Martin Custom Shop 0-18K2 CFM IV (161)

A century ago, Martin changed the way its guitars were finished—embracing lacquer and setting a new standard for durability, beauty, and quality. The Custom Shop 0-18K2 CFM IV celebrates that milestone with a vintage gloss finish closely based on what Martin introduced in 1926—capturing the depth, warmth, and luster of those early instruments while reflecting the precision of today’s craft. Built with a striking solid flamed koa body—an homage to the Concert-sized all-koa models that were the first to be sprayed with this lacquer finish—it blends tradition and innovation in every detail. From hand-shaped bracing to time-honored construction, it carries forward the same level of craftsmanship that defined Martin in the early twentieth century—and continues to shape it today. Limited to just 100 instruments, it’s not only a tribute to 100 years of lacquer, but to the enduring artistry beneath it.

Body Size: 0-12 Fret
Top Material: Flamed Koa
Back Material: Flamed Koa
Side Material: Flamed Koa
Top Finish: Vintage Gloss
Back & Side Finish: Vintage Gloss
Body Color: Natural
Construction: Dovetail Neck Joint
Bracing: GE-Scalloped Hand-Shaped X-Brace
Brace Material: Spruce
Brace Size: 1/4"
Binding: Black
Rosette: Old Style 18 Multi-Stripe
Back Purfling: Style 18
Pickguard: None
Scale Length: 24.9"
Neck Material: Select Hardwood
Neck Shape: GE Modified Low Oval
Neck Taper: High-Performance Taper
Neck Finish: Vintage Gloss
Neck Joint Position: 12th Fret
Fingerboard: Ebony
Fingerboard Width at Nut: 1 3/4"
Fingerboard Width at 12th Fret: 2 1/8"
Fingerboard Inlay: Old Style 18, Abalone
Number of Frets: 20
Nut: Bone
Headstock: Slotted with Round Slots and Square Taper
Headplate: Flamed Koa
Headplate Logo: Martin O'ahu Script Overlay
Bridge: Ebony Straight Line, Drop-In Saddle
Bridge String Spacing: 2 5/32"
Saddle: Bone
Bridge Pins: Ebony
Tuners: Golden Age Relic Brass with Cream Buttons
Recommended Strings: Martin Authentic Acoustic Lifespan 2.0 Phosphor Bronze Light
Case: Hardshell Case