Gotoh SG301-04 MG-T Locking Tuners 3L/3R Gold, (Used)

The Gotoh SG301-04 MG-T Locking Guitar Tuners in Gold are a premium set of Japanese-made machine heads designed to deliver precise tuning adjustment, secure string locking and a beautifully traditional appearance.

Manufactured by Gotoh, one of the most respected names in guitar hardware, these locking tuners combine the company's renowned engineering with the practical benefits of its Magnum Lock-Trad (MG-T) locking system.

Designed for guitars featuring a conventional 3+3 headstock layout, the set comprises six machine heads arranged with three tuners on each side.

The SG301-04 MG-T features a traditional tulip-style button, giving it an elegant appearance particularly suited to Gibson-style guitars, PRS instruments and other electric or steel-string acoustic guitars with a compatible headstock configuration.

The attractive Gold finish makes these tuners particularly appealing for players replacing worn hardware, upgrading a favourite guitar or completing a custom instrument build.

One of their most important features is the rear-operated MG-T locking mechanism.

Rather than relying on multiple wraps of string around the tuning post, each tuner features a small locking thumbscrew on the rear of the housing.

This allows the string to be secured directly within the post, helping reduce excess string movement and making string changes quicker and more convenient.

The SG301 series also features a precise 18:1 gear ratio, allowing smooth, controlled tuning adjustments.

This makes it easier to bring strings accurately up to pitch, particularly during setup, recording and live performance.

The enclosed tuner housings protect the internal gearing, while Gotoh's precision manufacturing provides a reassuring and dependable operating feel.

These tuners are designed for 10mm headstock mounting holes and use a traditional 90-degree fixing screw arrangement.

The MG-T version features a 20mm post length measured to the string hole, making correct installation dimensions an important consideration when selecting them for a particular guitar.

This particular set is presented in Very Good Pre-Owned Condition, showing some cosmetic wear consistent with careful previous ownership.

The tuners come complete with their original box.

For guitarists looking to upgrade their instrument with high-quality locking tuners while retaining a classic appearance, the Gotoh SG301-04 MG-T Gold set is an excellent choice.

At A Glance

Detail	Information
Brand	Gotoh
Model	SG301-04 MG-T
Product Type	Locking Guitar Machine Heads
Finish	Gold
Configuration	3 Left / 3 Right
Locking System	Magnum Lock-Trad
Gear Ratio	18:1
Country of Manufacture	Japan
Condition	Very Good – Pre-Owned
Packaging	Original Box Included

Pre-Owned Condition Report

Very Good Condition

This Gotoh SG301-04 MG-T Locking Tuner Set in Gold is presented in Very Good Pre-Owned Condition, indicating some cosmetic wear consistent with careful previous ownership.

The set features six enclosed machine heads with traditional tulip-style buttons and rear-mounted locking thumbscrews.

The Gold finish provides an attractive appearance suitable for a range of electric and acoustic guitar designs.

Please study the accompanying product photographs carefully for an assessment of the individual cosmetic condition of the tuner housings, buttons, locking mechanisms and finish.

Complete 3L/3R Tuner Configuration

This listing is for a six-piece Gotoh locking tuner set in a three-left, three-right arrangement.

This configuration is intended for suitable guitars with three tuning machines on either side of the headstock.

Original Box Included

The tuners come with their original box, providing convenient packaging for storage and transportation.

What's Included

• Set of Six Gotoh SG301-04 MG-T Gold Locking Tuners

• Original Box

The standard retail set is supplied with mounting hardware, but the presence of individual fixing screws, washers and threaded bushings in this pre-owned example has not been specified.

Key Features

• Gotoh SG301-04 MG-T: Premium locking guitar machine heads.

• Made in Japan: High-quality precision manufacturing.

• Set of Six: Complete 3L/3R configuration.

• Gold Finish: Elegant traditional styling.

• Magnum Lock-Trad System: Secure mechanical string locking.

• Rear Locking Thumbscrews: Straightforward operation.

• 18:1 Gear Ratio: Smooth, accurate tuning adjustment.

• Enclosed Housing Design: Protects the internal gears.

• Traditional Tulip Buttons: Classic guitar hardware appearance.

• Metal Tuner Buttons: Durable construction.

• 10mm Mounting Hole Diameter: Common modern headstock fitting size.

• 20mm String-Post Height: Measured to the string hole.

• 90-Degree Mounting Screw Position: Traditional fixing arrangement.

• Suitable for Electric Guitars: With compatible 3+3 headstocks.

• Suitable for Steel-String Acoustics: Where mounting dimensions match.

• Quicker String Changes: Reduces the need for multiple string wraps.

• Reduced String Slippage: Secure locking mechanism.

• Precise Tuning Control: Particularly useful for fine adjustments.

• Traditional Appearance: A discreet alternative to modern-looking locking hardware.

• Very Good Pre-Owned Condition: Attractive second-hand set.

• Original Box Included: Convenient packaging.

Why You'll Love It

The Gotoh SG301-04 MG-T set provides one of the most practical guitar hardware upgrades without dramatically changing the appearance of the instrument.

Locking tuners are particularly appealing to players who regularly change strings, perform live or simply want a straightforward and dependable tuning system.

The MG-T design makes string installation easy.

Instead of winding several turns around the post, the string is passed through the tuner and secured using the locking thumbscrew.

This helps reduce unnecessary string wraps and makes the restringing process more efficient.

The traditional tulip buttons and attractive Gold finish are equally important.

Many locking tuning machines have a modern, oversized appearance that can look out of place on a vintage-inspired guitar.

The SG301-04 MG-T retains a classic aesthetic, making it an excellent option for guitars with traditional styling.

The smooth 18:1 gearing allows precise adjustment, while the enclosed construction provides the reassuring feel associated with premium Japanese guitar hardware.

For guitarists upgrading conventional tuners, restoring an instrument or assembling a custom build, the Gotoh MG-T system provides an excellent combination of practicality, performance and appearance.

Detailed Features & Benefits

Premium Japanese Manufacturing

Gotoh is renowned for producing high-quality guitar hardware in Japan. Its tuning machines are widely respected for their precision engineering, consistent operation and durable construction. The SG301-04 MG-T reflects this approach, offering a premium hardware upgrade for players who value dependable performance and accurate adjustment.

Magnum Lock-Trad Locking System

The MG-T system, also known as Magnum Lock-Trad, uses a traditional-style locking mechanism operated by a thumbscrew on the rear of each tuner. This allows the string to be clamped securely in the tuning post, reducing the need for multiple string wraps. The design provides the convenience of modern locking hardware while retaining a classic tuner appearance.

Rear-Mounted Locking Thumbscrews

Each tuning machine features an individual rear locking thumbscrew. During restringing, the thumbscrew is loosened, the string is inserted through the post and the mechanism is tightened to secure it. This arrangement is particularly convenient for guitarists who change strings frequently or need to complete restringing quickly.

Precise 18:1 Gear Ratio

The SG301 series features an 18:1 gear ratio, meaning the tuner button makes eighteen rotations for one complete rotation of the string post. This provides fine control over pitch adjustment and allows players to make small tuning corrections with confidence.

Traditional Tulip-Style Buttons

The SG301-04 uses traditional tulip-shaped tuner buttons, providing a classic appearance associated with numerous vintage-inspired electric guitars. Their familiar shape offers a comfortable grip during tuning, while the metal construction complements the premium feel of the machine heads.

Elegant Gold Finish

The Gold finish gives these tuners an attractive, premium appearance. It is particularly well suited to guitars featuring gold bridges, pickup covers, tailpieces and other matching hardware. The finish can also create an attractive contrast on darker headstocks and natural wood instruments.

Enclosed Tuner Construction

The fully enclosed tuner housing protects the internal gearing from everyday exposure. This design contributes to a consistent tuning feel and provides a clean, professional appearance on the back of the headstock.

Three-Left, Three-Right Configuration

This set features three left-hand and three right-hand machine heads, making it suitable for compatible guitars with a conventional 3+3 headstock arrangement. This includes many single-cut and double-cut electric guitar designs, along with selected steel-string acoustic instruments.

Compatible with 10mm Headstock Holes

The SG301-04 MG-T is designed for headstocks with approximately 10mm mounting holes. This is a commonly used modern tuner fitting size, although compatibility also depends on the thickness of the headstock, the fixing screw arrangement and the available space between tuners.

Traditional 90-Degree Screw Position

The tuner housings use a 90-degree mounting screw orientation. This is important when replacing existing tuning machines, as choosing a matching fixing pattern can help avoid unnecessary alterations to the instrument. The existing guitar's hole positions should always be measured before installation.

20mm String-Post Length

The MG-T version features a post length of approximately 20mm to the string hole. Correct post height is important when replacing tuners, as it affects the relationship between the strings, nut and headstock. Players should compare the dimensions with their existing hardware before purchasing.

Faster and Easier Restringing

Locking tuners can significantly simplify string changes. By securing the string directly within the post, they reduce the amount of winding required. This is particularly useful for gigging musicians, guitar technicians and players who frequently change string gauges.

Improved String Security

The mechanical locking system helps minimise unwanted movement of the string around the post. This can contribute to improved tuning consistency, especially when combined with a properly maintained nut, suitable string installation and correctly adjusted guitar hardware.

Suitable for Fixed-Bridge Guitars

The SG301-04 MG-T is particularly appealing for guitars with Tune-O-Matic, stoptail, wraparound and other fixed-bridge designs. Its traditional appearance works well with classic single-cut and set-neck instruments, while the locking mechanism adds modern restringing convenience.

Useful for Tremolo-Equipped Instruments

Locking tuners can also be beneficial on compatible guitars fitted with conventional tremolo systems. By reducing excess string wraps, they help remove one potential source of tuning movement. However, the nut, bridge and tremolo setup remain equally important to overall tuning stability.

Ideal for Custom Builds & Restorations

The Gotoh SG301-04 MG-T is an excellent option for custom guitar projects and hardware upgrades. Its combination of classic styling, premium construction and practical locking technology makes it suitable for players building an instrument or replacing worn tuning machines.

Who Is It For?

Guitarists Upgrading Their Hardware: Premium locking tuners for compatible instruments.

Gibson-Style Guitar Owners: Traditional tulip styling and 3+3 configuration.

PRS Guitar Owners: A possible upgrade where the mounting dimensions match.

Gigging Musicians: Faster string changes and secure locking.

Recording Guitarists: Precise tuning adjustment between takes.

Guitar Technicians: Quality replacement hardware.

Custom Guitar Builders: Japanese-made tuners for new projects.

Vintage-Inspired Guitar Enthusiasts: Modern functionality with traditional appearance.

Players Matching Gold Hardware: Elegant finish for coordinated instrument upgrades.

Applications & Compatibility

The Gotoh SG301-04 MG-T set is designed for compatible electric and steel-string acoustic guitars featuring a three-left, three-right tuner arrangement.

Potential applications include Gibson-style single-cut guitars, PRS-style instruments, selected semi-hollow and hollow-body guitars, and compatible steel-string acoustics.

Compatibility should be determined by measurements rather than the guitar brand alone.

Before installation, check the existing tuner-hole diameter, the mounting screw position, headstock thickness, string-post length and available clearance between adjacent tuners.

The 10mm mounting-hole specification and 90-degree screw position are particularly important.

Even when the headstock uses a 3+3 layout, fitting modifications may be required if the original hardware uses different dimensions.

How It Compares

Gotoh SG301-04 MG-T vs Standard SG301-04

The standard SG301-04 features conventional non-locking string posts, requiring the strings to be secured using traditional winding techniques.

The MG-T version adds a rear-operated locking thumbscrew, making string changes faster and reducing the need for multiple wraps.

Both share the traditional SG301 styling and 18:1 gearing.

Gotoh MG-T vs Gotoh Magnum Lock MG

Gotoh's original Magnum Lock system uses a self-locking arrangement that operates through string tension.

The MG-T version features a more conventional rear thumbscrew that allows the player to lock the string manually.

Players who prefer an immediately recognisable and straightforward locking mechanism may favour the MG-T design.

Gotoh SG301-04 MG-T vs Grover Locking Rotomatics

Grover Locking Rotomatics are another popular premium tuning machine option, offering modern locking functionality and robust construction.

The Gotoh SG301-04 MG-T distinguishes itself through its traditional tulip-style buttons, Japanese manufacture and specific mounting dimensions.

The most suitable option depends on headstock compatibility, appearance and individual preference.

Gotoh SG301-04 MG-T vs Kluson-Style Tuners

Traditional Kluson-style tuning machines often use smaller mounting holes and vintage-style press-fit bushings.

The Gotoh SG301-04 MG-T uses a modern 10mm mounting arrangement and a rear-operated locking mechanism.

Players upgrading vintage-spec instruments should check compatibility carefully before fitting modern sealed tuners.

Gotoh Brand Heritage

Gotoh is one of Japan's best-known manufacturers of guitar and bass hardware, supplying high-quality tuning machines, bridges, tremolo systems and related components.

The company has developed a strong reputation among guitar manufacturers, repair technicians and musicians for its precision engineering and consistent quality.

Gotoh hardware is commonly selected for professional instrument upgrades and custom builds.

The company's Magnum Lock technology provides practical solutions for securing guitar strings, while the MG-T Traditional design offers a familiar rear-operated locking system.

The SG301 Series combines this functionality with classic enclosed machine-head construction and traditional button options.

The SG301-04 MG-T Gold set is particularly appealing to players seeking premium tuning hardware that complements the appearance of a classic electric or acoustic guitar.

Technical Specifications

Specification	Details
Product Type	Locking Guitar Tuning Machines
Brand	Gotoh
Model	SG301-04 MG-T
Manufacturer Finish Code	GG
Finish	Gold
Country of Manufacture	Japan
Number of Tuners	6
Configuration	3 Left / 3 Right
Locking Mechanism	Magnum Lock-Trad (MG-T)
Locking Operation	Rear Thumbscrew
Tuner Housing	Enclosed
Gear Ratio	18:1
Tuner Button Style	04 Tulip
Tuner Button Material	Zinc
Headstock Hole Diameter	10mm
String-Post Length to Hole	20mm
Fixing Screw Orientation	90°
Mounting Arrangement	Threaded Bushing and Rear Fixing Screw
Intended Instruments	Compatible Electric and Steel-String Acoustic Guitars
Condition	Very Good – Pre-Owned
Packaging	Original Box Included

Installation & Fitting Requirements

The Gotoh SG301-04 MG-T tuners are designed for compatible guitars with 10mm headstock mounting holes and a 3L/3R configuration.

Before fitting, compare the tuners with the existing hardware, paying particular attention to the fixing screw location, post height, headstock thickness and overall tuner dimensions.

If the existing guitar has smaller holes or a different mounting pattern, modification may be necessary.

Guitarists who are unsure about compatibility or installation should consult an experienced guitar repair technician.

The MG-T mechanism should be tightened sufficiently to secure each string without applying unnecessary force.

The tuners are entirely mechanical and do not require batteries or any external power source.

Fair Deal Music Expert Verdict

The Gotoh SG301-04 MG-T Locking Tuners in Gold are an excellent upgrade for players who want premium tuning hardware without compromising the traditional appearance of their guitar.

Their Japanese-made construction, precise 18:1 gearing and reliable Magnum Lock-Trad mechanism provide a highly practical combination.

The rear locking thumbscrews make restringing straightforward, while the traditional tulip buttons complement a wide range of classic guitar designs.

The Gold finish also makes this set particularly attractive for instruments featuring matching gold hardware.

For musicians replacing standard tuners or assembling a custom guitar, the SG301-04 MG-T offers a superb balance of functionality and appearance.

This particular set is presented in Very Good Pre-Owned Condition and comes complete with its original box.

Best Suited For: Guitar upgrades, custom builds, guitar restoration and players seeking traditional-style locking machine heads.

Customers Usually Upgrade From: Standard non-locking tuners, basic factory-fitted machine heads and worn original tuning hardware.

Most Commonly Paired With: Compatible Gibson-style guitars, PRS-style instruments, traditional electric guitars and steel-string acoustics.

Our Tip: When restringing, pull the string through the post with minimal slack, secure it using the rear locking thumbscrew and tune to pitch. There is no need to create several wraps around the post.

Showroom Advice: Check the 10mm mounting-hole diameter and 90-degree fixing screw position before purchasing. These details are just as important as the 3+3 configuration when determining whether the tuners will fit your guitar.

Why Buy Pre-Owned From Fair Deal Music?

Buying a pre-owned set of Gotoh SG301-04 MG-T locking tuners from Fair Deal Music provides an opportunity to upgrade your guitar with premium Japanese hardware at an alternative price to purchasing new.

Our team understands the importance of accurate product descriptions, compatibility information and clear details about included accessories.

This particular set is presented in Very Good Pre-Owned Condition and comes with its original box.

Warranty, Returns & Delivery

This is a pre-owned guitar hardware set, with its condition and packaging detailed above.

Applicable warranty and returns arrangements are governed by Fair Deal Music's current terms, with available UK delivery and collection options provided at checkout.

Please check all fitting measurements before installation, particularly if the tuners are intended to replace a different manufacturer's hardware.

Why Buy From Fair Deal Music?

When you buy from Fair Deal Music, you're choosing one of the UK's most established, independent family run music retailers since 1987.

Based in Birmingham, Fair Deal Music specialises in new, used, vintage and collectable guitars, basses, amplifiers, effects pedals, accessories and professional audio equipment.

Our experienced team of musicians provides knowledgeable advice and personal service, helping customers find the right equipment for their needs.

Customers benefit from competitive pricing, UK delivery options, our Birmingham showroom and part-exchange services.

Part Exchange – Trade In. Trade Up. Save More.

Fair Deal Music buys and part-exchanges a wide range of musical equipment, including electric guitars, acoustic guitars, basses, amplifiers and effects pedals.

Your existing equipment could help towards the cost of other instruments and accessories in our collection.

Frequently Asked Questions

What condition are these Gotoh tuners in?

They are presented in Very Good Pre-Owned Condition, indicating some cosmetic wear consistent with careful previous ownership.

Do they come with the original box?

Yes. The original box is included.

How many tuners are included?

Six.

What is the tuner configuration?

Three left and three right, designed for compatible 3+3 headstocks.

What is the exact model?

Gotoh SG301-04 MG-T.

What colour are they?

Gold.

Where are they manufactured?

Japan.

Are these locking tuners?

Yes. They feature Gotoh's Magnum Lock-Trad system.

What does MG-T mean?

Magnum Lock-Trad, Gotoh's traditional-style rear thumbscrew locking mechanism.

How does the locking system work?

The string is inserted through the tuning post and secured using a locking thumbscrew on the rear of the tuner.

Are these the same as Gotoh MG locking tuners?

No. MG-T tuners use rear-operated thumbscrews, whereas the MG system uses a different self-locking mechanism.

What is the gear ratio?

18:1.

What are the tuner buttons made from?

The SG301-04 uses metal tulip-style buttons made from zinc.

Are the tuner housings enclosed?

Yes.

What size mounting holes do they require?

Approximately 10mm.

What is the string-post length?

Approximately 20mm to the string hole.

What is the fixing screw angle?

90 degrees.

Will they fit a Gibson Les Paul?

They may fit certain Gibson Les Paul models, but the mounting-hole dimensions and screw positions must be checked.

Will they fit a PRS guitar?

They may fit compatible PRS models with a 3+3 layout, provided the mounting dimensions match.

Will they fit an acoustic guitar?

Yes, they can be used on compatible steel-string acoustic guitars with the correct headstock configuration and dimensions.

Will they fit a Fender Stratocaster?

Not a conventional six-in-line Stratocaster headstock. This set is intended for a 3+3 configuration.

Do locking tuners improve tuning stability?

They can help reduce string movement around the posts, particularly when compared with poorly installed conventional strings. However, the nut, bridge and overall guitar setup remain important factors.

Do these tuners make string changes easier?

Yes. Their locking mechanism reduces the need for multiple string wraps.

Can they be used with a tremolo bridge?

Yes, on compatible guitars. Correct nut and tremolo setup remain important.

Do they require a battery?

No. They are mechanical tuning machines.

Are mounting screws included?

The manufacturer's standard retail package includes mounting hardware, but the presence of all individual fitting components in this pre-owned set has not been confirmed.

Can I install them myself?

Installation may be straightforward where the mounting dimensions match, but a guitar technician is recommended if any modification is needed.

Are these suitable for a custom guitar build?

Yes. They are an excellent option for compatible custom builds.

Are the buttons replaceable?

Gotoh provides different button styles within its range, although replacement-part compatibility should be verified before purchasing.

How should I clean the Gold finish?

Use a soft, dry microfibre cloth. Avoid abrasive cleaning products that could damage the plated finish.

Are these better than ordinary non-locking tuners?

They provide the additional convenience of mechanical string locking and quicker string changes. The choice depends on the guitar, the player's preferences and the existing hardware.