Go Fast Bits GFB5702 9328022009377
Go Fast Bits GFB5702 9328022009377
Go Fast Bits GFB5702 9328022009377
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GFB Whistling Trumpet (suits all valves)

GFB5702
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 5702 can be used in place of the standard trumpet on all GFB valves, and will make the whistling sound more readily than the 5701 (high boost and RPM is required to get the whistle from a 5701), and at a slightly higher pitch.? Like the 5701 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.