance Tags: Dump Valves, Performance Product ID: 592 Description Description A Universal Atmospheric Dump/ Blow off Valve. Related products 45mm External Wastegate R4,950.00 Buy now Super Sequential Dump Valve R1,800.00 Buy now 50mm External Wastegate R5,980.00 Buy now Subaru Dump Valve (Straight Flange) R1,714.00 Buy now