Sale

Go Fast Bits

GFB Whistling Trumpet (suits all valves)

Name: GFB Whistling Trumpet (suits all valves)
Brand: Go Fast Bits
SKU: G004 5702
Price: 40.41 USD
Availability: InStock

$44.90 $40.41 Save $4.49

SKU: G004 5702

In Stock

Ships by Jul 30

Free Shipping

Non-Returnable Item

DIY PRO SHOP

Easy — 1–2 hours

Description

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 Hybrid valves will typically not generate the velocity required to whistle when set to 50/50 venting.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand	Go Fast Bits
Part Number	G004 5702

Videos

Go Fast Bits Respons TMS BOV with Trumpet. Fully Adjustable Blow of Valve

GFB BOV Whistling Trumpet VS Stock Trumpet

GFB Blow off valve whistle trumpet

Subaru Wrx GFB Bov Install | Whistle Trumpet!!

Sound Compilation WHISTLING TRUMPET

GFB BOV lb trumpet

Subaru GFB Respons BOV Trumpet Comparison

STi GFB BOV w/ Whistling Trumpet

GFB Spring Pre-load Adjustment

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy