Guitar Monkey Bass machine heads

✔ Buttons: Slinky Metal

✔ Gear ratio: 20:1 

✔ Lightweight: Only 56g per tuner (including mounting hardware)

✔ Closed design: maintenance-free (no oiling necessary)

✔ Screw tab: 90 degrees

✔ Bore headstock: 13.8mm - 14mm

✔ Incl. mounting hardware: screws, washers and sleeves

✔ Incl. quality card: quality check of each individual tuner

To our bass machine heads

5 good reasons for our bass mechanics

20:1 gear ratio

The 20:1 gear ratio guarantees precise tuning of your bass.

Lightweight and compact design

Our bass mechanics are characterized by their compact design and low weight. Due to their closed design, they are insensitive to dirt and remain maintenance-free (no oiling necessary).

Suitable for almost all basses

The majority of all basses have 90 degree screw holes for the bass tuners, which is why our bass tuners fit a variety of basses. Of course, you can also drill new holes if your bass has different screw holes.

Find out more about the technical data of our bass mechanics here.

All variations

We offer our Monkey Locks in sets for 4, 5, 6 and 7 string basses. Likewise for all possible arrangements of the bass mechanics on the headstock. With us you are guaranteed to find what you are looking for - for each of your basses!

quality and packaging

Every single bass mechanism is finally checked before shipping and the result is recorded on our quality card!

Likewise, for us, the most sustainable packaging is the one that can be reused, which is why we only use our premium Doypacks.

Why Guitar Monkey Bass machine heads?

Our Guitar Monkey Bass tuners fit any bass guitar with a 13.8mm to 14mm hole diameter in the headstock and screw tab holes at 90 degrees, although you can of course also drill new screw holes.

Our bass mechanics are characterized by their compact design and low weight. The gear ratio of 20:1 guarantees excellent handling and precise tuning. Tuners with an open design are often susceptible to dirt and wear, but not our bass tuners. Because of the closed design, our bass mechanics are maintenance-free (no oiling required) and are not susceptible to contamination.

  • Click here to get to know our bass mechanics in more detail.
  • Click here to get the technical details.
  • Click here to go to the installation instructions.

We offer our bass machine head sets for all arrangements on the headstock. We therefore offer over 48 different set variants - simply unbeatable and available for every type of bass guitar. This means you don't have to buy your tuners individually; you can find exactly the right set for your bass guitar at Guitar Monkey, regardless of whether it's a 4- or 7-string bass guitar and regardless of the arrangement of the tuners on the headstock!

Our bass mechanics

1 von 12