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GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)

GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)

by Go Fast Bits
Save 10% Save 10%
$44.90
$44.90 - $44.90
$44.90
$40.41
$40.41 - $40.41
$40.41
The 5701 can be used in place of the standard trumpet on GFB valves (Part numbers T9003 & T9503), and will make a whistling sound. However, it is necessary to run the valve so that all (or most) of the air vents through the trumpet ? Respons valves will typically not generate the velocity required to whistle when set to 50/50 venting.