For 50 years, Métronomie has been your reference for instruments, audiovisual and stage equipment.

Graph Tech  |  SKU: PRL-8521-B7
Information request

Graph Tech - 7 String 4+3 Ratio Electric Locking Machine Heads - Black

Regular price $249.00


This product is not currently available online. Contact us to order this product or for more information.

50 years of expertise

Over 50 years of expertise and an exceptional 4.8 ★ rating on Google. Our reputation is built on your satisfaction. We'll be there for you whenever you need us.

Shipping

Shipping is free for all purchases of $249 or more*

  • Processing: All orders are prepared and shipped within 24 hours (Monday to Friday).

  • Shipping Time: Delivery typically takes 3 to 7 business days. For faster delivery, please select Express Shipping at checkout.

  • *Certain regions and products are excluded from free shipping due to size, weight, or destination.

BEST PRICE GUARANTEE!

If you find the same new, in-stock product offered by an authorized retailer at a lower price, we promise to match that price.

Payment and security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa

Your payment information is handled securely. We do not store or have access to your credit card details.

Description

The PRL-8521 is a right-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that uses a 4 x 3 tuner configuration. Fits many Gibson/Epiphone, PRS-style guitars, and any other guitar with a 4+3 headstock.

A two-pin casing can be used as is, or with Graph Tech's Patented 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
• RATIO® patented gear technology. Calibrated machine heads 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.The gear ratios are balanced to each string, simplifying the tuning process.
• With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.