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Seasonal Pick Graphtech Ratio Bass Guitar4-in-line Key Machine Heads ~ Chrome Best Choice [UXFkbmpE]

$25.99 $83.99 -69%

GraphTech RATIO Bass Guitar Machine Heads Introducing the GraphTech RATIO Bass Guitar4-in-Line Key Machine Heads, a revolutionary set designed for the discerning bass player. These right-handed machine heads are crafted with precision and innovation,

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GraphTech RATIO Bass Guitar Machine Heads

Introducing the GraphTech RATIO Bass Guitar4-in-Line Key Machine Heads, a revolutionary set designed for the discerning bass player. These right-handed machine heads are crafted with precision and innovation, offering unparalleled performance and durability. The 4-in-line configuration is a first in the world, providing a sleek and efficient setup for your bass guitar.

Unmatched Gear Technology

The PRB-4400 machine heads feature RATIO®'s patented gear technology, which incorporates unique gear ratios for each string position. This groundbreaking design ensures a one-turn-one-tone tuning experience, making the tuning process faster and more accurate. The double envelope gear design with a hardened steel gear delivers an amazing smoothness and super strength, ensuring long-lasting performance. Here are some key features:
  • Unique Gear Ratios: From Low E to G - 36:1, 30:1, 20:1, 18:1.
  • Calibrated for Precision: Simplifies the tuning process with balanced gear ratios for each string.
  • Comprehensive Specifications

    The GraphTech RATIO Bass Guitar4-in-Line Key Machine Heads are designed with the highest quality standards in mind. Each machine head is lightweight, weighing just 1.86oz (53g), and the set of four weighs 7.44oz (212g). The peg holes require a diameter of 35/64" (14mm), and the string post diameter is 0.547" (13.9mm). The string post length to string hole is 1.030” (26.1mm), and the machine heads are compatible with strings up to 0.98 gauge (or larger if taper-wound). The set includes 4 machine heads, mounting screws, and bushings, providing everything you need for a seamless installation. With RATIO®, a half-turn is a semi-tone, ensuring predictable and precise tuning on every string.

    What Our Customers Say

    December 28, 2025

    Absolutely no complaints!

    I am very pleased with this item.

    - Eva H..

    December 28, 2025

    Absolutely no complaints!

    I am so glad I got this item.

    - Clara W..

    December 28, 2025

    Absolutely no complaints!

    A very nice piece of hardware.

    - Nova Y..

    Write a Review

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