The Spyderco YoJumbo folding knife (brand part no. C253GPCBL) is Michael Janich’s scaled-up follow-up to the trendsetting Yojimbo 2, built around a dramatic Wharncliffe blade in Spyderco’s proprietary CPM SPY27 steel. Sized more than 20 percent larger than its predecessor, the YoJumbo fits a wider range of hand sizes without giving up the design’s signature cutting geometry. The deeply hollow-ground blade features a fully accessible Trademark Round Hole for fast, ambidextrous, one-handed opening. A skeletonized stainless-steel liner framework backs the high-strength Compression Lock, all wrapped in coarse peel-ply-textured cobalt-blue G-10 scales.

Key Specifications

• The blade is made from CPM SPY27 cobalt-enriched particle-metallurgy stainless steel.
• The blade measures 3.98 inches in length with a hollow-ground Wharncliffe profile.
• The handle scales are cut from coarse peel-ply-textured G-10 in a cobalt-blue finish.
• The locking mechanism is Spyderco’s high-strength Compression Lock.
• Opening is handled through a fully accessible Trademark Round Hole for one-handed deployment.
• The handle liners are skeletonized stainless steel for a lightweight, rigid frame.
• A four-position pocket clip allows tip-up or tip-down carry on either side of the body.

Frequently Asked Questions

Q: What steel does the YoJumbo use?
A: It uses CPM SPY27, a cobalt-enriched stainless steel exclusive to Spyderco known for balanced toughness, edge retention, and corrosion resistance.

Q: Is the YoJumbo ambidextrous?
A: Yes, the Trademark Round Hole and four-position pocket clip both support left- or right-handed, tip-up or tip-down carry.

Q: What lock does the YoJumbo use?
A: It uses Spyderco’s Compression Lock, built on skeletonized stainless-steel liners for a strong, reliable lockup.

Buy the Spyderco YoJumbo CPM SPY27 Wharncliffe Folding Knife

This Spyderco YoJumbo ships fast from our Lubbock, TX gun shop and is a great addition to our pocket knives lineup.