Go Fast Bits

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

GFB5701
$65.99 AUD
Price Includes all Duties & Taxes
Shipping from USA warehouse. 2–3 day processing; 7–10 day delivery. Special-order dispatch timing to be confirmed. Bulky or heavy items may require a freight quote.
Only 2 left — selling fast

Product details

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.

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