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10% Off $199+ With Code: winter
Graph Tech
Graph Tech 7-String Ratio 4+3 Electric Locking Tuning Machine Heads Black 7 String
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Graph Tech 7-String Ratio 4+3 Electric Locking Tuning Machine Heads Black 7 String
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- Free Shipping
- Flexible Financing
- Lowest Price
Open Box:
From $148.43
Overview
Locking Ratio calibrated machine heads for electric guitars that use 4 x 3 tuner configuration.
The Graph Tech 7-string Ratio 4+3 electric guitar locking machine heads incorporate different string gauges into the tuning equation. Graph Tech balanced the gear ratios to each string, simplifying the tuning process. With Ratio, a half turn is a semi-tone. Every string reacts the same to any tuning adjustments, delivering predictable, precise tuning on every string. The Graph Tech PRL-8521 is a right-handed set of locking Ratio calibrated machine heads for electric guitars that use 4 x 3 tuner configuration. It fits many Gibson, Epiphone and PRS-style guitars, and any other guitar with a 4+3 headstock.
It has a two-pin casing that can be used as is, or with Graph Tech’s InvisoMatch mounting plates. Four different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.
It has a two-pin casing that can be used as is, or with Graph Tech’s InvisoMatch mounting plates. Four different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.
Features
- Includes:
- 7 machine heads, mounting screws, and bushings
- 4 complimentary sets of aluminum mounting plates
Order today.
Specs
7-String Ratio 4+3 Electric Locking Tuning Machine Heads Specifications:
- Gear ratio: 48:1, 39:1, 24:1, 20:1, 35:1, 20:1, 12:1
- Peg holes diameter required: 13/32" (10mm)
- String post diameter: 0.236" (6mm)
- String post length to string hole: 0.910" (23mm)
- String diameter up to 72 gauge
Q&A
Questions & Answers
Do you have questions about this product?
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Free Shipping
Learn More
- Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).
- Orders placed before 3 p.m. ET usually ship the same business day.
2-Year Free Warranty on Guitars
Contact Us for Details
Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.
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