Gotoh GB707 2L/2R Black Tuning Machines for Bassguitars

Drop-In Bass Tuning Machine Upgrade

The Gotoh GB707-2L/2R Black is a sealed bass tuner set built for 4-string electric basses with a 2-left/2-right peghead layout. Each tuner uses a 1:20 gear ratio, so even small turns of the key produce smooth, accurate pitch changes — useful when dialing in the low B or fine-tuning intonation on stage. The enclosed gear housing keeps factory lubrication sealed inside, protecting the mechanism from sweat and dust. With a 14 mm bore and 24 mm post length, this set fits most standard bass headstocks without modification, making it a popular upgrade for Ibanez, Warwick, and many other bass models.

What You Get in the Box

Every set includes four tuners (two left, two right), mounting screws, hex nuts, and threaded hex bushings for installation. At roughly 60 g per tuner, the GB707 adds minimal weight to the headstock while delivering noticeably smoother tuning action than most stock bass hardware.