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Benchmade Knives 51 Morpho Bali-Song Butterfly 4.25" Satin D2 Plain Blade, G10 Handles

Customer Reviews 4.680 Read 25 reviewsWrite a Review
Part Number: BM51
Manufacturer: Benchmade Knives
Retail Price: $275.00
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BM51: 51 Morpho Bali-Song

Benchmade Knives raises the bar on Bali once more! A patented liner-sprung latch opens with a squeeze, yet locks open, too. Solid, machined slab construction is built on jeweled ti-liners. Heat-treated kicker pins keep things rockin’ hard and fast, and a practical blade shape is detailed out with a crowned blade spine. Others may get all the press, but Benchmade still owns the glory when it comes to Balis and the 51 proves it. Again.
  • Bali-Song with premium D2 tool steel blade
  • Black G10 handles with anodized Ti liners
  • Movable Ti carry-clip
  • Blade Length: 4.25"
  • Blade Thickness: 0.100"
  • Blade Material: D2 Tool Steel
  • Blade Hardness: 60-62HRC
  • Blade Style: Crown Modified Spear-Point
  • Weight: 3.30oz.
  • Clip: Tip-Up, Blue Anodized Titanium
  • Lock Mechanism: Bali-Song w/ Spring-Latch
  • Overall Length: 9.35"
  • Closed Length: 5.10"
  • Class: Blue
  • Made in USA

UPC Code: 610953133382

Made in USA
Made in USA
This product is USA born and raised.
Pocket Clip
Pocket Clip
Includes a pocket clip for easy accessibility and a more secure carry.
D2 Tool Steel
D2 Tool Steel
This is a high carbon steel that is appropriate for use in hostile environments and is known for edge retention.
G10 Handles
G10 Handles
Formed in a sheet under high pressure by combining fiberglass and an epoxy resin binder. These handles are lightweight and shaped to ensure a solid grip.
4.680 (25 reviews)
4.7 out of 5 stars
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5 out of 5
Mr Awesome Bob
Mar 10, 2014
Pros: Lock Type, Overall Quality, Ease of Opening, Handle Material, Blade Material, Lock Ease of Use, Blade Sharpness, Weight, Sheath, Handle Feel, Pocket Clip, None
Cons: Blade Material, Lock Type, Handle Material, Weight, Blade Sharpness, Sheath, Ease of Opening, Handle Feel, Pocket Clip, Overall Quality, Lock Ease of Use
Great, but everything has its ups and downs
4 out of 5
Will S
Mar 06, 2014
Pros: Overall Quality, Lock Ease of Use, Blade Material, Handle Feel, Ease of Opening, None
Cons: Blade Sharpness, Blade Material, Weight, Pocket Clip
Bring on the mods
I've owned a few butterfly knives, and this one only a few days. But I am far from new to the knife world and have already subjected it to abuse. Quality: Currently due to the pressure from midtech and small production companies, some would criticize this knife as being poorly made due to materials and configuration. Personally I find that the G-10 is very nicely done, not nearly as rough as some would report; but not nearly slick enough to be considered a problem. The anodizing on the Ti scales and clip is beautiful, and the D2 blade is silky and very nicely done. The screws are decently tight, but you should loctite them so that you won't lose one whilst flipping. The zen pins are an interesting feature and make the knife very appealing visually to me anyways. Utility: Now it's currently illegal to carry/own a bail in 43 of the 50 states. But you can check your local laws. Personally I find this knife very useful, the D2 blade is eye bleeding sharp out of the box and holds its edge very well. I wouldn't use it to pry or chisel (as is warned in the warranty) Yes D2 rusts but so doesn't 1095, or any carbon steel oil it or patina it and you'll have no problem. The lightness of the bali is actually an advantage here. You can flip it open rather quickly with ease, and put it away just as quickly. You may notice the latch and the clip are on the same handle, this makes the bite handle a little heavier, which is good and bad. Good for opening simply to use it, but bad for flipping; as I will explain later on. Flipping: I'm not sure how many people who bought this are aware of the current options out there for a decent bali. But neither of benchmade's two lines usually fall into the category of "competition flipper" currently. The 62 being short and heavy, and the 51 being a little on the light side but having decent length and balance. Now I am aware of the other options out there, but the Tachyon 2 Tanto has blade rub on the spacers, and the Alpha Beast was discontinued. I also wasn't willing to dole out 500$+ for an old 4x Benchmade, or a custom that I was going to abuse daily. That being said I'm not trying to dis this knife comparing it to other knives out there. It holds it's own in a lot of ways against anything below it's price. Here are some pros and cons of it while flipping: -This knife is a little light and demands nothing short of perfection during tricks, when you try your first helix you'll know what I mean. -Since the bite handle is heavier than the safe handle a lot of tricks that originate from the bite handle take more "oomph" to get started and keep them going -The zen pins are great and keep the blade from being pinched and halted during flipping, which infamously plagued the Kimura line of balis -The handles are a great length for flipping longer than most production balis below it's price. -The sharpness of the blade is either good or bad depending on who you are. A light knife makes lighter cuts, and a sharp knife makes cleaner cuts. Don't be afraid to tape the blade at first when you're still getting used to it, but don't let it become a crutch. -Finally the latch was one of the selling points for me. It is a modified kind of spring latch built into the liners and on a bushing (WHY THEY DIDN'T USE BUSHINGS AS THE PIVOTS I WILL NEVER KNOW .-.) but it will spring open and stay out of the way, and when you are using it it locks into place! It doesn't fall out of place when you're using it. Looks: This is one sharp looking knife (pun intended) the black G-10 really brings out the bright and clear blues anodizing, and the clipped spear point blade is very classy. It's a very sleek modern looking knife, there is quite a wow factor to anyone watching you flip. Or even watching the knife in your hands. Mods: If you forum crawl often enough then you will realize that for just about every "flaw" named there is a solution. Need more weight? Take some Tungsten putty and smoosh it into the ends. Or order some Titanium handles from a forum maker, they are well done and more than worth it! Need better balance? Take of the latch and clip and file down the ends of that stick up. I love this knife and plan on modding it to exactly what I want (yes this voids the warranty). I would highly recommend that everyone try to find what's best for them, and most importantly. Enjoy your new bali!!!
5 out of 5
Jan 18, 2014
Pros: Overall Quality, Blade Sharpness, Handle Material, Handle Feel, Lock Type, Blade Material, None
Cons: Weight
Amazing flipper
The morpho 51 is everything I wanted as a nice flipper. I was using a Bear and Sons 115, and wore it out in three months so I wanted a nice lifetime worthy model as a replacement. The 51 is a couple of ounces lighter so I had to tork down the handles to slow it down a bit, but as I am getting used to the weight and movement the handles are slowly showing more spin. I highly recommend getting the Benchmade pocket multi-tool also because it has all the torx bits that you will need to properly maintain this knife as well as any others you may own. Great buy! Thanks guys!
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