Go Fast Bits
GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)
$60
Out of stock
Free shipping over $150
Workshop verified
Ships within 48 hours
Lifetime fitment support
Quick Specs
- Brand
- Go Fast Bits
- Type
- Blow Off Valve Accessories
- SKU
- GFB-WHISTLING-TRUMPET-ONLY-FOR-STEALTH-FX-AND-WRX-HYBRID
- Variants
- Single
Verify Fitment
Check if this part fits your vehicle before ordering.
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.