Spyderco YoJumbo Wharncliffe Folding Knife – CPM SPY27 Steel, Cobalt Blue G-10 Handle

The Spyderco YoJumbo (C253GPCBL) is a powerhouse folding knife built on Michael Janich’s renowned Yojimbo 2 design, scaled up by more than 20 percent and refined for a broader range of hand sizes. At the heart of this knife is a 3.98-inch deeply hollow-ground Wharncliffe blade crafted from Spyderco’s proprietary CPM SPY27 steel — a cobalt-enriched, particle-metallurgy stainless steel exclusive to Spyderco. This premium blade steel delivers an exceptional combination of toughness, edge retention, and corrosion resistance that serious knife users demand.

The blade features Spyderco’s iconic Trademark Round Hole for fast, ambidextrous, one-handed opening — a hallmark of the brand’s commitment to functional design. The open-backed handle is engineered around skeletonized stainless-steel liners that reduce overall weight without compromising structural integrity. These liners support a high-strength Compression Lock mechanism, one of the most reliable and user-friendly locking systems in the folding knife world.

Cobalt-blue coarse peel-ply-textured G-10 scales wrap the handle, giving it an aggressive, secure grip and a striking aesthetic that identifies it as part of Spyderco’s distinctive CPM SPY27 family. A reversible, four-position pocket clip rounds out the package, offering tip-up or tip-down carry on either side of the body for maximum versatility and personal preference.

Whether you’re a tactical knife enthusiast, a competitive martial artist, or an everyday carry purist, the Spyderco YoJumbo is a refined, purpose-built tool that performs at the highest level. Order yours online at Deep Roots Rifle Co for fast shipping, or stop by our store in Eustis, Florida to see our full selection of premium Spyderco knives in person.