The Martin Custom Shop 0-18K2 CFM IV marks the 100th anniversary of Martin’s transition from traditional shellac and varnish finishes to the modern lacquer used since 1926. The 0-18K2 CFM IV is built just like the first guitars Martin produced with this finish—featuring a koa top, back, and sides—though this exquisite Custom Shop edition upgrades the material to stunningly flamed and figured koa. Another historical touch is the classic 12-fret "Single-0" body, paired with a retro headstock featuring open-gear tuners, giving the guitar an elegant vintage aesthetic.
Combining Custom Shop build quality, koa tonewood, and the elegant "0" body size with hand-shaped, scalloped Golden Era X-bracing results in a lively guitar that sings with a crisp, focused, and impeccably balanced tone across all six strings. The result is a highly responsive fingerpicking instrument that excels at Delta blues, modern melodic fingerstyle, and everything in between. The slender hardwood neck features a comfortable "Golden Era Modified Low Oval" profile, an ebony fingerboard, and a 1.75" nut width, ensuring the 0-18K2 is equally well-suited for flatpickers and strummers. It also features a traditional rectangular ebony bridge, "Old Style 18" appointments, and Golden Era-style tuners. The body is sealed with a thin Vintage Gloss nitrocellulose lacquer finish, giving the guitar the same classic look as the original 0-18K from 1926.
Body Size: 0
All Solid: True
Top Wood: Koa
Back & Sides Wood: Koa
Finish: Vintage Gloss
Color: Natural
Cutaway: False
Electronics: False
Construction: Dovetail
Body Bracing: Golden Era X-bracing
Bracing: Scalloped
Neck Material: Select hardwood
Neck Profile: Golden Era Modified Low Oval – High-Performance Taper
Radius: 16"
Fingerboard Material: Ebony
Fingerboard Inlay: Old Style 18
Number of Frets: 20
PLEK Treated: True
Scale Length: 24.9" (632.46 mm)
Nut Width: 1.75" (44.45 mm)
Nut Material: Bone
Saddle Material: Bone
Bridge Material: Ebony
Tuning Machines: Golden Age Relic Brass
Strings: C.F. Martin MA540T Authentic Acoustic Lifespan® 2.0 Light (.012 – .054) 92/8 Phosphor Bronze
Case/Gig Bag: Hardshell Case