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- USA
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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
For Your Every Summer RSVP, with Code: SUMMER15
Description
GFB Whistling Trumpet (suits all valves)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.

Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 793 reviews
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Product Reviews
★★★★★ 4
Not OEM material, doesn’t slide as easily. Feels like it will last longer.
Color: Grey, Color: Grey
Thought it was going to be the same quality as OEM, might last longer but definitely has a different texture.
Fits well.
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Very happy
Color: Grey, Color: Grey
This is a 3d printed part. It fits great, looks excellent, works fantastic. I bought the grey version.
Work the part in carefully, take your time. The seller’s video in the description is very helpful! Great alternative to dropping $100 on a replacement. Excellent value, fast response and shipping..
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Reviewed in the United States on December 6, 2024
★★★★★ 5
Works for E46 M3
Color: Black
Great customer support, fits like it should, is a nice detail that you’ll notice if yours is broken. Looks like OE. This is my first 3D printed part, I hope it’ll last another 20 years. Has lasted almost a year so far!
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Reviewed in the United States on June 18, 2024
★★★★★ 3
Off - color
Color: Black, Color: Black
Flimsy, pretty obviously 3D printed. It's noticeably blue in color, but no one in the front seats will notice.
This is good as an aesthetic bandage fix, but I'll go back to sourcing an OEM piece.
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Reviewed in the United States on September 3, 2024
★★★★★ 1
Poor quality.
Color: Grey
This is a waste of money. No communication from seller. It took super long to receive it and when I got it , it was a big disappointment. This is a junk.
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Reviewed in the United States on April 18, 2026




