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Columbia River K400BXP Ken Onion Ripple 2 Frame Lock, 2.7" Plain Acuto Steel Blade, Blue Handles

Customer Reviews 4.333 Read 3 reviewsWrite a Review
Part Number: CRK400BXP
Manufacturer: Columbia River (CRKT)
Retail Price: $125.00
Our Price: $79.95
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Description
CRK400BXP: Ripple 2
Columbia River Knife & Tool

He's back. He's here. Ken Onion Ripple.

In their first collaboration, Ken Onion and CRKT introduce their Ripple series of folding frame locks with premium stainless steel build and a stiction-free IKBS ball-bearing pivot.

Columbia River Knife & Tool and noted knife designer Ken Onion are proud to introduce their first collaboration together, the Ripple folding knife series.

This knife is noteworthy for its exceptional manufacturing quality, premium stainless steel build, plus an almost unbelievable silky smooth and fast opening action thanks to the use of the IKBS internal knife ball bearing system.

The modified drop point blade has a high hollow grind, swedged top edge, a high satin finish and Razor-Sharp cutting edge. Steel is premium Acuto, stainless, noted for its high chromium and molybdenum content and hardness of 59-60 HRC. It is instantly opened by pressing the blade flipper with either hand. For safety while closed, the blade has a ball detent.

Even the best conventional blade pivot bearings have some degree of friction which resists initial movement, or “stiction.” In contrast, the Ripple blade opening action is almost friction-free due to the IKBS ball bearing system. This innovative and simple design places eight uncaged ball bearings on each side of the blade pivot in races which are machined into the stainless steel handle. It is compact and adjustable at the blade pivot screw if ever needed. Not only is opening and closing exceptionally smooth, the IKBS system is durable and requires little maintenance, and yields a folder with great rigidity and no blade play.

This Ripple KX400 models are frame lock open build knives with stainless steel frames. In typical Ken Onion attention to detail, the frame lock does not create an unsightly gap in the right frame, but its cut is neatly integrated into the grip design of the frame, which is CNC machined with a complex ‘ripple’ textured pattern plus 44 small lightening holes.

The Ripple K400KXP receives a blue titanium nitride coating, which we then hand buff to give a pocket worn look, that is to lightly reveal the underlying stainless steel on the high points. The Ripple K400BXP achieves the same effect, but with a dark ultramarine blue titanium nitride finish.

Both models feature a removable stainless steel mirror polished pocket clip, high-mounted, and also with small CNC-drilled holes.

This knife combines brilliant design, custom knife quality, and advanced manufacturing technology.
Specifications
  • KX405KXP: High Satin blade finish with Blue Titanium Nitride frame coating Pocket Worn, Razor-Sharp Cutting Edge
  • Blade Length: 2.7” (69 mm)
  • Blade Thickness: 0.10” (2,5 mm)
  • Blade Steel: Acuto, 59-60 HRC
  • Handle Material: Titanium Nitride Coated Stainless Steel
  • Handle Length: 3.8” (97 mm)
  • Overall length: 6.5” (165 mm)
  • Locking Mechanism: Frame Lock
  • Weight: 2.3 oz. (65 g)

UPC Code: 794023940008

Frame Lock
Frame Lock
Developed by Chris Reeve, it functions like a liner lock but the lock is comprised of one of the handle scales. It's an extremely strong and easy to manipulate lock.
Pocket Clip
Pocket Clip
Includes a pocket clip for easy accessibility and a more secure carry.
Steel Handles
Steel Handles
Stainless Steel knife handles provide strength and durability while using chromium oxide to create a rust-resistant barrier.
4.333 (3 reviews)
4.3 out of 5 stars
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5 out of 5
John K
Hagerstown Md.
Apr 19, 2014
Pros: Blade Material, Overall Quality, Blade Sharpness
Cons: None
Ken Onion does it again!
The Ken Onion Ripple 2 is the perfect EDC gentleman's carry. It arrived razor sharp, and the deployment of the blade is the sweetest of any knife I have ever owned. I highly recommend this knife, and for the price that the Knife Center is offering it, there is no better valued EDC on the market today. Beyond its utility and ease of carry, this knife is simply beautiful...A modern work of art.
3 out of 5
Tom Pi
Washington State
Apr 10, 2014
Pros: Blade Material, Handle Feel, Blade Sharpness, Handle Material, Weight, Lock Ease of Use, Lock Type
Cons: Overall Quality, Ease of Opening, None
Awesome knife, but...
I use this as an edc. Have owned the older, original version for several years, and loved it because it's solid, light, and dependable (and quick too). So, I thought this upgraded version would be the bomb. The color is great, and it's a solid little guy. I'm happy about the steel upgrade too. It's one issue: the blade detent that holds the blade in place when closed is so big or malformed that it sticks hard in the blade when closed. This makes it nearly impossible, and quite painful to open because of the force needed from finger to flipper. What a disappointing problem. I've sort of fixed this with some careful filing, but will need to disassemble it to really make it right. I like this knife enough that I'm willing to tear it down to make it usable. Still, not the CRKT quality and workmanship that I've come to enjoy. This must have never been opened by a human before coming to my doorstep. That's a corner that no manufacturer should cut.
5 out of 5
23Bigdog
Las Cruces, NM
Jun 14, 2010
Pros: Ease of Opening, Handle Material, Handle Feel, Weight, Lock Ease of Use, Overall Quality
Cons: None
Ultra Smooth Ultra Light
Another of my Daily Carries
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