Go Fast Bits GFB5701 9328022009230
Go Fast Bits GFB5701 9328022009230
Go Fast Bits GFB5701 9328022009230
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GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)

GFB5701
Vendor
Go Fast Bits
Regular price
$36.86
Sale price
$36.86
Regular price
$40.95
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Unit price
per 
Shipping calculated at checkout.

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.