Home / GraphTech RATIO Bass Guitar 4-in-Line Key Machine Heads ~ Black

GraphTech RATIO Bass Guitar 4-in-Line Key Machine Heads ~ Black

Unique Gear Ratio: One Turn, One Tone per String
Required Peg Holes Diameter: 35/64" (14mm)
String Post Diameter: 0.547" (13.9mm)
String Post to Hole Length: 1.030" (26.1mm)
Single Machine Head Weight: 1.86oz (53g)
Set of Four Weight: 7.44oz (212g)
String Diameter: Up to 0.98 Gauge
$97.74
$195.48
Quantity
ADD TO CART
BUY IT NOW
  • Detail

    The PRB-4400 is a right-handed set of RATIO Calibrated Machine Heads for BASS, arranged in a 4-in-line configuration. To achieve higher gear ratios, these machine heads feature a double envelope gear design with hardened steel gears, offering amazingly smooth and robust performance. Each string position has a unique gear ratio, ensuring one turn results in one tone. The required peg holes diameter is 35/64" (14mm), with a string post diameter of 0.547" (13.9mm) and a string post length to string hole of 1.030" (26.1mm). Each machine head weighs 1.86oz (53g), and a set of four weighs 7.44oz (212g). They accommodate strings up to 0.98 gauge (or larger if taper-wound) and include 4 machine heads, mounting screws, and bushings.

  • Customer Reviews
    No comments