Benchmade 51 Morpho Balisong Butterfly Knife G-10 (4.25" Satin)

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Benchmade 51 Morpho Balisong Butterfly Knife G-10 (4.25" Satin)
MSRP: $275.00
Our Price: $233.75
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Item #BHQ-4408


  • Overall Length:9.25"
  • Blade Length:4.25"
  • Cutting Edge:3.75"
  • Blade Thickness:0.10"
  • Blade Material:D2
  • Hardness:60-62 RC
  • Blade Style:Spear Point
  • Blade Grind:Flat
  • Finish:Satin
  • Edge Type:Plain
  • Handle Length:5.00"
  • Handle Thickness:0.48"
  • Handle Material:G-10
  • Color:Black
  • Frame/Liner:Titanium
  • Weight:3.30 oz.
  • User:Right Hand, Left Hand
  • Pocket Clip:Tip-Up
  • Knife Type:Butterfly
  • Lock Type:Spring Latch
  • Brand:Benchmade
  • Model:51
  • Model Number:51
  • Country of Origin:USA
  • Best Use:Recreation
  • Product Type:Knife


Be sure to view our other Benchmade Balisong Butterfly Knives in stock!

The Benchmade Balisong 51 Knife is a larger version of the Benchmade Balisong 32. The 51 Morpho Balisong Butterfly features a premium D2 steel blade with black G10 handles. The hand polished hardware, jeweled blue titanium liners and Ti carry-clip provide the perfect accent to this great Butterfly Knife. BM51

Get a Kydex sheath for the Benchmade 51, click HERE!

Need a Benchmade Balisong Sheath to fit the 51? Pick one up HERE!


Customer Reviews

Write a review for this item
Alex Y.
Just got this knife from BHQ 3 days ago, and I just love it. Flips beautifully, looks gorgeous (already gotten compliments on it), and is RAZOR sharp (already got a small cut cause i'm used to a dull bali). I was worried it would be too light, but it's actually just perfect for me. I may order the titanium scales at some point but right now I'm very happy. Money well spent.

Only con was it didn't come loc-tite'd, but that's hardly an issue. After I noticed one of the pivot screws coming loose, I applied Loc-tite and now it's buttery smooth and has very little to no blade play at all.
Jack H.
I ordered this 4 years ago and it's still working flawlessly. I have taken care of it and it has taken care of me.:)
Feels good man!!
adrian b.
This is my second higher priced butterfly knife and all I can say is that I am glad I bought this. I would recommend this for a beginner flipper.

Pros- Quality, price point, warranty, craftsmanship, light, length.

Cons- pocket clip gets in the way sometimes.
Very Nice
Joshua J.
Only complaints is with both the latch and the clip on the bite handle, make it feel off balanced and like I need to add more force when swinging out the safe handle.
Very good for an entry into higher quality balis
Alex J.
I've had plenty of lower quality cheap balis and after they all broke I decided to save up for this. I was worried about the weight but as I hadn't flipped in a while it didn't affect my flipping. The momentum carries nicer than expected as all the weight is at the end of the handles. The quality makes it worth the price so if you're willing to spend it for this knife i suggest it.
Just an amazing knife.
Nick S.
When you close the latch on this knife it is solid as a rock! The flipping is very smooth but the handles are not as rounded as i thought they'd be. It comes shaving sharp so if you want flip it i would recommend putting tape on the blade. The latch is great but it does rub the anodizing off the safe handle when your closing it. This is a very light bali so be careful. I would definitely recommend this knife
Great knife
John N.
Great Bali! I really love it. Great looking. Great flipping action
Joshua M.
For the cost its a great reliable Bali . The only thing I would change is the handle weight the knife is a little blade heavy when flipping but once you account for it you can manage .
I really love it!
Aldo S.
I'm the type of person that thought I would never spend this much on a knife. I don't regret buying it at all and as matter of fact I will continue to buy this brand and from Bladehq. Their customer service is among the best.
Great knife!
Junior D.
Absolutely love this knife! Its pretty light weighted knife but it'll be fine when i get new scales for it. Highly recommend it for beginners or any balisong enthusiast!
The quality is there but some issues
Morpho f.
First off this is a well built Bali. There not enough weight in my opinion. It came dull and chips in the edge Benchmade fixed there errors by a free sharpening service.
Excellent High-Quality Production Balisong
James T.
The Benchmade 51 Morpho was my first Balisong over $200. I also have a Bradley Kimura for reference, and have handled several other great production balisongs. All in all, the 51 is one of the best, if not the best, production Balisong currently available on the market. The lighter weight takes getting used to if you're used to handling heavier balisongs like the Kimura. If it's your first Balisong, its a great pick. The action is exceptionally smooth, and the fit and finish is Benchmade quality. When you get yours, you may have to give it a quick cleaning after its potentially long storage interval, but otherwise no other maintenance is needed. This is the best price range to maximize quality, without losing a huge chunk of cash, or become disinterested in flipping because it is so expensive. And it is my recommendation for any Balisong flipper or knife enthusiast.
First Balisong.
Gregory A.
Not a huge fan of Bali's but I wanted one to round out my collection and this looked like the best choice for the money as far as a combination of quality and looking nice and boy is it.

Other reviewers dull knife must have been a fluke this knife was hair popping sharp out of the box, probably in the top 5 of factory edges on any knife I have bought including other benchmades, zt's, and spyderco's.

Have been learning to flip since getting it and I can see where the handles lightness might take some getting used to but being a beginner it helps not get fatigued quickly while learning as well and has not posed much of a problem. It also has performed well in actual use cutting down boxes, having a relatively thin and smooth blade profile it slices very well.

Looks gorgeous only complaint would be the anodizing on the liners was a bit faded, probably just by age, out of the box, only noticeable upon close inspection and according to the internet (don't hold me to it I have not done it yet)
wiping the liners down with windex should polish them right back up again and bring out the color, knife is put together with standard torx bit screws and there are videos on how to assemble on youtube so that should not be difficult either. Also the titanium pocket clip looks and functions well making this a viable option for edc if your local law allows it as mine does.
Love it.
Brandon M.
I have been out of the balisong game for years. I learned how to flip with the 42 t latch and spring latch. I deeply regret getting rid of those knives. Anyways, I found that this 51 is an excellent replacement. It is light, but that's not a bad thing because I can literally flip all day without getting fatigued. I love this Bali. Mine came wicked sharp. I use this knife as an EDC. The spring latch works fine with some adjustment. I found that if you loosen the zen pins and then clamp the handles together in the open position. Then tighten the zen screws up, this small adjustment creates the perfect spacing to hold the spring latch secured firmly.
sean f.
Probably the dullest knife I have ever bought. Very dissappionted. Couldn't cut a noodle with this piece of garbage.
Blade HQ response:
Please feel to contact us or Benchmade for a resolution. The situation you're describing is atypical of Benchmade products which are, in general, exceptional.
Has some issues, but otherwise great
Justin Z.
My main problem with this knife is how light it is compared to some other balis. Once I got used to the weight though, this quickly became one of my favorite knives. The anodization gets dull after a few months, but a good cleaning gets it sparkling the most beautiful blue, and it goes great with the black g10 scales.

I originally had a black bladed 51, but had it switched in when i sent it in for warranty a while back. The black coating will rub off pretty quickly if the pivots get loose, and the coating also gets little scratches cutting just about anything. I also wore off the coating on the back of the blade just with my finger, but that took a good year of flipping it almost constantly. I expect the satin blade won't show wear as much as the black blade.

Exactly one year to the day though, the spring latch part of the 51 broke, the liner snapped. I sent it in for warranty, the replaced one of the liners and switched out the black blade for a satin one. Great customer service BM!