Spyderco YoJumbo Folding Knife Cobalt G-10 Handle CPM SPY27 Wharncliffe Blade SPC253GPCBL

Designed for users who need reach, control, and uncompromising cutting authority, the Spyderco YoJumbo Folding Knife Cobalt G-10 Handle CPM SPY27 Wharncliffe Blade takes Michael Janich’s tactical cutting concept and scales it up into a full-size performance platform. Built in the USA and engineered for demanding real-world use, this oversized evolution of the Yojimbo 2 delivers enhanced leverage, extended cutting edge, and refined ergonomics that accommodate a wider range of hand sizes without sacrificing control.

At the core of the YoJumbo is a 3.98" deeply hollow-ground Wharncliffe blade crafted from CPM SPY27, Spyderco’s proprietary cobalt-enriched stainless steel. Developed exclusively for Spyderco, SPY27 is engineered through particle metallurgy to deliver a highly refined balance of toughness, edge retention, and corrosion resistance. The Wharncliffe profile provides a continuous straight cutting edge from tip to heel, making it exceptionally effective for draw cuts, slicing, and precision work where control is critical. With a full 3.98" edge, the blade maximizes usable cutting length while maintaining strength and stability through its .145" thickness.

Deployment is fast, reliable, and fully ambidextrous thanks to Spyderco’s Trademark Round Hole, allowing one-handed opening from either hand under any conditions. The blade locks securely into place via a high-strength Compression Lock mechanism, offering exceptional strength and confidence during heavy cutting tasks while remaining smooth and intuitive to operate.

The handle is built on skeletonized stainless steel liners that reduce weight while providing a rock-solid foundation for hard use. Nested within are cobalt blue G-10 scales with a coarse peel-ply texture that delivers outstanding grip security in both dry and wet conditions. The ergonomic scaling and extended frame design give the YoJumbo a commanding in-hand feel, promoting control during aggressive cutting or precision tasks alike.

Measuring 9.29" overall with a 5.37" closed length and weighing 5.3 ounces, the YoJumbo delivers substantial cutting capability while still maintaining practical carry characteristics for its size class. A four-position pocket clip allows full customization for left or right-side, tip-up or tip-down carry, ensuring adaptability for any user preference or carry style.

Made in the USA, the Spyderco YoJumbo stands as a purpose-driven tactical folding knife that prioritizes reach, control, and cutting power in a refined, highly capable platform built for serious users.

Available at Smoky Mountain Knife Works, a Tennessee landmark and the world’s largest knife store.