Guyker Guitar Locking Tuners 3L+3R - Precision 1:18 Gear Ratio

In this review of the Guyker Guitar Locking Tuners 3L+3R, the bottom line is simple: these replacement machine heads are for players who want precise tuning and straightforward installation without major modification. They stand out for a precision 1:18 gear ratio and sealed lubrication that produces smooth, predictable winding and better tuning stability. For owners of ST, TL, SG or LP style guitars with modern 10mm peg holes, these tuners offer a reliable way to upgrade worn or low-quality pegs.

Key Features

• Precision 1:18 gear ratio: the higher ratio gives finer tuning control so users can dial in pitch more accurately than with lower-ratio pegs.
• Sealed lubrication and cast housings: sealed internals reduce maintenance and extend runtime while cast housings add durability.
• Hexagonal knob with 45 degree fixing tag: the shaped button gives a comfortable grip and the fixing tag helps secure the tuner to the headstock.
• Includes mounting hardware: screws, bushings and washers are included so installation is complete without hunting for parts.
• Designed for modern 10mm holes: these fit common contemporary headstocks, especially Strat-style configurations, with minimal modification.

Who It's For

These tuners are best for guitarists who need a practical, value-focused upgrade to improve tuning stability and feel. Hobbyists, gigging players on a budget, and anyone replacing worn machine heads on ST, TL, SG or LP style instruments will appreciate the smoother winding and included hardware.

Players who use rare vintage instruments with nonstandard peg holes or collectors who require period-correct parts should look elsewhere, because these are made for modern 10mm headstock holes and a contemporary fit and finish rather than exact vintage replication.

Pros & Cons

Pros

• Reliable locking mechanism that helps keep strings secure and reduces slippage on many setups.
• Good build quality from cast housings and metal knobs that feel solid and durable.
• Easy to install with included screws, bushings and washers, often fitting without drilling on modern headstocks.

Cons

• The locking feature receives mixed feedback from some users who experienced inconsistent lock performance on a few strings.
• Designed specifically for modern 10mm holes, so fitment is not universal for older or unusual headstocks.

Specifications

Brand	guyker
Gear Ratio	1:18
Configuration	3L + 3R handed
Compatibility	ST TL SG LP style electric and folk or acoustic guitars
Mounting	Includes screws, bushings and washers
Hole Diameter	Designed for modern 10mm headstock peg holes

Our Verdict

These Guyker locking tuners are a practical, cost-effective upgrade for modern guitars that need tighter, smoother tuning control. With a 1:18 gear ratio, sealed internals and included hardware, they deliver clear value for most players, though those with vintage headstocks or exacting locking expectations should verify fit and functionality first.

Frequently Asked Questions

Will these fit my Strat-style guitar?
Yes, they are commonly compatible with Strat-style headstocks and designed for modern 10mm peg holes, but check the parameter drawing before ordering.

Are mounting screws and bushings included?
Yes, the package includes screws, bushings and washers so installation does not require extra parts.

Do the locking tuners always lock reliably?
The lock works on most strings, but a few users reported inconsistent performance on certain strings, so expect mostly good results and test each tuner after installation.