Tuner

    Grover Grover 102 Rotomatic Tuners

    Grover's classic sealed-gear Rotomatic tuner on a modern 10mm post, a common upgrade for guitars that already have modern-spec tuner holes.

    19 guitars checked: 12 likely drop-in, 4 needs verification, 3 requires modification.

    For your Gretsch G2622 Streamliner

    Likely drop-in

    Owners consistently report this as a clean drop-in replacement for the stock tuners, no reaming or drilling needed.

    See the full notes below
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    Where to buy

    Andertons

    £129.99

    Checked 29 days ago

    View at Andertons

    Part specs

    Tuner hole size

    10mm

    Confirmed

    Gear ratio

    14:1

    Confirmed

    Mounting pattern

    Single rear mounting screw with a threaded hex peghead bushing.

    Confirmed

    Guitars we've checked

    19 guitars checked: 12 likely drop-in, 4 needs verification, 3 requires modification.

    Epiphone Jimi Hendrix Flying V Left-Handed

    Epiphone

    Jimi Hendrix Flying V Left-Handed

    Likely drop-in

    A direct swap for the stock tuners, no reaming needed. This style of 3-per-side set works the same for left and right-handed guitars.

    Why we say this

    This guitar's tuner holes are confirmed at 10mm, matching the standard modern Grover Rotomatic bore directly. This is a 3-per-side headstock, and standard 3-per-side tuner sets are not manufactured as separate left and right-handed SKUs the way 6-in-line sets are, the same set splits three-and-three regardless of which way the guitar faces.

    Gibson ES-335

    Gibson

    ES-335 2021

    Likely drop-in

    Matches this guitar's confirmed 10mm tuner holes. Your stock tuner brand may vary by year, but the hole size is confirmed either way.

    Why we say this

    This guitar's tuner hole size is confirmed at 10mm, matching this tuner directly. Stock tuner brand varies by production year (Vintage Deluxe, Grover, or Kluson), but hole size is confirmed regardless of which shipped.

    Gibson ES-339

    Gibson

    ES-339 2021

    Likely drop-in

    Matches this guitar's confirmed 10mm tuner holes.

    Why we say this

    This guitar's tuner hole size is confirmed at 10mm, matching this tuner directly.

    Gibson Flying V

    Gibson

    Flying V 2019

    Likely drop-in

    Matches this guitar's confirmed 10mm tuner holes, the same tuner family it already ships with.

    Why we say this

    This guitar's tuner hole size is confirmed at 10mm, matching Gibson's own spec sheet listing Grover Rotomatics as stock.

    Gibson Les Paul Classic

    Gibson

    Les Paul Classic 2023

    Likely drop-in

    A direct swap for the stock tuners, no reaming needed.

    Why we say this

    This guitar's tuner holes are confirmed at 10mm, matching the standard modern Grover Rotomatic bore directly.

    Gibson Les Paul Modern

    Gibson

    Les Paul Modern 2020

    Likely drop-in

    Matches this guitar's confirmed 10mm tuner holes, the same tuner family it already ships with.

    Why we say this

    This guitar's tuner hole size is confirmed at 10mm, matching this tuner directly. This guitar's stock tuners are already a locking Grover Rotomatic, so this is a same-family swap.

    Gibson Les Paul Standard '60s Left-Handed

    Gibson

    Les Paul Standard '60s Left-Handed

    Likely drop-in

    Matches this guitar's confirmed 10mm tuner holes. This headstock has three tuners a side either way, so there is no left or right-handed version to worry about here.

    Why we say this

    This guitar's tuner hole size is confirmed at 10mm, matching this tuner directly. A 3-per-side Gibson-style headstock is symmetric, so individual sealed tuners like this one have no handedness of their own, unlike a 6-in-line headstock where mirrored parts matter.

    Gibson Les Paul Standard 60s

    Gibson

    Les Paul Standard 60s 2023

    Likely drop-in

    Fits the existing 10mm tuner holes on this guitar without any drilling.

    Why we say this

    The 60s reissue specifically (as distinct from the Standard 50s) is consistently reported across multiple sources as shipping with modern Grover-style tuners on 10mm holes with screw-in bushings, confirmed by several My Les Paul Forum threads discussing this reissue by name. Not a genuine source conflict, the earlier hedge here was inaccurate.

    Gibson SG Standard

    Gibson

    SG Standard 2023

    Likely drop-in

    A direct swap for the stock tuners, no reaming needed.

    Why we say this

    This guitar's tuner holes are confirmed at 10mm, matching the standard modern Grover Rotomatic bore directly. Tuner hole size is unrelated to the bridge spacing dispute.

    Gibson SG Standard 61

    Gibson

    SG Standard 61 2023

    Likely drop-in

    Matches the tuner holes already on this guitar. A straightforward tuner upgrade, no reaming needed.

    Why we say this

    This guitar's tuner holes are the modern 10mm Rotomatic-standard size used across current Gibson SG models, matching Grover's 102 line directly.

    Gibson SG Standard Left-Handed

    Gibson

    SG Standard Left-Handed

    Likely drop-in

    A direct swap for the stock tuners, no reaming needed. Unlike 6-in-line tuners, this style of 3-per-side set works the same for left and right-handed guitars.

    Why we say this

    This guitar's tuner holes are confirmed at 10mm, matching the standard modern Grover Rotomatic bore directly. Unlike 6-in-line Fender-style tuner sets, standard 3-per-side Gibson-style tuner sets are not manufactured as separate left and right-handed SKUs, the same six-piece set splits three-and-three regardless of which way the guitar faces.

    Gretsch G2622 Streamliner

    Gretsch

    G2622 Streamliner 2023

    Likely drop-in

    Owners consistently report this as a clean drop-in replacement for the stock tuners, no reaming or drilling needed.

    Why we say this

    Multiple Streamliner owners report the Grover 102-18N dropping in perfectly on the G2622, at the guitar's standard 10mm post holes.

    Gibson Les Paul Traditional

    Gibson

    Les Paul Traditional 2018

    Needs verification

    Likely matches the standard 10mm bore most current Gibsons use, but this guitar's exact hole size hasn't been independently confirmed. Measure before buying.

    Why we say this

    This guitar's exact tuner hole size has not been independently confirmed. Matches the well-corroborated 10mm standard seen across most current Gibson USA models, but not specifically measured on this one.

    Help confirm this fit

    Gibson Les Paul Tribute

    Gibson

    Les Paul Tribute 2021

    Needs verification

    Likely matches the standard 10mm bore most current Gibsons use, but this guitar's exact hole size hasn't been independently confirmed. Measure before buying.

    Why we say this

    This guitar's exact tuner hole size has not been independently confirmed. Matches the well-corroborated 10mm standard seen across most current Gibson USA models, but not specifically measured on this one.

    Help confirm this fit

    Gibson SG Special

    Gibson

    SG Special 2022

    Needs verification

    Likely matches the standard 10mm bore most current Gibsons use, but this guitar's exact hole size hasn't been independently confirmed. Measure before buying.

    Why we say this

    This guitar's exact tuner hole size has not been independently confirmed. Matches the well-corroborated 10mm standard seen across most current Gibson USA models, but not specifically measured on this one.

    Help confirm this fit

    Gibson SG Tribute

    Gibson

    SG Tribute 2021

    Needs verification

    Likely matches the standard 10mm bore most current Gibsons use, but this guitar's exact hole size hasn't been independently confirmed. Measure before buying.

    Why we say this

    This guitar's exact tuner hole size has not been independently confirmed. Matches the well-corroborated 10mm standard seen across most current Gibson USA models, but not specifically measured on this one.

    Help confirm this fit

    Epiphone

    Casino (2023+) 2023

    Requires modification
    Drilling

    Needs the tuner holes reamed out to 10mm before these will fit.

    Why we say this

    Grover Rotomatics use 10mm posts; the Casino ships with vintage-spec holes (measured ~8.3-8.4mm on a related 2021 Casino Coupe, standard Casino not independently measured). This tuner hole size is unaffected by the 2023 bridge hardware change, so the same reaming requirement applies as on the earlier Casino.

    Help confirm this fit

    Gibson Les Paul Standard '50s

    Gibson

    Les Paul Standard '50s 2023

    Requires modification
    Drilling

    These need larger tuner holes than this guitar has stock. Expect the holes to be reamed out for a proper fit, not a straight drop-in.

    Why we say this

    Grover's Rotomatic line is built around the modern 10mm bushing standard. This guitar's factory tuner holes are vintage-spec at roughly 8.8mm, so fitting these means reaming the holes out and refitting new bushings.

    Help confirm this fit

    This page has 7 open questions

    If you have fitted any of these to this Grover 102 Rotomatic Tuners, tell us what you found and we'll update the data.