Extrema Ratio Knives

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Folding knife Extrema Ratio Panthera Black 04.1000.0135/BLK 10cm
-15%
Folding knife Extrema Ratio Panthera Black 10cm 04.1000.0135/BLK
Extrema Ratio Panthera is a fully black folding knife. This model has absolutely identical characteristics to the T-Razor model, because it is from which Panthera draws inspiration. The difference in this silhouette is that the dorsal part, like in the blades of the Wharncliffe, goes down to the tip of the knife. The Extrema Ratio Panthera features a Razor-called high-speed assisting deployment system, which makes the knife easier to use.
€160.40
€188.71

In stock

Folding knife Extrema Ratio Panthera Satin 04.1000.0135/SAT 10cm
-15%
Folding knife Extrema Ratio Panthera Satin 10cm 04.1000.0135/SAT
Extrema Ratio Panthera is a satin-finished folding knife. The model retains all the characteristics of the T-Razor model, from which Panthera draws inspiration. The difference in this silhouette is that the dorsal part descends to the tip of the knife, similar to Wharncliffe blades. The Extrema Ratio Panthera features a high-speed assisting deployment system called the Razor, which makes the knife easier to use.
€173.43
€204.03

In stock

Folding knife Extrema Ratio Resolza 10 Stone washed 04.1000.0168/SW 10cm
-15%
Folding knife Extrema Ratio Resolza 10 Stone washed 10cm 04.1000.0168/SW
Extrema Ratio Resolza 10 is a folding knife with stonewashed blade that pays homage to centuries of tradition of Italia. The traditional Sardinian resolza is one of the most famous Italian knives. So far it is a constant companion of island farmers and shepherds in their daily work. The knife accompanied them even when people were called to war: during the World War I in the chronicles of Sassari the knife is mentioned as part of equipment of soldiers. Resolza 10 is an attempt to redefine the traditional silhouette in accordance with the modern Extrema Ratio standards, so as not to overlook the Sardinian craftsmen, who still preserve ancient traditions and practice ingrained knife-making techniques. Resolza 10 retains its original dimensions and proportions, but is manufactured using modern company technologies and high quality materials. The handle has been redesigned, and the blade is more closely approximated to the traditional shape.
€126.81
€149.19

In stock

Folding knife Extrema Ratio Resolza 10 Black 04.1000.0168/BLK 10cm
-15%
Folding knife Extrema Ratio Resolza 10 Black 10cm 04.1000.0168/BLK
Extrema Ratio Resolza 10 is a folding knife that pays homage to centuries of Italian tradition. The traditional Sardinian resolza is one of the most famous knives in Italy. To this day, it is a constant companion of island farmers and shepherds in their daily work. The knife accompanied them even when people were called to war: in the chronicles of Sassari during the First World War, the knife is mentioned as part of soldiers' equipment. Resolza 10 is an attempt to redefine the traditional silhouette in accordance with the modern Extrema Ratio standards, so as not to overlook the Sardinian craftsmen, who still practice ingrained knife-making techniques and preserve ancient traditions. Resolza 10 retains its original dimensions and proportions, but is manufactured using high quality materials and modern company technologies. The handle has been redesigned, and the blade is more closely approximated to the traditional shape.
€123.39
€145.16

In stock

Folding knife Extrema Ratio BD4 R Satin 04.1000.0496/SAT 12.2cm
-15%
Folding knife Extrema Ratio BD4 R Satin 12.2cm 04.1000.0496/SAT
Extrema Ratio BD4 R is a basic folding knife with a satin-finished blade. The high-speed auxiliary knife opening system makes it easy to use. The BD4 R perfectly combines the elegance of classic Italian style with the functionality of an EDC folding knife. The streamlined blade is made of Austrian Böhler N690 steel, and the ergonomic handle uses anodized aluminum.
€121.33
€142.74

In stock

Tactical knife Extrema Ratio MK2.1 Black 04.1000.0128/BLK 17.7cm
-15%
Fixed blade Knife Extrema Ratio MK2.1 Black 17.7cm 04.1000.0128/BLK
Extrema Ratio MK2.1 is a re-issue of the Mark 2 combat dagger, one of the most common knives during World War II. The aim was to preserve the characteristic properties of the original, making only those changes that would increase its effectiveness. The blade is made of Böhler N690 cobalt steel, the rest of the parts are made of AISI 303 and AISI 304, and the handle uses fiberglass-reinforced nylon instead of leather. The MK2.1 retains the ergonomics of the original Mark 2, while all of the frame parts have been enlarged to provide a robust, high-performance multi-tool. The most significant changes are aimed at eliminating the known "weak points" of the original knife: the ability to disassemble in the field without the tools, a straightened modified Bowie profile, which makes it easier to maintain the edge, and recesses on the handle that help to correctly orient the blade in the dark and increase the grip during rotational movements. Lanyard hole and front guard holes have also been added. The kit includes a standard hip-mount sheath.
€272.82
€320.97

In stock

Folding karambit knife Extrema Ratio Nightmare Stonewashed 04.1000.0454/SW
-15%
Folding knife Extrema Ratio Nightmare Stonewashed 04.1000.0454/SW
Extrema Ratio Nightmare is a karambit folding knife with rescue characteristics. It has been adopted by the special units of U.S.I.V.P. Principality of Monaco Police. Its name comes from the development and consultancy department of Monaco special intervention units. It comes with a standard industrial-grade cutter blade which is easily replaced, a reversable pocket clip, a glass braker placed in the finger ring. It is produced both in black and stone washed version.
€176.17
€207.26

In stock

Neck knife Extrema Ratio N.K.1 Black 04.1000.0123/BLK 5.1cm
-15%
Fixed blade Knife Extrema Ratio N.K.1 Black 5.1cm 04.1000.0123/BLK
Extrema Ratio N.K.1 Black fixed is a reduced-size knife is based on the skinner and perfected to a true tactical knife. The design of the handle prevents accidental injury while drawing. A groove on the back of the blade accommodates for the user’s index finger or thumb, according to wielding style. Due to its overall construction, the N.K.1 is both capable of offense, through very effective slashing strikes, and useful for minute precision work. Total length 129 mm. Blade length 51 mm. Weight 56 g. The included, rapid- release Kydex sheath comes with a paracord strip for neck carry. Further, it can be attached via MOLLE system to tactical vests or to any of the compatible cordura sheaths from Extrema Ratio. Available but not included: belt clip (for attaching sheath to a belt), polymer under shirt system (for concealed carry). Available versions: N.K.1 Black, N.K.1 Desert Warfare, N.K.1 Stone washed.
€91.85
€108.06

In stock

Survival knife Extrema Ratio Ontos Black No Kit 04.1000.0127/BLK-NK 16.8cm
-15%
Survival knife Extrema Ratio Ontos Black No Kit 16.8cm 04.1000.0127/BLK-NK
Extrema Ratio Ontos Black fixed is a survival tool for all seasons. ONTOS (“the thing” in Greek) is a pure field knife, tough and heavyweight despite its compact size. The serrated segment on the back of the blade is meant as a back-up, never to be caught without a sharp edge ready for use. The MOLLE compatible nylon thigh sheath stays on even in the event of a retreat, when a soldier would drop most of his cumbersome primary equipment. It is possible to buy separately a survival kit to be fixed to knife sheath. Total length 299 mm. Blade length 168mm. Weight 411g. Available versions: ONTOS Black, ONTOS Green. 
€267.34
€314.52

In stock

Folding knife Extrema Ratio MF0 D Black Rough 04.1000.0140/RVB 6.8cm
-15%
Folding knife Extrema Ratio MF0 D Black Rough 6.8cm 04.1000.0140/RVB
Extrema Ratio MF0 D Black Rough folder is “the little one” amongst MF knives. Basically it is a compact version of the MF1. It retains all the characteristics of MF1 but has a downsized handle and shortened blade, similar to our SHRAPNEL “back-up” knife. This versione is produced with a rough handle for a better grip. The drop point blade 68 mm is made of Bohler N690 stainless steel (58HRC). Black aluminum handle. 
MF stands for Medium Folder: a product line positioning itself between the BF (Basic Folder) and the Heavy Folder lines. MF knives employ the LINER-LOCK mechanism and are distinguished for their sturdiness; all are equipped with a glass-breaker. An innovative supplementary screw can be unlocked to enable fine-tuning of the main screw, adjusting opening speed to taste. Hemispheric milling marks on handles make it easier to change from saber-style to reverse grip. Clips are reversible. Overall length 181 mm. Weight 139 g. Made in Italy.
€198.79
€233.87

In stock

Diving knife Extrema Ratio Ultramarine Con Asola 04.1000.0320
-15%
Diving knife Extrema Ratio Ultramarine Con Asola 15cm 04.1000.0320/BLK
Extrema Ratio ULTRAMARINE is an amphibious knife, carried around from underwater operation equipment (diving suit) to ground operation equipment (tactical vest). Can be shipped only inside EU. Two different versatile sheaths were therefore developed for it. The scuba sheath can be worn at the ankle, or its hard ABS section can be attached by two BELT-CLIPS to either the breathing apparatus or BCD belts. The land sheath (OPTIONAL, included on request) is MOLLE system compatible, designed to be attached to the tactical vest and carried inside a waterproof bag during underwater operations. All an operative has to do, if getting rid of his diving suit after landing, is to draw the knife from its ankle sheath and place it in the tactical vest sheath. Primary functions: field operations, underwater operations, emergency tool, survival and combat.
€433.91
€510.48

In stock

Training knife Extrema Ratio TK KS 04.1000.0172-TK 24.1cm
-15%
Training knife Extrema Ratio TK KS 24.1cm 04.1000.0172-TK
Training knife Extrema Ratio kukri KS. Extrema Ratio restyled series of training knives are manufactured in a wide range of models of diverse size and shape. They enable martial arts practitioners and professionals to train different combat techniques with an appropriate and dedicated tool. All training knives are produced in a metallic blue colour which makes them easily identified even when sheathed. The blades are produced from anodized aluminum and have the very same shape and size of the Extrema Ratio standard production models. The handles are the same used in our production models. The sheaths, sold separately, are the same used for the real knives. The stiff blade allows for training complex defensive and disarming techniques. We recommend the use of appropriate protective gear when training.
€39.76
€46.77

In stock

Training knife Extrema Ratio TK BF2 04.1000.0145-TK 8.9cm
-15%
Training knife Extrema Ratio TK BF2 8.9cm 04.1000.0145-TK
Training knife Extrema Ratio BF2. Extrema Ratio restyled series of training knives are manufactured in a wide range of models of diverse size and shape. They enable martial arts practitioners and professionals to train different combat techniques with an appropriate and dedicated tool. All training knives are produced in a metallic blue colour which makes them easily identified even when sheathed. The blades are produced from anodized aluminum and have the very same shape and size of the Extrema Ratio standard production models. The handles are the same used in our production models. The sheaths, sold separately, are the same used for the real knives. The stiff blade allows for training complex defensive and disarming techniques. We recommend the use of appropriate protective gear when training.
€18.92
€22.26

In stock

Folding karambit knife Extrema Ratio Nightmare Black 04.1000.0454/BLK 7.3cm
-15%
Folding knife Extrema Ratio Nightmare Black 7.3cm 04.1000.0454/BLK
Extrema Ratio is proud to present the new development of karambit folding knife with rescue characteristics. It has been adopted by the special units of U.S.I.V.P. Principality of Monaco Police. Its name comes from the development and consultancy department of Monaco special intervention units. It comes with a standard industrial-grade cutter blade which is easily replaced, a reversable pocket clip, a glass braker placed in the finger ring. It is produced both in black and stone washed version.
€197.42
€232.26

In stock

Survival knife Extrema Ratio Ontos Green No Kit 04.1000.0127/GRN-NK 15.9cm - 1
-15%
Survival knife Extrema Ratio Ontos Green No Kit 15.9cm 04.1000.0127/GRN-NK
Growing demand from the professionals amongst our clients persuaded Extrema Ratio to design a survival tool for all seasons. ONTOS (“the thing” in Greek) is a pure field knife, tough and heavyweight despite its compact size. The serrated segment on the back of the blade is meant as a back-up, never to be caught without a sharp edge ready for use. The MOLLE compatible nylon thigh sheath stays on even in the event of a retreat, when a soldier would drop most of his cumbersome primary equipment. It is possible to buy separately a survival kit to be fixed to knife sheath. Available versions: ONTOS BLACK, ONTOS GREEN.
€256.30
€301.53

In stock

Training knife Extrema Ratio TK Col Moschin 04.1000.0125-TK 14.4cm - 1
-15%
Training knife Extrema Ratio TK Col Moschin 14.4cm 04.1000.0125-TK
Extrema Ratio restyled series of training knives are manufactured in a wide range of models of diverse size and shape. They enable martial arts practitioners and professionals to train different combat techniques with an appropriate and dedicated tool. All training knives are produced in a metallic blue colour which makes them easily identified even when sheathed. The blades are produced from anodized aluminum and have the very same shape and size of the Extrema Ratio standard production models. The handles are the same used in our production models. The sheaths, sold separately, are the same used for the real knives. The stiff blade allows for training complex defensive and disarming techniques. We recommend the use of appropriate protective gear when training.
€34.27
€40.32

In stock

Tactical knife Extrema Ratio Fulcrum C FH Black 11cm
-15%
Fixed blade Knife Extrema Ratio Fulcrum C FH Black 11cm 04.1000.0110/BLK
FULCRUM C is the compact version of the FULCRUM, which it equals in robustness and sturdiness. Its downsized blade (only 4″ 1/3 long) and handle make it comfortable to carry and easily concealed. The included hard sheath can be worn vertically, horizontally or obliquely (at a 45° angle), and sports a single automatic pressure-activated security lock for quick, easier drawing and sheating. This makes the FULCRUM C an intuitive, rapid-use knife, ideally suited to emergencies or self-defense. The original version of the FULCRUM C comes with a 3.93in compact handle, the Full Handle version comes with a more comfortable 5in handle.
€175.48
€206.45

In stock

Tactical knife Extrema Ratio Task C Black 04.1000.0085/BLK 11cm
-15%
Fixed blade Knife Extrema Ratio Task C Black 11cm 04.1000.0085/BLK
Extrema Ratio Task Compact Black fixed knife in a compact size. The blade 110 mm (4.3 in) made of Böhler N690 steel, black burnishing finish. Handle Forprene with lanyard hole. Knife comes with hard belt sheath and BELT-CLIP. The sheath can be worn vertically, horizontally or obliquely (at a 45° angle). Overall length 214 mm (8.4 in). Weight 205 g (7.2 oz).
€152.86
€179.84

In stock

Dagger Extrema Ratio Suppressor Trentennale GIS 04.1000.0312/BLK-30 17.6cm
-15%
Fixed blade Knife Extrema Ratio Suppressor Trentennale GIS 17.6cm 04.1000.0312/BLK-30
Suppressor Trentennale from Extrema Ratio is the memorial dagger, issued to commemorate the thirtieth anniversary of the unit G.I.S., the renowned counter-terrorism unit of the Carabinieri (Italian military police). Suppressor Trentennale GIS is a commemorative limited and numbered series of 1000 daggers, bearing both historical and current unit logos. Comes in a hand-polished, clear plexiglass display case. Blade 176 mm (6,9 in), Böhler N690 steel. Weight 302 g (10.7 oz)
€536.73
€631.45

In stock

Tactical knife Extrema Ratio Nimbus Operativo
-15%
Fixed blade Knife Extrema Ratio Nimbus Operativo 14.1cm 04.1000.0240/BLK-OP
Extrema Ratio Nimbus Operativo 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 black Forprene handle provides a comfortable grip. The total length of the Nimbus Operativo combat knife is 263 mm (10.35 in) Kydex sheath included. Weighs 203 g. (7.16 oz)
€217.30
€255.65

In stock

Tactical knife Extrema Ratio Arditi 16.7cm
-15%
Fixed blade Knife Extrema Ratio Arditi 16.7cm
Extrema Ratio Arditi is a modern version of the First World War Italian Arditi assault knife. The black blade 167 mm (6.57 in) is made of Böhler N690 steel. The sturdy black polymer handle provides a comfortable grip. The total length of the Arditi knife is 270 mm (10.62 in) Cordura sheath included. Weighs 224 g. (7.90 oz)
€281.73
€331.45

In stock

Folding knife Extrema Ratio MF1 Desert Warfare 04.1000.0133/DW 9.2cm
-15%
Folding knife Extrema Ratio MF1 Desert Warfare 9.2cm 04.1000.0133/DW
The Extrema Ratio MF1 BC is a tan-colored versatile folding knife with textured blade. Everything said about the MF line is also true for the MF1 model. The MF1 has a built-in screwdriver for adjusting the optics of firearms. The knife is designed specifically for use by law enforcement officers and paramilitary units, but due to its compactness, it is also perfect for everyday use.
€232.38
€273.39

In stock

Folding knife Extrema Ratio MF0 D Desert Warfare 04.1000.0140/DW 6.8cm - 1
-15%
Folding knife Extrema Ratio MF0 D Desert Warfare 6.8cm 04.1000.0140/DW
MF stands for Medium Folder: a product line positioning itself between the BF (Basic Folder) and the Heavy Folder lines. MF knives employ the LINER-LOCK mechanism and are distinguished for their sturdiness; all are equipped with a glass-breaker. An innovative supplementary screw can be unlocked to enable fine-tuning of the main screw, adjusting opening speed to taste. Hemispheric milling marks on handles make it easier to change from saber-style to reverse grip. Clips are reversible. Model MF0 is “the little one” amongst MF knives – basically a compact version of the MF1. It retains all the characteristics of MF1 but has a downsized handle and shortened blade, similar to our SHRAPNEL “back-up” knife. Available versions: MF0 BLACK, MF0 BLACK RUVIDO, MF0 DESERT WARFARE.
€220.72
€259.67

In stock

Training knife Extrema Ratio TK Suppressor 04.1000.0312-TK 17.6cm - 1
-15%
Training knife Extrema Ratio TK Suppressor 17.6cm 04.1000.0312-TK
Suppressor training knife. Extrema Ratio restyled series of training knives are manufactured in a wide range of models of diverse size and shape. They enable martial arts practitioners and professionals to train different combat techniques with an appropriate and dedicated tool. All training knives are produced in a metallic blue colour which makes them easily identified even when sheathed. The blades are produced from anodized aluminum and have the very same shape and size of the Extrema Ratio standard production models. The handles are the same used in our production models. The sheaths, sold separately, are the same used for the real knives. The stiff blade allows for training complex defensive and disarming techniques. We recommend the use of appropriate protective gear when training.
€32.56
€38.31

In stock

MyGoodKnife is the official distributor of Extrema Ratio. Extrema Ratio knives are a part of equipment of many special military units of Italy, the police and rescue services. Each model is developed very carefully and undergoes a series of rigorous tests before it is put into production. Extrema Ratio cooperates with the University of Perugia, where scientists conduct a number of studies determining the ergonomics of Extrema Ratio products and methods for improving it. The office of Extrema Ratio is located in Prato, Italy. Both Extreme Ratio tactical knives and EDC knives are distinguished by impeccable quality. Most knives are made of Austrian steel N690, which is famous for its high content of molybdenum and cobalt and is highly corrosion resistant. Due to this, N690 steel has increased strength and resists shock loads well. The most popular Extrema Ratio knives are Fulcrum, Col Moschin, RAO, Adra and others. Extrema Ratio also produces several lines of tactical folding knives: BF (basic folder), MF (medium folder), BD4, BD2 series and other knives. In our store you can buy Extrema Ratio tactical knives, as well as folding and EDC knives of this brand.