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

Name: GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)
Brand: Go Fast Bits
SKU: GFB5701
Price: 40.49 USD
Availability: InStock

The 5701 can be used in place of the standard trumpet on GFB valves (Part numbers T9003 & T9503), and...

Go Fast Bits Art: GFB5701

$40.49 $44.90

$40.49

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

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.