





CRKT 5410 Flavio Ikoma Attaboy Assisted Flipper 2.73" D2
Light as a feather, sharp as a talon. Built to handle whatever the day throws at you, the Attaboy puts everything you need from an everyday carry into an ultra-compact folding knife that weighs just 3.5 ounces. Whether on the job or out exploring the backcountry, it won’t slow you down.
Incorporating designer Flavio Ikoma’s eponymous IKBS ball-bearing pivot system and Ken Onion’s Assisted Opening, the Attaboy glides open quickly and smoothly. The 2.7-inch drop-point blade is made of D2 steel for superb edge retention, while Deadbolt, another Ikoma innovation, holds it safely in place when deployed. Despite the small proportions, the knife offers a strong and secure grip that feels natural in the hand. The hybrid front flipper ensures the blade’s entire cutting edge is available to use without interference, while the choil lets you choke the blade for maximum control.
Built to spend the whole day at your side, the Attaboy uses a glass-reinforced nylon handle that helps it reach its featherweight status. It measures less than 4 inches long when closed and the deep-carry clip lets it ride low in your pocket, where it comfortably fades into the background until it’s needed. Now that’s a job well done.
How Assisted Opening Works
It's held securely closed in your pocket, but initiates the deployment, and partway through the rotation, the blade opens at an impressive speed for a simple, powerful, one-handed opening.
How Deadbolt Works
Steel bolts interlock with the blade when it’s deployed to yield outrageous strength. A prominent button sits at the pivot point for simple, intuitive disengagement without fingers crossing the path of the blade. It's ingenious, safe, and reliable, what more could you ask for?
About Flavio Ikoma
Some kids dream of being a ballplayer. Flavio wanted to be a knife maker. In his adolescence, he worked on knives of the Japanese sword variety in his father's shop. He has gone on to learn metallurgy, to work with Ken Onion, and to become a force for innovation. Flavio brought to market the revolutionary IKBS ball bearing pivot system (with Rick Lala), and evolved the classic locking liner with the ILS safety, exclusively available from CRKT in the No Time Off knives.
Features
- Strong And Simple: The Deadbolt lock provides incredible strength and it's easy to use
- Assisted Opening: Flipper deploys the blade fast
- Superior Performance: D2 blade steel for excellent edge retention
- Smooth Opening: IKBS ball bearing pivot deploys the blade smooth
- Strong And Lightweight: Glass-reinforced nylon handle is durable and lightweight
- Low Profile: Deep carry clip rides low in the pocket
- Blade Length: 2.73" (69.32 mm)
- Closed Length: 3.80" (96.55 mm)
- Overall Length: 6.50" (165.10 mm)
- Blade Material: D2 Tool Steel
- Blade Thickness: 0.13" (3.20 mm)
- Blade Style: Sheepsfoot
- Blade Grind: Flat
- Blade Finish: Stonewash
- Handle Material: Black GRN with Inlay
- Locking Mechanism: Deadbolt Lock
- Pivot Assembly: IKBS Bearings
- Pocket Clip: Tip-Up, Right Carry
- Weight: 3.5 oz. (99.22 g)
- Designer: Flavio Ikoma
- Made in Taiwan
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If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
North River Outdoors offers free shipping for purchases of $99 and over within the United States. We strive to ship in-stock orders within 24-48 hours, often the same day if placed before 5 PM Eastern Time.
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Customer Support
Our expert team is available Monday-Saturday to help with product selection, technical questions, and order support. Call 804-556-1006 or use our contact form.
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FAQ's
Find answers to common questions about shipping, returns, product care, and services. Check our comprehensive FAQ section below.
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Visit Our Store
Located at 2941 River Road W, Goochland, VA 23063. Experience our products in person and take advantage of our knife sharpening and repair services.
Frequently Asked Questions
What are your shipping policies and how fast will my order arrive?
North River Outdoors offers free shipping for purchases of $99 and over within the United States (some oversized items may incur charges). We strive to ship in-stock orders within 24-48 hours, often the same day if placed before 5 PM Eastern Time. Standard free shipping typically arrives via UPS or USPS within 3-6 business days. We currently ship to the USA at this time. You can track your order status by logging into "My Account" on our website.
What is your return and exchange policy?
We offer a 60-day return policy for unopened and unused items, for a 100% refund. Items must be returned in the same (or similar) condition in which they were received. Opened, used, or damaged products, or those not following our return policy, may be subject to a 15% restocking fee. We reserve the right to refuse returns in non-sellable condition. Customers are responsible for return shipping costs.
For Returns? Log into view your Order History and select "Return" to start the process. You can also contact our Store via Email or use our Contact Form to initiate a return.
Do you offer any services like knife sharpening or gear repair?
Yes! We offer a range of services at our Virginia store, including knife sharpening, axe sharpening and rehandling, knife/axe cleaning and conditioning, and waxed canvas bag/pack waxing and conditioning. We also provide laser engraving. Drop-off for services is available Monday-Saturday, with a typical turnaround of 1-2 business days.
How can I ensure I'm buying genuine products and not falling for scam websites?
We understand your concern. To ensure you're buying quality, genuine gear from North River Outdoors, always check the URL to confirm it's www.northriveroutdoors.com. Our website is secure, professional, and features real-time inventory and product reviews. Be wary of "half-off" or "flash deals" on other sites using our logo – these are often scams. We are a reputable USA Outdoor & Knife Store operating since 2012.
Where is your physical store located and what are your hours?
Our physical store, North River Outdoors, is located at 2941 River Road W, Goochland, VA 23063 USA. Our store hours are always kept up-to-date on our website. You can find our contact information, including phone and email, on our "Contact Us" or "Our Store" pages.
Do you offer Classes or Events?
Yes, our Virginia store hosts a variety of hands-on training Classes and Events throughout the year. We invite you to check our website's "Classes & Events" section or our blog for an updated calendar and information on upcoming workshops, like knife forging, carving classes and our popular Axe Throwing Events.


