Hey [[contact.first_name]], are your machine heads outdated?

Tune faster and with deadly accuracy!

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UNLOCK THE TRUE POTENTIAL OF YOUR GUITAR

World's Only Calibrated Machine Heads for Electric, Acoustic and Bass.

TUNE FASTER & WITH DEADLY ACCURACY

Quick, easy installation / Satisfaction Guaranteed!

RATIO’s patented gear technology- custom calibrated gears for each string... fine tuning where you need it. Every string has the same smooth feel and response.

RATIO ELECTRIC GUITAR LOCKING & UNLOCKING MACHINE HEADS

*Available on 6 and 7 string

6-IN-LINE RATIO ELECTRIC LOCKING MACHINE HEADS STAGGERED POSTS

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6-IN-LINE RATIO ELECTRIC LOCKING MACHINE HEADS CHROME

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6-IN-LINE RATIO LEFTY ELECTRIC LOCKING MACHINE HEADS

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3+3 RATIO ELECTRIC GUITAR MACHINE HEADS

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3+3 RETRO RATIO MACHINE HEADS

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6-IN-LINE RETRO FENDER STYLE RATIO MACHINE HEADS

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RATIO ACOUSTIC GUITAR LOCKING & UNLOCKING MACHINE HEADS

*Available on 6 and 7 string

3+3 RATIO ACOUSTIC LOCKING GUITAR MACHINE HEADS

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3+3 RATIO ACOUSTIC GUITAR BUTTERBEAN OPEN BACK

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3+3 RATIO ACOUSTIC OPEN BACK TUNERS

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3+3 RATIO ACOUSTIC NON-LOCKING MACHINE HEADS

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3+3 RATIO ACOUSTIC LOCKING GUITAR MACHINE HEADS

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3+3 RATIO ACOUSTIC NON-LOCKING MACHINE HEADS

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RATIO BASS MACHINE HEADS

*Available on 4, 5 and 6 string

4 STRING 4-IN-LINE BASS RATIO Y-STYLE

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5 STRING 2+3 BASS RATIO Y-STYLE BUTTON

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6 STRING 3+3 BASS RATIO Y-STYLE BUTTON

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4 STRING 4-IN-LINE BASS RATIO OPEN BACK CLASSIC CLOVER LEAF BUTTON

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4 STRING 4-IN-LINE BASS RATIO OPEN BACK CLASSIC CLOVER LEAF BUTTON LEFTY

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5 STRING 4+1 BASS RATIO CLASSIC CLOVER LEAF BUTTON

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