Adjustable Upright Bass Bridges (Multiple Sizes Available)

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  • Adjustable Upright Bass Bridge
  • Adjustable Upright Bass Bridges, photo of extensive stock of various sizes
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Offered here in the most common 3/4 size, as well as for 1/4, 1/2, 7/8 and 4/4 size basses, an adjustable bridge can be a godsend for your Upright Bass. It gives you the ability to vary the action for different styles, lower for jazz styles, where fingerboard buzz is a welcome seasoning, in the middle for general play where you want more note bloom or boom, and higher for bluegrass or rockabilly slap. Of course, adjustable height bridges are also often a necessity to compensate for seasonal changes on some carved instruments. (Did you know that top orchestral players who use solid bridges commonly have a "winter" and "summer" bridge for this reason?)

All of us here at the shop (past and present) have adjustable bridges on all of our basses. I appreciate the ability to fine tune action, especially here in the Northeast, where temperature and humidity can swing pretty wide with the seasons.  And it's nice to be able to raise it for an acoustic bluegrass jam so I can get maximum volume from string bloom room, or lower it for more fingerboard interaction when playing an amplified jazz gig.

Will adding adjusters affect the tone/volume/sound of the bass?

They've done tests with sophisticated, computerized audio analysis equipment; while frequency responses from those tests are able to be measured, unless you happen to be Jamie Sommers, with a bionic ear (I'm really dating myself, here), you're pretty unlikely to sense the very subtle differences. Tonal differences from the quality of the wood or bass setup would be far more apparent, and IMHO, the added adjustability factor overrules any concerns about tonal changes (by far). These bridges are made from quality maple and are tapped and assembled with precision. Compared to the common "stock" fixed bridges on many newer basses, if anything you'll probably get improved tone, because the wood quality is better. You've got no worries, here - and you'll love the flexibility that they add.


Bridge Measurements (approx.)

Size: Bridge feet
center to center
Bridge height
Arch width
(measured in arc)
Thread size
3/4 size: 4 1/16 inches 7 7/16 inches 4 5/8 inches 5/16"x18 SAE
1/4 size: 3 3/4 inches 6 1/2 inches 4 1/2 inches 1/4"x20 SAE
1/2 size: 3 7/8 inches 7 inches 5 inches 1/4"x20 SAE
7/8-4/4 size: 4 3/4 inches 7 7/8 inches 5 1/2 inches 1/4"x20 SAE

3/4 size adjustable bass bridgeThreads up, threads down? The 3/4 size bridges in our current stock are tapped "threads down" - meaning that the threaded portion of the adjuster is in the feet of the bridge, and the solid post spins freely in the body portion of the bridge. The other sized bridges are tapped to be used "threads up," meaning that the bridge body is where the threads are (the solid posts go into the feet.)

These brand new high quality maple bridges have excellent quality, lightweight aluminum adjusters that were precision installed at the bridge maker's shop. We have large, high resolution photos of representative bridges so you can see the detail of the high grade of maple used.

Instructions are included:
I will be glad to include my personal notes with tips on installing a double bass bridge! I am also glad to chat with you via email or on the phone if you have any questions. Installing a bridge isn't brain surgery, but does require careful planning and execution. Do you already have an adjustable or regular bridge that needs to be installed, or do you want to get an idea of the process?? Let me know and I'll send you the instructions via email, no obligation.

3/4 size Adjustable Bridge on my '41 3/4 size Kay
I measured, and this bridge is TOO BIG?
That's to be expected! Double basses have different neck angles, which results in the need for different sized bridges -- you can't buy a bridge "off the shelf" to immediately fit your bass. All bridges require fitting. I include instructions to advise you how to trim the top and feet of the bridge to fit your instrument.

The photo shows a similiarly sized bridge cut a bridge down to just 6" tall to fit a 3/4 size Kay; this specific photo is of a slightly different adjustable bridge I formerly sold.

How can I be sure I have the right size bridge?
If you look or feel inside through the E string f-hole, you will find the Bass Bar; it runs parallel to and below the E string. If you measure from the middle of the bar to the mid-point of the bass and double the measurement, you now know the proper measurement of the bridge's feet when measured from center to center. Choose a replacement bridge in that range (most basses are 3/4 size, approximately four inches from the center point of each foot ) with a height larger than your current bridge.

Will it fit my KAY or ENGELHARDT bass?
Almost all Kay and Engelhardt models were 3/4 size, with just a few exceptions. If you have a Kay or Engelhardt bass that ISN'T a 1/4-size small-bodied model (like the M-3, EM-3, etc.) then you almost definitely have a bass that will use our 3/4 size bridge. (There are a handful of other Kay models that were not 3/4 size, but they're exceedingly rare, and if you have one, you probably already know it.)


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5 Reviews

  • 5
    High Quality

    Posted by Hubtone on Sep 21st 2020

    I believe I've purchased about 3 of these from Gollihur in the past. All great consistent quality with very durable adjusters.

  • 5
    Great Bridge

    Posted by Michael Cairo Raftice on Jul 8th 2020

    I bought one of these to replace the old warped bridge on my 1986 Engelhardt EM-1 and I am very pleased with the outcome. The bridge is excellent quality. My bass sounds great. I would recommend that you have a scrolling saw and a belt sander to make the installation much easier. I had both and it went smoothly. Now all I need is talent.

  • 5
    Thank you so much!

    Posted by Nate B on Oct 28th 2019

    I got the new bridge cut down and set up. Really pleased with the sound of my bass and excited to be playing it. The instructions you provided were a great help and saved me a lot of time and headache.

  • 5
    Never sounded better

    Posted by Jerry H on Oct 23rd 2014

    Hey Bob, Mark and Chris, Just wanted to SHOUT at ya and tell you how satisfied I am with the ADJUSTABLE BRIDGE I ordered from you. I followed your simple instructions and with the help of my wife this bass has NEVER SOUNDED BETTER. I attached an entire sheet of sandpaper to the area and with minimum sanding PRESTO - a great sounding 3/4 Bass. Thanks for a wonderful product and I recommend your products to any person that is sincere about their instruments and the quality of sound.

  • 5
    Great bridge, great help!

    Posted by Billy A on Jul 20th 2013

    Thank you. I am a ham and egg bass player who loves it. Thank you for your help. I purchased an adjustable bridge for my upright. The instructions and advice you offered were invaluable. most places i talked to acted as if "you don't know what you need? Sorry, can't help you." I will shop y'all from now on... Thank you, nice!

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