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GFB Whistling Trumpet (suits all valves)
GFB Whistling Trumpet (suits all valves)
GFB Whistling Trumpet (suits all valves)
GFB Whistling Trumpet (suits all valves)
GFB Whistling Trumpet (suits all valves)
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GFB Whistling Trumpet (suits all valves)

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GFB5702
Blow Off Valve Accessories
  • LotQuantity:1
$56.10 CAD $50.50 CAD
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...
$50.50 CAD
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GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)
GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)
$56.10 CAD $50.50 CAD
GFB Whistling Trumpet (suits all valves)
Description + Fitment
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.
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