Extrema Ratio Knives

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Folding knife Extrema Ratio BF2 CD Black Ruvido 04.1000.0145/RBV 8.7cm
Folding knife Extrema Ratio BF2 CD Black Ruvido 8.7cm 04.1000.0145/RBV
Extrema Ratio BF2 CD Black Ruvido version. BF2's are “Full size” folding knives especially suitable for professional use by military or police operatives on the field. The handle is solid and comfortable, with the reversible clip becoming a useful and comfortable resting point for the thumb in a “reverse” grip. Characteristical lowered flat areas in the handle give access to the opening “pins”, which don’t protrude from the knife when closed. The flat-ground blade is available in a drop-point or a tanto shape, featuring an extra-thick and stout tip (as in model BF1). The renowned LINER-LOCK blade-blocking system is paired with a carter-protected, manually-activated secondary blocking system.
€181.45

Shipping after 10-20 business days

Tactical knife Extrema Ratio Giant Mamba Black 04.1000.0218/BLK 16.3cm
Fixed blade Knife Extrema Ratio Giant Mamba Black 16.3cm 04.1000.0218/BLK
The Giant Mamba has a 6.3 mm thick, 58 HRC Böhler N690 steel, plain edged tanto blade with full length fuller for lightness finished in black or stone washed. 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, anti-rotation rubberized thigh strap and a retention safety disengaged by simple pressure on the trigger-like lever. The new knife line minimizes thickness and bulk without skimping on toughness and safety.
€250.81

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Tactical knife Extrema Ratio Contact Desert 04.1000.0215/DW 16.2cm
Fixed blade Knife Extrema Ratio Contact Desert 16.2cm 04.1000.0215/DW
Extrema Ratio Contact Desert version. Contact is a first knife of Extrema Ratio new production line. It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. Contact 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) All these details make the Contact the elder brother of the now famous Requiem, revisited in proportions and in some technical features. The blade is made in Böhler N690 steel with a hardness of 58 HRC. 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.
€226.61

Shipping after 10-20 business days

Tactical knife Extrema Ratio Contact Black
Fixed blade Knife Extrema Ratio Contact Black 16.2cm 04.1000.0215/BLK
Contact is a first knife of Extrema Ratio new production line. It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. Contact 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) All these details make the Contact the elder brother of the now famous Requiem, revisited in proportions and in some technical features. The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. 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.
€250.81

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Training knife Extrema Ratio TK KS 04.1000.0172-TK 24.1cm
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.
€68.55

In stock

Training knife Extrema Ratio TK BF2 04.1000.0145-TK 8.9cm
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.
€32.26

In stock

Folding karambit knife Extrema Ratio Nightmare Black 04.1000.0454/BLK 7.3cm
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.
€254.03

In stock

Survival knife Extrema Ratio Ontos Green No Kit 04.1000.0127/GRN-NK 15.9cm - 1
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.
€319.35

In stock

Multi-tool Extrema Ratio TK Tool 2.0 Stonewashed tksw 10cm - 1
Multi-tool Extrema Ratio TK Tool 2.0 Stonewashed 10cm 04.1000.0050/SW
A multifunctional tool with a basic and essential design, jointly developed with military professionals. It features a special tip useful for adjusting and calibrating firearm optics. The front of a TK TOOL 2.0 can be used as a screwdriver suitable for 8/10 mm screws, or as a prying lever. The central slot in the blade can be used as a shackle key. This tool has also features two holes for a cord or paracord used in assembling a field or camping tent. Overall, a much sought-after tool for a number of outdoor activities. MOLLE system compliant.
€63.71

Shipping after 10-20 business days

Training knife Extrema Ratio TK Col Moschin 04.1000.0125-TK 14.4cm - 1
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.
€48.39

In stock

Tactical knife Extrema Ratio Fulcrum C FH Black 11cm
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.
€209.68

In stock

Tactical knife Extrema Ratio Task C Black 04.1000.0085/BLK 11cm
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).
€183.87

In stock

Tactical knife Extrema Ratio Arditi 16.7cm
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)
€331.45

In stock

Tactical knife Extrema Ratio Operativo 39-09 Operativo
Fixed blade Knife Extrema Ratio 39-09 Operativo 19.5cm 04.1000.0339/BLK-OP
Extrema Ration 39-09 Operativo is the result of a project sponsored by COFS (the inter-force operations command for Italian special forces) and its former Commander-in-chief, Gen. Bertolini. This combat knife 39-09 is a restyling of the Model 1939 “paracadutista assaltatore” (assault paratrooper) knife, a celebrated piece of Italian military history.
Small changes which make it a highly effective, dependable dagger. The included hard sheath is designed to be worn at the ankle, in the characteristic fashion of Italian paratroopers.
The 39-09 Operativo version has Forprene handle, black blade oxide-coated, no logo. It comes in a black belt sheath. Weight  338 g (11.9 oz)
€350.00

Shipping after 10-20 business days

Folding knife Extrema Ratio MF1 Desert Warfare 04.1000.0133DW 9.2cm
Folding knife Extrema Ratio MF1 Desert Warfare 9.2cm 04.1000.0133DW
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.
€283.06

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Training knife Extrema Ratio TK Suppressor 04.1000.0312-TK 17.6cm - 1
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.
€51.61

In stock

Folding knife Extrema Ratio BF0 R CD Desert 04.1000.0461/DW 5.5cm - 1
Folding knife Extrema Ratio BF0 R CD Desert 5.5cm 04.1000.0461/DW
BF0 R CD folding knife with Desert handle. Extrema Ratio is proud to present the new basic folder BF0 R CD. It is a small Basic folders. Its handle produced in technopolymer makes it light and resistant, also thanks to its steel internal frame. BF0 R CD employs the trustworthy LINER-LOCK blade blocking system. It keeps all BF0 characteristics improved with new High Speed Razor Opening System. Available versions: Black, Desert, HCS, Ranger Green, Wolf Grey
€65.32

In stock

Folding knife Extrema Ratio BF0 R CD Ranger Green 04.1000.0461/GRN 5.5cm - 1
Folding knife Extrema Ratio BF0 R CD Ranger Green 5.5cm 04.1000.0461/GRN
BF0 R CD folding knife with Tanger Green handle. HCS Extrema Ratio is proud to present the new basic folder BF0 R CD. It is a small Basic folders. Its handle produced in technopolymer makes it light and resistant, also thanks to its steel internal frame. BF0 R CD employs the trustworthy LINER-LOCK blade blocking system. It keeps all BF0 characteristics improved with new High Speed Razor Opening System. Available versions: Black, Desert, HCS, Ranger Green, Wolf Grey
€67.73

In stock

Folding knife Extrema Ratio BF0 R CD HCS 04.1000.0461/HSC 5.5cm - 1
Folding knife Extrema Ratio BF0 R CD HCS 5.5cm 04.1000.0461/HSC
BF0 R CD folding knife with HCS handle. HCS Extrema Ratio is proud to present the new basic folder BF0 R CD. It is a small Basic folders. Its handle produced in technopolymer makes it light and resistant, also thanks to its steel internal frame. BF0 R CD employs the trustworthy LINER-LOCK blade blocking system. It keeps all BF0 characteristics improved with new High Speed Razor Opening System. Available versions: Black, Desert, HCS, Ranger Green, Wolf Grey
€65.32

In stock

Folding knife Extrema Ratio BF0 R CD Black 04.1000.0461/SW 5.5cm - 1
Folding knife Extrema Ratio BF0 R CD Black 5.5cm 04.1000.0461/SW
Extrema Ratio is proud to present the new basic folder BF0 R CD. It is a small Basic folders. Its handle produced in technopolymer makes it light and resistant, also thanks to its steel internal frame. BF0 R CD employs the trustworthy LINER-LOCK blade blocking system. It keeps all BF0 characteristics improved with new High Speed Razor Opening System. Available versions: Black, Desert, HCS, Ranger Green, Wolf Grey
€65.32

In stock

Sharpening stone Extrema Ratio Double grain 0441000102 - 1
Sharpening stone Extrema Ratio Double grain
Extrema Ratio Double grain sharpener in silicon carbide. It is composed of a rough grain side (180) and a fine grain side (400) to carry out a more performing sharpening. Extrema Ratio Double grain sharpener comes with a cordura sheath
€38.70

In stock

Hunting and Outdoor knife Extrema Ratio Dobermann IV S Africa erd4af 14.3cm - 1
Fixed blade Knife Extrema Ratio Dobermann IV S Africa 14.3cm 04.1000.0184/AFR
Dobermann IV S Africa, a knife dedicated to hunters, projected to skin and work on the prey. It comes with a 145 mm satin blade. Dobermann IV S Africa will come with two different handles: one in santos rosewood and one in forprene. In this way the user can easily change the handle, depending on his needs. Moreover it will come with an Italian handmade leather sheath, a sharpener and a stainless steel marlin spike. There are only best hunting knives in MyGoodKnife's range.
€540.32

Shipping after 10-20 business days

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. MyGoodKnife is the official distributor of Extrema Ratio.