Jackson

    King V KVX2021

    The King V KVX takes Jackson's angular V shape into the budget-friendly X Series.

    12 mods reviewed: 2 drop-in, 8 need verification, 2 need modification.

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    The King V KVX takes Jackson's angular V shape into the budget-friendly X Series. Multiple independent sources, including Jackson's own official product page, consistently confirm this model uses a Floyd Rose Special double-locking tremolo with active EMG 81/85 pickups, not the fixed Tune-O-Matic bridge found on the separate Pro Series King V KVT. As with the Kelly KEX, the X in the model name signals the budget licensed-trem tier, so genuine Floyd Rose 1000 Series parts from Pro Series Jacksons are not interchangeable here.

    Quick facts

    Tailpiece

    None (bridge-integrated, locking trem)

    Scale length

    25.5" (648mm)

    Tuner hole size

    10mm (25/64")

    Nut width

    42.9mm (1.689")

    Not published by Jackson: string spacing and bridge mounting spacing. Measure these before buying a bridge.

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    Bridge

    2 options
    Illustration, photo coming soon

    Floyd Rose Special Tremolo (Right-Handed)

    Likely drop-in

    The genuine factory bridge for this exact guitar, confirmed by Jackson's own product page.

    Why we say this

    Multiple retailer spec sheets and Jackson's own product page confirm this exact guitar ships with a genuine Floyd Rose Special, matching this bridge directly.

    See current price at Amazon

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    Illustration, photo coming soon

    Floyd Rose Original Tremolo (Right-Handed)

    Needs verification

    This is the genuine upgrade path from the Special this guitar ships with, and it mounts on the same studs and footprint. One thing to check first: guitars built around a Special are sometimes routed tighter, and if yours is, the cavity may need a little relief to keep full upward travel on the arm.

    Why we say this

    Floyd Rose's own Swapping Your Floyd Rose guide lists the 6-string Original, Custom Shoppe, 1984, Special, 1000 Series Original and Titanium as sharing the same dimensions and swappable without additional routing, so an Original mounts on the same studs and footprint as the Special this guitar ships with. Tier alone is not a fitment reason here. What holds this back from a clean drop-in is a caveat in that same guide: the Special's string lock screws are shorter than the Original's, and some manufacturers route smaller, tighter cavities on bodies built around a Special, in which case a little more routing is needed to keep upward tremolo travel. Whether Jackson routes tight on this model has not been confirmed either way. Verified against floydrose.com, September 2026.

    Help confirm this fit

    See current price at Amazon

    View at Amazon

    Pickup

    3 options
    Illustration, photo coming soon

    EMG 57/66 Active Humbucker Set (Brushed Metal)

    Likely drop-in

    Uses the same solderless quick-connect wiring as this guitar's stock pickups, so it plugs straight in with no rewiring or new battery box needed.

    Why we say this

    EMG's active pickups share the same solderless quick-connect harness across the line, so this set plugs into the existing wiring and 9V battery setup already in this guitar with no rewiring.

    See current price at Amazon

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    Illustration, photo coming soon

    Fishman Fluence Modern humbucker set

    Needs verification

    Generally plugs into this guitar's existing wiring the same way its stock pickups do, but owners commonly add an extra ground wire to avoid a faint buzz. Worth knowing before you install.

    Why we say this

    Fishman Fluence pickups use the same style of quick-connect main connector as EMG's active line, so they generally plug into an existing EMG-wired guitar like this one without rewiring. Multiple independent owner reports agree the connection works, but also agree Fishman pickups want an added bridge ground wire that EMG wiring does not include by default.

    Help confirm this fit

    £349.00 at Andertons

    View at Andertons
    Illustration, photo coming soon

    Seymour Duncan Distortion Humbucker Set

    Requires modification
    Soldering

    This guitar's stock pickups are active and wired differently from passive ones. Switching to a passive set like this one means a full rewire, not just a pickup swap.

    Why we say this

    This guitar's stock EMG pickups are active and run on a 9V battery with dedicated active wiring. Swapping to a passive pickup set means removing the active wiring and battery setup and rewiring for passive pots and a standard output jack.

    Help confirm this fit

    £226.25 at Northwest Guitars

    Buy direct from Northwest Guitars

    Tuner

    7 options
    Gotoh SG381 Locking Tuners (Magnum Lock-Trad), 6-in-line

    Gotoh SG381 Locking Tuners (Magnum Lock-Trad), 6-in-line

    Needs verification

    Hole size should match, but Jackson's reverse headstock is known for aftermarket tuner screw holes not lining up.

    Why we say this

    Jackson pointed reverse headstock, screw hole alignment not guaranteed.

    Help confirm this fit

    See current price at Amazon

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    Illustration, photo coming soon

    Gotoh SG381 Tuners (Standard, Non-Locking), 6-in-line

    Needs verification

    Hole size should match, but Jackson's reverse headstock is known for aftermarket tuner screw holes not lining up.

    Why we say this

    Jackson pointed reverse headstock, screw hole alignment not guaranteed.

    Help confirm this fit

    See current price at Amazon

    View at Amazon
    Illustration, photo coming soon

    Graph Tech Ratio Machine Heads (6-in-line, Staggered)

    Needs verification

    Hole size should match, but this guitar has a pointed reverse headstock. Confirm the correct InvisoMatch plate variant before ordering.

    Why we say this

    Jackson pointed reverse headstock, screw hole alignment not guaranteed even with an adapter plate unless the correct variant is used.

    Help confirm this fit

    See current price at Amazon

    View at Amazon
    Illustration, photo coming soon

    Hipshot Grip-Lock Enclosed Locking Tuners, 10mm post (6-in-line, Staggered)

    Needs verification

    Hole size should match, but Jackson's reverse headstock is known for aftermarket tuner screw holes not lining up with the factory ones. Worth checking before ordering.

    Why we say this

    Jackson's pointed reverse headstock. Real owner reports specifically describe aftermarket locking tuner screw holes not lining up with the factory pilot holes on this headstock style even when post diameter matches.

    Help confirm this fit

    See current price at Amazon

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    Illustration, photo coming soon

    Schaller M6 Locking Tuners, 6-in-line

    Needs verification

    Hole size should match, but Jackson's reverse headstock is known for aftermarket tuner screw holes not lining up.

    Why we say this

    Jackson pointed reverse headstock, screw hole alignment not guaranteed.

    Help confirm this fit

    See current price at Reverb

    View at Reverb
    Illustration, photo coming soon

    Sperzel Trim-Lok Locking Tuners (6-in-line, Staggered)

    Needs verification

    Hole size should match, but Jackson's reverse headstock is known for aftermarket tuner screw holes not lining up.

    Why we say this

    Jackson pointed reverse headstock, screw hole alignment not guaranteed.

    Help confirm this fit

    Gotoh SD91-05M Magnum Lock

    Gotoh SD91-05M Magnum Lock

    Requires modification

    This tuner is sized for vintage tuner holes, not the modern holes on this guitar. You'll need Gotoh's conversion bushings, sold separately, to fit it.

    Why we say this

    This tuner is vintage-hole spec (8.73 to 8.8mm), not the modern 10mm hole this guitar actually has. Gotoh sells conversion bushings separately for exactly this situation. Not a direct swap, but not a drilling job either, it is a bushing change.

    Help confirm this fit

    This page has 10 open questions

    If you have fitted any of these to this Jackson King V KVX, tell us what you found and we'll update the data.