GFB Whistling Trumpet - for Deceptor Pro/Response (+12psi)

GFB's whistling trumpet, as the name suggests, gives off a unique high-pitch whistle sound on gearshift.

It is a direct screw-on replacement for the standard trumpet found on most GFB valves, and is recommended for use where peak boost pressure is above 13psi.

Our products are manufactured in Australia and the company is accredited to ISO 9001, which ensures our products meet stringent quality requirements at all stages of manufacture.