Fump Bridge-Side Dampener
Fump Bridge-Side Dampener
Fump Bridge-Side Dampener
Fump Bridge-Side Dampener
Fump Bridge-Side Dampener
Fump Bridge-Side Dampener
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Fump Bridge-Side Dampener

Regular price $19.99

Unit price per 

UPC: 700604841480

Palm-muted bass tone. Minus the palm.

Free up your muting palm and discover a new path to the old school. The Fump is a simple muting device that slides over the strings against the bridge of your 4- or 5-string electric bass to instantly recreate that sweet staccato sound - without using your palm!

The Fump was born as a natural step following the wild success of our FretWraps, and from numerous requests from players like you. If you've ever stuffed foam under the strings to try to achieve that coveted "old school" muted or upright tone, then you might give the Fump a try! While we definitely encourage mastering proper palm muting, the Fump simply opens up possibilities to discover new techniques and gives your hands the freedom to "dig in."

A few things to note:

  • Works best when string fingerboard setup has little to no radius
  • Takes only a second to slide on or off, unlike the old cut foam solution
  • Clips onto your strap or music stand when not in use
  • Has no moving parts
  • Can be inserted from top or bottom
  • Requires only a 1" (2.5 cm) of space between pickup and bridge

Fump is a bass string dampener that helps recreate the classic muted bass tones heard on countless vintage recordings.

Think Motown, classic soul, vintage country, old-school rock, reggae, and jazz. Fump gives your bass a warm, punchy "thump" with a shorter note decay that sits beautifully in a mix.

Palm muting sounds great, but it takes technique and consistency. Fump gives you that same vintage-inspired character instantly, so you can focus on playing instead of constantly managing your muting hand.

Any song that calls for a tighter, more staccato bass sound. It's especially popular with players chasing vintage tones or looking for a more controlled low end.

Yes. Fump is designed to work with most electric basses up to a 5-string.

Yes. You can engage or disengage the effect in seconds depending on the song or session.

Not at all. Fump is designed to shape your bass tone near the bridge, while FretWraps help control unwanted string noise near the nut. Many players use both for completely different reasons.

Expected May 2026

Customer Reviews

Based on 46 reviews
54%
(25)
13%
(6)
22%
(10)
4%
(2)
7%
(3)
G
G.A.

Ya tenia uno y lo perdi pero me encanta es increible 100 recomendado

C
Customer
Not Right for Acoustic

Gruv Gear makes solid products. And, I have no problem with the quality.

I no longer play electric bass, but only short-scale acoustic nowadays.

I applied this on my Taylor GS Mini acoustic bass, and it deadens the stings into a buzzy mess. Sounds awful.

I can’t speak to other applications, but it just doesn’t seem to be the right tool for an acoustic bass.

C
Chris F.
Fump Bridge-Side Dampener

The Fump is ok. It doesn't completely mute the strings on my 2017 Fender Precision Pro. Takes a bit of moving around to find the right position, and even then one string will buzz a bit. I like the FretWrap better.

V
Victor L.
Fump Bridge-Side Dampener

A real good Motown tone of James Jameson

L
Luis L.
Fump Bridge-Side Dampener

I saw the same product at musicians friend today for $12.49 plus 15% off free shipping and I paid $20 here with 4th of July discount but of course there’s a shipping cost, not nice at all :(

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