Guyker Guitar Locking Tuners 3L+3R 1:21 Ratio - Precision Locking Pegs

In this review the Guyker Guitar Locking Tuners are examined for players who want a durable, stable replacement set for electric, folk or acoustic guitars. The single biggest reason to buy is the combination of a fine 1:21 gear ratio and locking functionality that simplifies string changes and improves tuning stability. The set reviewed is the Imperial style 3 x 3 handed configuration, fitted to modern headstocks with 10mm peg holes, and includes the mounting hardware needed for a straightforward swap.

Key Features

• High gear ratio: The 1:21 gear ratio provides finer tuning increments and more precise pitch adjustment than lower ratio machines.
• Locking mechanism: Built-in locking design keeps strings secure at the post for quicker changes and reduced slippage during play.
• Imperial style button: The Imperial button with sealed housing offers a familiar look and protection for the internal gear mechanism.
• Fit for modern headstocks: Designed for 10mm headstock peg holes, making these tuners a direct fit for many contemporary electric and acoustic guitars.
• Hardware included: Screws, bushings and washers are supplied so installation is possible without sourcing extra parts.
• Durable internals: Heavy duty internal gear construction aims to deliver long service life and consistent tuning.

Who It's For

The Guyker locking tuners suit gigging players, hobbyists, and techs who need reliable tuning stability and faster string changes; the 1:21 ratio helps players who prefer precise micro-adjustment. They are appropriate for owners of modern guitars with 10mm peg holes seeking an Imperial style aesthetic.

Players with vintage instruments or nonstandard headstock hole sizes should check measurements before buying, and those after a different button style or non-locking vintage-accurate machines may want to look elsewhere.

Pros & Cons

Pros

• Solid 1:21 gear ratio that improves fine tuning control.
• Locking posts make string changes faster and reduce slippage on stage.
• Includes screws, bushings and washers for a complete installation.
• Sealed Imperial style housing protects gears and gives a clean finished look.

Cons

• Designed specifically for 10mm peg holes, so older or nonstandard headstocks may require modification.
• The Imperial button shape may not match every instrument's original aesthetic preference.

Specifications

Configuration	3L + 3R handed set
Gear ratio	1:21
Compatible peg hole	Modern 10mm headstock holes
Style	Imperial style button with sealed housing
Mounting hardware	Screws, bushings and washers included
Function	Locking tuning machines with heavy duty internal gear

Our Verdict

The Guyker locking tuners are a practical, value-minded upgrade for players who need improved tuning stability and quicker string changes. With a precise 1:21 ratio, included hardware, and a sealed Imperial housing, they deliver solid reliability for most modern electric and acoustic guitars that accept 10mm pegs.

Frequently Asked Questions

Will these tuners fit my guitar?
They are designed for modern headstocks with 10mm peg holes; confirm hole diameter before purchasing.

Are mounting parts included?
Yes, the set ships with screws, bushings and washers to complete installation.

Do these tuners lock strings?
Yes, they are locking tuning machines with a heavy duty internal gear for secure string retention.