Kluson's vintage-bushing tuner, built on the traditional 3-per-side layout with a press-in vintage-diameter post.
13 guitars checked: 2 likely drop-in, 2 needs verification, 5 requires modification, 4 not compatible.
Where to buy
Amazon
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Tuner hole size
8.5mm
ConfirmedGear ratio
15:1
ConfirmedMounting pattern
Traditional Kluson two-screw mounting pattern (top and bottom of each tuner) with vintage press-fit bushing.
13 guitars checked: 2 likely drop-in, 2 needs verification, 5 requires modification, 4 not compatible.
Drop-in tuners for the Casino's vintage-spec holes, no drilling needed.
Kluson vintage-bushing tuners consistently reported as no-mod drop-in for Epiphone Casino by retailers and forum users; exact hole size on standard (non-Coupe) Casino not independently confirmed.
Sized for the vintage-style tuner holes already on this guitar. Should drop in without reaming.
Kluson's vintage-hole 3-per-side line matches the roughly 8.8mm press-fit bushing size used on this guitar's factory Vintage Deluxe-style tuners.
Should fit if your Casino has vintage-size tuner holes, which older ones do. We have not confirmed the hole size on 2023 and later models, so check yours (about 8.5mm) before buying.
Retailers list this vintage-style Kluson set as a fit for the Epiphone Casino, but those listings do not specify the 2023 revision. Earlier Casinos have vintage-size tuner holes (about 8.3 to 8.4mm, measured on a 2021 Casino Coupe rather than the standard Casino). No tuner hole measurement has been found for the 2023 and later Casino, whose spec lists Epiphone Vintage Deluxe tuners. If the holes are vintage size this should fit without drilling. If they are a modern 10mm, adapter bushings would be needed. Not confirmed either way.
Help confirm this fit
These are sized for a smaller vintage-style hole than this guitar has stock. You would need separate bushing adapters to take up the gap, not a clean drop-in.
This tuner line is sized for the smaller roughly 8.8mm vintage press-fit hole found on earlier or vintage-spec Gibson models. This guitar's holes are the modern 10mm size, so these would sit loose without bushing adapters sold separately for exactly this mismatch.
Help confirm this fit
These are built for smaller vintage-style tuner holes. This guitar ships with Grover Rotomatics in modern 10mm holes, so these would need conversion bushings to sit properly, not a straight swap.
The stock tuners on this guitar are Grover Rotomatics, which mount in modern 10mm bushing holes. The Kluson SD90SLN is a vintage-style tuner built for the smaller press-in bushing holes of vintage-spec guitars, so fitting it here needs conversion bushings to take up the larger hole.
Help confirm this fit
This guitar's tuner holes are the modern larger size, not the smaller vintage size this tuner is built for. It will sit loose without an adapter.
Guitar's tuner holes are confirmed at 10mm (Guitar Chalk dimensions article), not the vintage-style 8.8mm press-fit holes this Kluson product is built for. Would sit loose without a bushing adapter, not a straightforward swap.
Help confirm this fit
These are sized for smaller, vintage-style tuner holes. This guitar's holes are the larger modern size, so a bushing adapter is needed for a solid fit, not a straight swap.
This guitar's tuner holes are confirmed at 10mm, the modern size, not the smaller 8.5mm vintage bore these Klusons are built for. Installing a smaller-post vintage tuner into a larger modern hole leaves it loose without a bushing adapter to take up the gap.
Help confirm this fit
This guitar's tuner holes are the larger modern size, not the smaller vintage size this tuner is built for. It will sit loose without an adapter, not a straightforward swap.
The 60s reissue specifically ships with modern Grover-style 10mm tuner holes with screw-in bushings, not the vintage-style 8.8mm press-fit holes this product is built for. A vintage-post tuner in an oversized 10mm hole would sit loose rather than seat properly, the reverse of the usual vintage-to-modern reaming problem, and needs a bushing adapter or hole-filling rather than being a simple swap.
Help confirm this fit
These are sized for smaller, vintage-style tuner holes. This guitar's holes are the larger modern size, so a bushing adapter is needed for a solid fit, not a straight swap.
This guitar's tuner holes are confirmed at 10mm, the modern size, not the smaller 8.5mm vintage bore these Klusons are built for. Installing a smaller-post vintage tuner into a larger modern hole leaves it loose without a bushing adapter.
Help confirm this fit
Fender
This is a three-a-side set, and this guitar has all six tuners in a line on one side of the headstock, so the layout is wrong. The Kluson Deluxe 6-in-line set is the matching vintage-style option.
The Kluson SD90SLN set is arranged three per side for Gibson-style headstocks. This guitar has a Fender-style 6-in-line headstock, so a 3+3 set cannot fit regardless of hole size. The Kluson Deluxe 6-in-line set matches both the layout and the vintage hole size.
What fits instead
Fender
This is a three-a-side set, and this guitar has all six tuners in a line on one side of the headstock, so the layout is wrong. The Kluson Deluxe 6-in-line set is the matching vintage-style option.
The Kluson SD90SLN set is arranged three per side for Gibson-style headstocks. This guitar has a Fender-style 6-in-line headstock, so a 3+3 set cannot fit regardless of hole size. The Kluson Deluxe 6-in-line set matches both the layout and the vintage hole size.
What fits instead
Squier
This is a three-a-side set, and this guitar has all six tuners in a line on one side of the headstock, so the layout is wrong. The Kluson Deluxe 6-in-line set is the matching vintage-style option.
The Kluson SD90SLN set is arranged three per side for Gibson-style headstocks. This guitar has a Fender-style 6-in-line headstock, so a 3+3 set cannot fit regardless of hole size. The Kluson Deluxe 6-in-line set matches both the layout and the vintage hole size.
What fits instead
Squier
This is a three-a-side set, and this guitar has all six tuners in a line on one side of the headstock, so the layout is wrong. The Kluson Deluxe 6-in-line set is the matching vintage-style option.
The Kluson SD90SLN set is arranged three per side for Gibson-style headstocks. This guitar has a Fender-style 6-in-line headstock, so a 3+3 set cannot fit regardless of hole size. The Kluson Deluxe 6-in-line set matches both the layout and the vintage hole size.
What fits instead
If you have fitted any of these to this Kluson 3-Per-Side Vintage Tuners (SD90SLN), tell us what you found and we'll update the data.
