Gotoh SG301 'Grover Style' Locking Tuners set of 6 - 3 a Side Extra Long - Chrome
Gotoh SG301 'Grover Style' Locking Tuners set of 6 - 3 a Side Extra Long - Chrome - Image 2

Gotoh SG301 ‘Grover Style’ Locking Tuners set of 6 – 3 a Side Extra Long – Chrome

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Original price was: $139.00.Current price is: $124.00.

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Gotoh SG301 MGT Locking Tuning Keys — 3 a Side, Grover Rotomatic Replacement, Chrome (SG301-MGT-CHROME)

The Gotoh SG301 MGT (SG301-MGT-CHROME) is a set of six locking tuning keys in a 3-a-side configuration with chrome finish — and a direct drop-in replacement for Grover 102 Series Rotomatic tuners. Built in Japan to Gotoh's precision engineering standards, the SG301 MGT features an 18:1 gear ratio, traditional thumbwheel Magnum Lock mechanism, Gotoh 01 button, XL long posts accommodating headstock thickness up to 17mm, and a 10mm shaft hole requirement matching the Grover 102 Rotomatic footprint exactly. Includes screw-in bushings, washers and fixing screws. Chrome is the most widely specified finish across the SG301 MGT range — the correct choice for Gibson SG, ES-335, ES-339 and Les Paul models fitted with chrome or nickel hardware, and the standard hardware finish on the majority of production Gibson instruments. Before ordering, verify your headstock's existing bushing hole diameter (must be 10mm) and confirm base plate dimensions against the technical diagram provided.

Angkor Music — Chrome, Black or Gold? Matching Hardware Finish on Gibson-Format Instruments

The SG301 MGT is available in three finishes — chrome (this product), pure black (SG301MGT-003) and gold (SG301-MGT-GOLD) — and the correct choice is determined entirely by your guitar's existing hardware finish. Chrome is the standard hardware finish on most Gibson SG models, ES-335, ES-339 and many Les Paul variants — if your bridge, tailpiece and control hardware are silver in colour, chrome tuners are the correct match. On Les Paul Standard, Custom and Traditional models with gold bridge, tailpiece, pickup rings and hardware, gold tuners are correct — the SG301-MGT-GOLD is that product. On custom or modified instruments specifically built with black hardware throughout, the pure black SG301MGT-003 is correct. A hardware finish mismatch on a high-value instrument draws attention immediately — getting the finish right is as important as getting the specifications right. The functional performance of all three finishes is identical: same 18:1 ratio, same MGT thumbwheel locking mechanism, same XL posts, same Grover 102 drop-in compatibility. The decision is purely aesthetic. If you are unsure which finish your guitar has — chrome and nickel look similar but are slightly different — contact us before ordering and we can confirm from your instrument's make and model.

Finish Selection — All Three SG301 MGT Variants

Finish SKU Best For Typical Instruments
Chrome SG301-MGT-CHROME (this product) Chrome / nickel hardware SG, ES-335, ES-339, many Les Paul variants with chrome or nickel hardware
Pure Black SG301MGT-003 Black hardware Instruments with full black hardware specification
Gold SG301-MGT-GOLD Gold hardware Les Paul Standard, Custom, Traditional with gold bridge and tailpiece

Direct Grover 102 Rotomatic Replacement — No Drilling Required

The SG301 MGT matches the Grover 102 Series Rotomatic's 10mm bushing hole and base plate screw spacing exactly — making it a direct drop-in replacement on any headstock currently fitted with Grover 102 Rotomatics. Remove the existing Grovers, install the Gotoh SG301 MGT, no modification to the headstock required. This is the most direct upgrade path from standard Rotomatic performance to locking tuner performance available for Gibson-format instruments.

MGT Thumbwheel Locking — Traditional Appearance, Locking Performance

The MGT (Magnum Lock Traditional) thumbwheel locking mechanism is invisible from the front of the headstock — the SG301 MGT looks identical to a standard Rotomatic in playing position. The thumbwheel on the back of each tuner locks the string in position after normal winding: feed the string through the post, wind normally, tune to pitch, tighten the thumbwheel. No change to stringing technique, no need to cut strings short, no visual change to the headstock. Locking performance — string stability, resistance to post slippage, improved tuning retention — is added without altering the instrument's appearance.

XL Long Posts and 18:1 Ratio

XL extended posts accommodate headstock thicknesses up to 17mm — covering the full range of Les Paul, SG and ES-series headstock profiles including heavily lacquered and bound variants where standard-length posts may be insufficient. The 18:1 gear ratio provides finer tuning increments and better stability under string tension than the ratios found on standard Grover 102 Rotomatics — a meaningful performance upgrade alongside the addition of locking capability.

Who Is the SG301-MGT-CHROME For?

  • Gibson SG, ES-335, ES-339 and Les Paul players with chrome or nickel hardware replacing worn Grover 102 Rotomatics
  • Players on any 3-a-side guitar with 10mm bushing holes and chrome hardware wanting locking tuners without headstock modification
  • Players who want locking performance while maintaining the traditional Rotomatic visual appearance
  • Players on thick or heavily lacquered headstocks requiring XL posts for correct tuner seating
  • Players with gold hardware instruments should choose SG301-MGT-GOLD — players with black hardware should choose SG301MGT-003

Specifications

SKU SG301-MGT-CHROME
Brand Gotoh
Model SG301-01 MGT Magnum Lock Traditional
Configuration 3 a Side (set of 6)
Locking Type MGT Thumbwheel — Magnum Lock Traditional
Gear Ratio 18:1
Button Style Gotoh 01 — Classic Rotomatic oval profile
Post Length XL Long — fits headstock thickness up to 17mm maximum
Bushing Hole Required 10mm (13/32")
Grover Replacement Direct drop-in for Grover 102 Series Rotomatic
Finish Chrome
Included Hardware Screw-in bushings, washers and fixing screws
Black Alternative SG301MGT-003 — identical spec, pure black finish
Gold Alternative SG301-MGT-GOLD — identical spec, gold finish
Manufacture Japan

Expert Advice and Installation at Angkor Music

At Angkor Music Melbourne we stock the Gotoh SG301 MGT in chrome, pure black and gold. Contact us with your guitar's make, model and hardware finish to confirm the correct product before ordering. Professional installation is available through our guitar technician.


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Frequently Asked Questions

Is chrome the same as nickel on guitar hardware?
Chrome and nickel are visually similar but not identical — chrome has a slightly brighter, cooler silver tone, while nickel has a slightly warmer, darker silver appearance. On most instruments the difference is subtle but noticeable when viewed side by side. Many production Gibson instruments use nickel hardware — if your existing hardware has a slightly warm silver tone rather than a bright silver, contact us before ordering and we can confirm whether chrome is the correct match or whether a nickel alternative is available.

Will these fit my Gibson SG or ES-335?
Yes — the SG301 MGT is designed as a direct Grover 102 Rotomatic replacement, and the Grover 102 is standard equipment on Gibson SG, ES-335 and ES-339 models. The 10mm bushing hole and base plate screw spacing match the factory Grover 102 footprint, making the SG301 MGT a drop-in replacement on these instruments without modification. Confirm your specific model's current tuner is the Grover 102 Series Rotomatic before ordering — some Gibson variants use different tuner formats.

How does the thumbwheel locking mechanism work?
Wind the string onto the post normally, tune to pitch, then tighten the thumbwheel on the back of the tuner to lock the string in position. The locking mechanism is on the back of the tuner and invisible from the front — the headstock looks identical to a standard Rotomatic-fitted instrument. No change to stringing technique is required and strings do not need to be cut short.

Do I need a guitar technician to install these?
On a headstock currently fitted with Grover 102 Rotomatics, installation is straightforward — the SG301 MGT uses the same holes and screw positions. A screwdriver and a wrench for the bushings is all that is required. If your headstock has different tuners with different bushing hole sizes, professional assessment is recommended before ordering. We offer professional installation through our guitar technician at Angkor Music.


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Additional information

Weight 0.34 kg
type

tuning peg

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