Graph Tech PRL-8521-B7 4+3 Electric Guitar Locking Machine Heads (Black)
SKU: 25015180005

Graph Tech PRL-8521-B7 4+3 Electric Guitar Locking Machine Heads (Black)

Sale price$103.95 Regular price$115.50
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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Description

Graph Tech PRL-8521-B7 4+3 Electric Guitar Locking Machine Heads (Black)A set of 7 string tuned locking ratio machine heads for electric guitar using a 4x3 configuration. It has a two pin housing that can be used as is or with our patented InvisoMatch mounting plates. 4 different sets of brushed aluminum InvisoMatch mounting plates are included to make installation on most guitars quick and precise using your existing screw mounting holes. Ratio Tuned tuners incorporate different string gauges into the tuning equation.

A set of 7 string tuned locking ratio machine heads for electric guitar using a 4x3 configuration. It has a two-pin housing that can be used as is or with our patented InvisoMatch mounting plates. 4 different sets of brushed aluminum InvisoMatch mounting plates are included to make installation on most guitars quick and precise using your existing screw mounting holes. Ratio – Tuned tuners incorporate different string gauges into the tuning equation. From Low B to High E 48:1, 39:1, 24:1, 20:1, 35:1, 20:1, 12:1. We have balanced the gear ratios of each chain, which simplifies the process adjustment. With Ratio, a half turn is a half step! Each string reacts the same to any tuning adjustment. Predictable and precise tuning, on every string.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 25015180005

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Cj
Natrona Heights, US
★★★★★ 5
Solid cables
Color: Red/Black, Size: 0AWG-25FT Each
Good set of cables
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Reviewed in the United States on April 13, 2026
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Travis Moore
Los Angeles, US
★★★★★ 5
love it
Color: Red/Black, Size: 0AWG-25FT Each
quick and love the product
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Reviewed in the United States on May 26, 2026
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Jerry
Port Orchard, US
★★★★★ 5
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Color: Red/Black, Size: 0AWG-25FT Each
Excelente cable para mi amplificador
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Reviewed in the United States on April 15, 2026
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Grey Ray
Port Orchard, US
★★★★★ 4
Easy to handle, hard to crimp.
Color: Red/Black, Size: 0AWG-25FT Each
This cable is easy to manage (bend, etc) because it has an aluminum core. But for that same reason it is harder to effectively crimp, even with a hydraulic crisper.
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Reviewed in the United States on March 1, 2026
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C
Boise, US
★★★★★ 5
Good quality
Color: Red/Black, Size: 0AWG-25FT Each
Super flexible and good quality for running 2000w inverter.
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Reviewed in the United States on February 10, 2026

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