Extrema Ratio Knives

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Folding knife Extrema Ratio BD2 Contractor Black 9.4cm 04.1000.0229/BLK
Extrema Ratio BD2 Contractor is a double-edged semi-serrated fully black folding knife with guard. In addition to protecting the users's hands, the guard also acts as a flipper, and the high-speed auxiliary knife opening system makes it easy to use. The BD2 Contractor perfectly combines the functionality of an everyday pocket knife with the elegance of classic Italian style. The streamlined blade is made of Böhler N690 cobalt steel, and the ergonomic handle uses anodized aluminum alloy.
€158.06

In stock

Rescue knife Extrema Ratio Ferrum Rescue Red 5.6cm 04.1000.0365/SW/RED
Ferrum Rescue Red is a product designed for intensive use, developed in collaboration with Andrea Micheli. The handle is made of anodized anti-corrosion aluminum. The first serrated blade allows it to cut through larger ropes or fabrics, while the smooth edge acts like a real knife. The second blade is a scalpel that can be used to make very precise cuts and perform emergency procedures. The third and smallest one, located on the back of the main blade, is a cord cutter that can also be used to cut aramid paracord. Locking mechanism - LinerLock. The model has a reversible clip.
€233.87

In stock

Fixed blade Knife Extrema Ratio Dobermann IV Classic 18.5cm 04.1000.0184/SAT
DOBERMANN IV evolved from the first and most classic Extrema Ratio knife, the K1 DOBERMANN. Over the years, the DOBERMANN has undergone significant change in look and design to meet evolving consumer expectations and ever-changing trends, while at its core retaining consistency with the original 1997 design. This last iteration, too, excels at structural durability and flexibility of use: perhaps our most versatile knife, the DOBERMANN IV is suitable for hunting, outdoors survival, camping, defense, up to and encompassing military use. There are only best fixed blade knives in MyGoodKnife's range.
€362.90

In stock

Fixed blade Knife Extrema Ratio Contact C Ranger Green 12.8cm 04.1000.0216/GRN
Compact and elegant version of the CONTACT, the Extrema Ratio Contact C Ranger Green 04.1000.0216/GRN has a Böhler N690 stainless steel spearpoint blade, hardened at 58 HRC with single branch handguard and full length fuller for lightness. The Forprene grip is affixed by a threaded tang that makes the knife sturdy and well balanced. The injection molded, impact grade nylon, M.O.L.L.E. compatible scabbard has a dampening system to avoid blade rattle, twin button safety loop and a retention safety disengaged by simple pressure on the trigger-like lever.
€175.81

In stock

Fixed blade Knife Extrema Ratio Contact Ranger Green 16.2cm 04.1000.0215/GRN
Extrema Ratio developed the first knife of a new production line, called CONTACT. The Extrema Ratio Contact Ranger Green 04.1000.0215/GRN has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. It has got a lower guard branch to protect the hand from accidental cuts, upper jumping to improve grip, a concave fuller along the entire length of the blade and a generous thickness blade (6.30mm). The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. The handle is still in forprene . It is no more assembled by the side screws but thanks to the shank in truncated cone-shaped stainless steel that is screwed to the bottom and goes to fit inside a special seat, which makes it solid. In this way the knife is well balanced. The sheath is minimalist; most of the fabric has been cut off; it has got a 2nd level retention system, remembering the style of the model it was inspired by. The main shell is injection-molded in shockproof nylon. The secondary retention system is reversible for ambidextrous users. The blade is guided into the sheath thanks to its cone shape that lends itself well to the rapid insertion and extraction of the blade. To extract the blade, a pressure on the trigger will be sufficient, thus releasing the safety that holds it securely in the sheath. In the horizontal slits of the sheath a system is added, which fixes the blade to avoid shaking noises when it is stored inside. The back side of the nylon sheath is M.O.L.L.E. compatible. 
€222.58

In stock

Fixed blade Knife Extrema Ratio Misericordia Ranger XXV Anniversarium Limited Edition 11.8cm 04.1000.0479/BW
The Misericordia Ranger XXV Anniversarium Limited Edition knife by Extrema Ratio is designed for outdoor use, marked by its outstanding features. The handle is ergonomically crafted from glass fiber reinforced nylon, ensuring maximum durability even in the most demanding conditions. The  spear-shaped blade is made from Böhler N690 steel.The Geotech Camo finish, a unique and innovative laser-engraved pattern by Extrema Ratio, not only contributes to its aesthetics but also showcases the brand's commitment to originality. This particular model, the Misericordia Ranger XXV Anniversarium, is released as a limited edition, with only 400 pieces available. It comes packaged in a weatherproof, dustproof, and shockproof polypropylene case. The comprehensive set includes a Kydex and nylon sheath, a special Extrema Ratio twenty-fifth-anniversary coin, and a limited edition progressive number metal plate. Weight 87 gr.
€280.65

In stock

Fixed blade Knife Extrema Ratio Contact C Wolf Grey 12.8cm 04.1000.0216/WG
 Elegant and compact version of the CONTACT, the Contact C  Wolf Grey 04.1000.0216/WG from  Extrema Ratio has a Böhler N690 stainless steel spearpoint blade, hardened at 58 HRC with single branch handguard and full length fuller for lightness. The Forprene grip is affixed by a threaded tang that makes the knife sturdy and well balanced. The injection molded, impact grade nylon, M.O.L.L.E. compatible scabbard has a dampening system to avoid blade rattle, twin button safety loop and a retention safety disengaged by simple pressure on the trigger-like lever.
€175.81

In stock

Folding knife Extrema Ratio Caimano Nero N.A. 9.3cm 04.1000.0166/BLK
It is the non-automatic version of the tactical knife that Extrema Ratio has supplied to the G.O.I. (Operational Raiders Group) of the Italian Navy. The blade is a 4 mm thick asymmetrical spear point. The serrated part of the edge allows to cut highly-resistant cables and fabrics without losing its sharpening. The bottom part of the handle is designed to enhance the grip for a rapid extraction of the knife from the pocket. It is also equipped with a hard-metal glass breaker. The DLC-coated titanium clip can be positioned in three different angles on both sides allowing to conceal the knife as much as possible inside the pocket.
€258.87

In stock

Fixed blade Knife Extrema Ratio Nimbus Ordinanza 14.1cm 04.1000.0240/BLK-OR
Extrema Ratio Nimbus Ordinanza is a modern version of the Second World War Italian Nimbus assault knife. The black blade 141 mm (5.55 in) is made of Böhler N690 steel. The sturdy black Forprene handle provides a comfortable grip. The total length of the Nimbus Ordinanza combat knife is 263 mm (10.35 in) Kydex sheath included. Weighs 203 g. (7.16 oz)
€308.06

In stock

New
Fixed blade Knife Extrema Ratio Adra Operativa 17.8cm 04.1000.0313/BLK-OP
The “Arditi Distruttori della Regia Aeronautica” (lit. royal air force brave destroyers) were an Italian battalion serving in the North African theater during WW2, and awarded two silver medals of honor. They were tasked with complex sabotage operations against enemy airfields, which they accomplished employing then unprecedented guerrilla tactics. Now the 17° Stormo Incursori (17th Raiders Wing) of the Italian Air Force picks up their glorious heritage as a special force. As a tangible token of continuity, members of the 17th line up and parade carrying combat daggers at their belts, as the Arditi used to carry. This ADRA dagger, with its classic European shape, was designed for and with strong input from the commanders and operatives of the 17th. Thus begins its road of honor and duty. ADRA OPERATIVA is the black oxide-coated version, no logo, calf sheath included.
€408.87

In stock

New
Fixed blade Knife Extrema Ratio Suppressor Ordinanza Gis 17.6cm 04.1000.0312/BLK-O
Extrema Ratio feels honored and deeply grateful toward the G.I.S., the renowned counter-terrorism unit of the Carabinieri (Italian military police), for requesting of us this memorial dagger, issued to commemorate the thirtieth anniversary of the unit. SUPPRESSOR ORDINANZA GIS is black oxide-coated with G.I.S. logo, exactly as issued to GIS operatives. The blade is made of Böhler N690 steel. The weight of this model 302g.
€408.87

In stock

Survival knife Extrema Ratio RAO Avio 11.9cm
RAO AVIO is the survival version chosen by the Italian Air Force to complement the equipment package of Eurofighter Typhoon aircrafts. The sheath holds the knife in open position. The improved survival kit includes: whistle, pocket chain saw, water purifying tabs, compass, copper wire, flint and fire striker, LED light, 2.5 mts paracord and diamond-plate sharpener. The kit is contained in a pocket fastened to the sheath by a MOLLE system.
€372.58

In stock

Folding knife Extrema Ratio BD0 R Black 6cm 04.1000.0459/BLK/SW
 BD0 R Black  from Extrema Ratio is a new knife designed for lightness. It is characterized by a very slim profile with a focus on lightness. The blade is made in Bohler N690 steel hardened to 58 HRC, 2.36” (60mm) long, 0.1” (2.5 mm) thick, with a plain sharpening and a faux edge on the first third of the spine. The blade is deployed by the usual “Razor” tang extension which enables effortless ambidextrous operation. A simple yet sturdy liner lock system holds the blade open. The reversible clip with lightening holes contributes to maintain the weight of the knife to a minimum. With an overall length of 5.7” (165 mm) and a weight of just  52 g the Extrema Ratio BDØ R is an extremely light and slim knife which makes it an ideal EDC choice.
€78.23

In stock

Folding knife Extrema Ratio RAO Avio Black 11.9cm 04.1000.0141/BLK G
RAO Avio Black 04.1000.0141/BLK G Extrema Ratio from  is the survival version chosen by the Italian Air Force to complement the equipment package of Eurofighter Typhoon aircrafts. The improved survival kit includes: whistle, pocket chain saw, water purifying tabs, compass, copper wire, flint and fire striker, LED light, 2.5 mts paracord and diamond-plate sharpener. The sheath holds the knife in open position. The kit is contained in a pocket fastened to the sheath by a MOLLE system.
€401.61

In stock

Folding knife Extrema Ratio BD2 Contractor Desert 9.4cm 04.1000.0229/DW
Extrema Ratio BD2 Contractor is a double-edged semi-serrated desert tan colored folding knife with guard. In addition to protecting the users's hands, the guard also acts as a flipper, and the high-speed auxiliary knife opening system makes it easy to use. The BD2 Contractor perfectly combines the functionality of an everyday pocket knife with the elegance of classic Italian style. The streamlined blade is made of Böhler N690 cobalt steel, and the ergonomic handle uses anodized aluminum alloy.
€134.68

In stock

Folding knife Extrema Ratio Frame Rock Titan Black 7.5cm 04.1000.0456/BLK/TIT
Extrema Ratio Frame Titan Black 04.1000.0456/BLK/TIT is a stylish folder with a titanium handle that offers high strength and at the same time a lightweight construction. The Extrema Ratio Frame Rock is a new knife, based on the design of the Ti-Rock, a successful framelock custom made knife that Extrema Ratio has realized for a renowned Italian distributor. Spear point blade 75 mm is made of high quality Bohler N690 steel, with black DLC treatmet finish. The handle is equipped with a pocket clip. Opening the blade is smooth and easy thanks to the bearings. This mechanism allows the user to adjust the force required to release the blade with the screw. Framelock. The knife weighs about 270 g. Made in Italy. It comes with a special ABS case.
€441.93

In stock

Folding knife Extrema Ratio BD0 R Wolf Grey 6cm 04.1000.0459/WG
Extrema Ratio BD0 R Wolf Grey is a new and elegant knife designed for lightness. With an overall length of 5.7” (165 mm) and a weight of just  52 g the Extrema Ratio BDØ R is an extremely light and slim knife which makes it an ideal EDC choice. It is characterized by a very slim profile with a focus on lightness. The blade is made in Bohler N690 steel hardened to 58 HRC, 2.36” (60mm) long, 0.1” (2.5 mm) thick, with a plain sharpening and a faux edge on the first third of the spine. The blade is deployed by the usual “Razor” tang extension which enables effortless ambidextrous operation. A simple yet sturdy liner lock system holds the blade open. The reversible clip with lightening holes contributes to maintain the weight of the knife to a minimum. 
€79.03

In stock

Folding knife Extrema Ratio BDØ R HCS 6cm 04.1000.0459/HCS
BDØ R HCS 04.1000.0459/HCS from Extrema Ratio is a new knife designed for lightness. It is characterized by a very slim profile with a focus on lightness. The blade is made in Bohler N690 steel hardened to 58 HRC, 2.36” (60mm) long, 0.1” (2.5 mm) thick, with a plain sharpening and a faux edge on the first third of the spine. The blade is deployed by the usual “Razor” tang extension which enables effortless ambidextrous operation. A simple yet sturdy liner lock system holds the blade open. The reversible clip with lightening holes contributes to maintain the weight of the knife to a minimum. With an overall length of 5.7” (165 mm) and a weight of just  52 g the Extrema Ratio BDØ R is an extremely light and slim knife which makes it an ideal EDC choice.
€78.23

In stock

Folding knife Extrema Ratio BD1 R 6cm 04.1000.0459/DW
Extrema Ratio BDØ R Desert 04.1000.0459/DW is a new knife designed for lightness. It is characterized by a very slim profile with a focus on lightness. The blade is made in Bohler N690 steel hardened to 58 HRC, 2.36” (60mm) long, 0.1” (2.5 mm) thick, with a plain sharpening and a faux edge on the first third of the spine. The blade is deployed by the usual “Razor” tang extension which enables effortless ambidextrous operation. A simple yet sturdy liner lock system holds the blade open. The reversible clip with lightening holes contributes to maintain the weight of the knife to a minimum. With an overall length of 5.7” (165 mm) and a weight of just  52 g the Extrema Ratio BDØ R is an extremely light and slim knife which makes it an ideal EDC choice.
€73.39

In stock

Folding knife Extrema Ratio MF2 Black 11.3cm 04.1000.0142/BLK
Tactical knife Extrema Ratio MF2 Black 04.1000.0142/BLK with a blade length of 11.3 cm. Model MF2 features twin guards, making the grip extremely stable and preventing any event of a user’s hand slipping onto the blade. The blade-mounted guard enables quick opening with the index finger. 
€295.97

In stock

Survival knife Extrema Ratio RAO Desert Warfare 11.9cm 04.1000.0141/DW
Tactical knife Extrema Ratio RAO Desert Warfare 04.1000.0141/DW with a blade length of 11.9 cm. In June 2006, the “185° Rgt. Ricognizione e Acquisizione Obiettivi” (Target Acquisition Regiment) airborne “FOLGORE” (185° RAO) entrusted to Extrema Ratio the development of a unique knife fitting the unit’s specific operational duties. This resulted in the RAO: not an oversized folder as much as a compact survival & field knife, with a heavy and dependable blade. Its very reliable locking system, assisted by an extra safety device, effectively turns this folder into a fixed blade knife. The opening and closing is to be performed with both hands in order to minimize the risk of self-inflicted injuries, as the blade, because of its weight, is a veritable guillotine. The extra safe device is a steel pin to be hand-screwed through two holes by the guard section of the massive Anticorodal aluminum handle – its presence between blade and hand also acting as a great psychological boon. The sheath is an essential part of this weapon system: it holds a diamond-plate sharpener and enables user to carry the knife either in open position, held in place by a cord and two clips, or closed, inside the front pocket. The sheath can be attached to tactical vests or common belts, being MOLLE system-compliant.
€345.16

In stock

Folding knife Extrema Ratio RAO II Expeditions 11.9cm 04.1000.0136/EXP
RAO II Expeditions 04.1000.0136/EXP is a tool that, thanks to its structure and despite its compactness, guarantees the same functionality and characteristics of a much bigger and more robust product. It has a desert-coloured handle and sheath as any other model of the Expedition Series. It has a BÖHLER N690 (58HRC) blade steel with MIL-C-13924 burnishing and a superficial stone washed finishing (DARK STONE finishing). Rao II Expeditions has ergonomic handle scales with rounded upper angles, and a drop point blade. It is inspired by the RAO model with tanto blade, which has been employed by the Italian 185° Rgt. Ricognizione e Acquisizione Obiettivi “FOLGORE” (185° RAO). The new Expedition Series folding knife can be easily used for heavy duties also thanks to its extremely sturdy locking mechanism, which is supported by a safety that turns it into a proper fixed blade.There is a threaded steel pin to be hand-screwed through two holes by the guard section of the massive Anticorodal aluminum handle; this was added to guarantee 100% resistance of the locking mechanism due to the heavy use and the violence of the blows caused by the mass of the tool. Maximum safety is guaranteed for the user by screwing the pin in this seat.
€342.74

In stock

MyGoodKnife is official retailer of Extrema Ratio. Located in Prato, Italy, Extrema Ratio has been designing, manufacturing and selling high performance combat knives since 1997 enjoying a reputation for excellence that is unsurpassed in the military and tactical knife industry. Extrema Ratio prides itself in design, material and quality to deliver a high end product that meets the most severe mil-standards. The production based on modern cutting edge technology is combined with traditional craftsmanship and the result is the pinnacle of this synthesis. The Extrema Ratio design team uses the 3D system to design new models and create prototypes. Each knife design is then meticulously inspected and then field tested. At this point the finest materials are chosen for durability, function and beauty. Each knife is then hand assembled and hand finished and inspected by Extrema Ratio team of craftsmen. First class handwork and well-selected material have contributed to form the image of the Extrema Ratio trademark all over the world. Each knife that is manufactured at Extrema Ratio has measured up to the Company rigorous standards for quality and performance. The knives are the result of painstaking research and development. This is an Extrema Ratio hallmark. Extrema Ratio knives represent a real, solid value for the money.