BLITZ VD POLISHED DUMP VALVE KIT -70144 SUPRA JZA80 ARISTO JZS161

The all-new ribbed main body dissipates heat more effectively and the venturi-shaped funnel creates a sharp dynamic sound.

Venturi Drive dump valves also feature “Dual Drive” for maximum response, a small port for low boost and a larger port for high boost.

Manufactured from die-cast polished aluminum with a brass piston and a rubber diaphragm, meaning they can easily cope with boost pressures up to 1.2 bar with the supplied spring.

There is an alternative hard spring for boost pressures above 1.2bar and also a soft spring available for very low boost applications. (please see DV Spares)

They are also tension adjustable.