Extrema Ratio Knives

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Folding knife Extrema Ratio Ant Black Stone Washed
New
Folding knife Extrema Ratio Ant Black Stone Washed 5cm 041000467SWBLK
Extrema Ratio Ant is a small Every Day Carry folding knife. It has just 5 cm blade made of Bohler N690 steel. This version of Extrema Ratio Ant has black handle scales and Stone Washed blade. Knife has a pocket clip for ease of carrying. The sheepsfoot blade of Ant pocket knife is equipped with a small slot on the top to facilitate opening.
€95.62

In stock

Folding knife Extrema Ratio Ant Black 041000467BLKBLK 5cm
New
Folding knife Extrema Ratio Ant Black 5cm 041000467BLKBLK
Total black version of the Extrema Ratio Ant smallest EDC knife. This folding knife has 5 cm "sheepfoot" blade made of Bohler N690 steel. For easy carring Extrema Ratio Ant has a lanyard hole and a pocket clip. Pocket knife Ant is equipped with a small slot on the top to facilitate opening.
€101.99

In stock

Folding knife Extrema Ratio X-Ant 041000467MDTI 5cm
New
Folding knife Extrema Ratio X-Ant 5cm 041000467MDTI
X-Ant is a limited edition of the Extrema Ratio Ant Every Day Carry series of knives. This compact folding knife of unusual design has a 5 cm long blade. The uniqueness of the X-Ant is that the blade is made of sintered tungsten carbide with a hardness of 71 HRC. This provides very high cutting ability and absolute corrosion resistance. Extrema Ratio X-Ant is supplied in a durable polypropylene case, resistant to moisture, dust and impact. Inside there is a metal plate with a serial number of a limited series, which makes each copy of the Extrema Ratio X-Ant a real collector's item.
€318.73

In stock

Folding knife Extrema Ratio BF2 CT Stone Washed 04.1000.0146/SW 8.7cm
New
Folding knife Extrema Ratio BF2 CT Stone Washed 8.7cm 04.1000.0146/SW
Extrema Ratio BF2 CT is full sized folding knife with stone washed blade. The 87 mm blade is made of high quality Bohler N690 steel. The handle of Extrema Ratio BF CT knife has an aluminium scales. Knife has a secondary blocking system. Weight is 142 g.
€171.31

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Folding knife Extrema Ratio BD4 Adra 0410000498TMNSE 12.3cm
New
Folding knife Extrema Ratio BD4 Adra 12.3cm 0410000498TMNSE
This Extrema Ratio BD4 Adra limited edition knife has a standard blade. Contractor version is also available. The handle is composed of anodized aluminum scales in the Tactical Mud color. The blade of BD4 Adra is made of Böhler N690 steel. This Extrema Ratio knife comes inside a certified IP67 waterproof polypropylene technical case and includes a scroll outlining the past and present of the 17th Stormo Incursori of the Italian Air Force and a metal plate bearing the progressive number within the limited series.
€276.48

In stock

Fixed blade Knife Extrema Ratio Fat Boy Dark Stone x Svechnikov Workshop 0410000107OKS-BLKSV 21cm
Fixed blade Knife Extrema Ratio Fat Boy Dark Stone x Svechnikov Workshop 21cm 0410000107OKS-BLKSV
Exclusive! New amazing Extrema Ratio Fat Boy Dark Stone knife. It has 21 cm length blade made of N690 steel with a thickness of 8.6 mm. Weight of Extrema Ratio Fat Boy is 1 kg. Thanks to its generous size, Fat Boy is ideal for all heavy tasks. Custom handle is made of Scandinavian birch by Svechnikov Workshop. The set also includes original G10 handle pads. Fat Boy knife is equipped with a black Cordura sheath with MOLLE system. 
€645.42

In stock

Folding knife Extrema Ratio LKU01 Urban Dark 10cm
Folding knife Extrema Ratio LKU01 Urban Dark 10cm
Extrema Ratio LKU01 URBAN Dark is a folding knife that combines Italian elegance and combat strategy. It has the 58 HRC hardened Böhler N690 steel blade and the anticorodal aluminium handle scales. The clip, made of stainless steel, is removable and reversible to ensure ambidextrous use. Extrema Ratio LKU01 URBAN Dark weights 123 g. 
€179.28

In stock

Extrema Ratio Versa Satin 0410000214SAT 8cm
Extrema Ratio Versa Satin 8cm 0410000214SAT
Versa is a new multipurpose knife from Extrema Ratio. This models has a monolithic construction made of Bohler N690 steel. 80 mm blade has a tanto profile. Name Versa, perfectly embodies the characteristics of this knife; its versatility makes it suitable for a variety of situations. Extrema Ratio Versa good as Every Day Carry knife, and as outdoor, survival, bushcraft or hunting knife. Satin version is convinient as EDC knife. Weight is 110 g. Versa comes with kydex sheath.
€135.46

In stock

Fixed blade Knife Extrema Ratio S-THIL Stone Washed 04.1000.0223/SW 11.9cm
Fixed blade Knife Extrema Ratio S-THIL Stone Washed 11.9cm 0410000223SW
The Extrema Ratio S-THIL Stone Washed is a backup tactical knife of monolithic construction milled out of a 5 mm (0.2”) bar of BOHLER N690 steel, developed in cooperation with designer Thilo Arnd Schiller. The spear point blade is heat treated to 58 HRC for best combination of edge retention and toughness. It has a false double edge to make it very effective in thrusting and piercing and has a full length fuller that flows elegantly from the blade into the handle. The blade is milled integral to the knife for better compactness and lightness, with minimum thickness yet with a pattern that reminds of the classical Extrema Ratio knife grip. This profile creates two small guards and a comfortable thumb rest to prevent the hand from slipping towards the blade. On the pommel there is a diamond shaped skull crusher and a slot for a wrist strap or for giving the knife a paracord grip wrap. The stamped nylon sheath has been designed to be extremely flat and very narrow, to keep it as compact as possible. The tip of the sheath has a hole to allow debris or liquids to be expelled simply by blowing into it. The sheath can be used with belt clip, ULTICLIP or malice clip making it extremely versatile, while it is also possible to attach it to a M.O.L.L.E. webbing just by weaving paracord through it.
€158.17

In stock

Fixed blade Knife Extrema Ratio Pugio SE Desert Warfare 04.1000.0317/DW 11cm
Fixed blade Knife Extrema Ratio Pugio SE Desert Warfare 11cm 0410000317DW
Extrema Ratio Pugio SE fixed knife in a compact size. The blade 110 mm (4.3 in) made of Böhler N690 steel. Desert Warfare pattern handle made of 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 226 mm (8.9 in). Weight 190 g (6.7 oz).
€264.52

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Tactical knife Extrema Ratio Fulcrum Compact Full handle DW 04.1000.0110/DW 11cm
Fixed blade Knife Extrema Ratio Fulcrum Compact Full handle DW 11cm 0410000110DW
Extrema Ratio Fulcrum Compact FH DW has a downsized blade 110 mm (4.33 in) and Forprene 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 4.1in compact handle, the Full Handle version comes with a more comfortable 5in handle. Weight 258 g (9.10 oz)
€215.13

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Tactical knife Extrema Ratio Fulcrum Compact Desert Warfare 04.1000.0150/DW 11cm
Fixed blade Knife Extrema Ratio Fulcrum Compact Desert Warfare 11cm 04.1000.0150/DW
Fulcrum Compact Desert Warfare is the shorter version of the Fulcrum, which equals in robustness and sturdiness. Its downsized blade 110 mm (4.33 in) and Forprene handle 104 mm (4.1 in) with Desert warfare pattern 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. Weight 226 g (8 oz)
€215.13

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Tactical knife Extrema Ratio Corvo 04.1000.0442/BLK 17.6cm
Fixed blade Knife Extrema Ratio Corvo 17.6cm 0410000442BLK
The Corvo is a traditional Chilean Army combat knife. Its origins are misterious: it did probably arrive in the New World with the Spanish Conquistadores, who had already appreciated it during the war against the Moors. Corvo has been used during the War of the Pacific. It was produced in several versions such as: the Curved Corvo with the blade bending at almost 90° and the Corvo Atacameño combat knife which is longer but with a gentler bending of the blade for a higher flexibility during use. Extrema Ratio has been inspired by this second version.The black blade 176 mm (6.92 in) is made of Böhler N690 steel. Forprene handle. Total length 307 mm (12.08in) Weight  362 g (12.76 oz)
€285.20

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Tactical knife Extrema Ratio Contact HCS 04.1000.0215/HCS 16.2cm
Fixed blade Knife Extrema Ratio Contact HCS 16.2cm 0410000215HCS
Extrema Ratio Contact HCS version. It has a stonewash 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.
€223.88

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Tactical knife Extrema Ratio Col Moschin Black Collector Edition 04.1000.0125/BLK-CE 15cm
Fixed blade Knife Extrema Ratio Col Moschin Black Collector Edition 15cm 0410000125BLKCE
Now available also in the Collector Edition version with special plexiglass diplay case. Commissioned and officially adopted in 2002 by the Ninth Rgt. Incursori "Col. Moschin", this model is the quintessence of a pure combat knife. Inspired by daggers with an asymmetric blade and straight but slightly orientated handle used by the Arditi, in whose footsteps the Col Moschin Regiment follows, it has been re-elaborated in a modern form, endowed with a double edged blade, (single for the civilian version), integral guards and a removable E.R.M.H. handle in Forprene. Both grindings are hollow grind razor sharp. The centre of gravity is towards the end of the handle, the point especially sharp, it is light, manageable and intuitive. Each new Incursore receives one, and each new Incursore is trained to use it in the best way.
€570.39

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Tactical knife Extrema Ratio 39-09 Special Edition 04.1000.0339/SAT-SE 19.5cm
Fixed blade Knife Extrema Ratio 39-09 Special Edition 19.5cm 04.1000.0339/SAT-SE
This Extrema Ratio 39-09 Special Edition 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 – not to mention advocated for by knife collectors worldwide – this combat knife 39-09 is a restyling of the Model 1939 “paracadutista assaltatore” (assault paratrooper) knife, a celebrated piece of Italian military history. The included hard sheath is designed to be worn at the ankle, in the characteristic fashion of Italian paratroopers. The 39-09 SPECIAL EDITION version, numbered, unlimited edition, has wooden hilt, satin-finish blade. It comes in a black wooden case, including a parade belt sheath. 
€643.00

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Fat Boy Dark Stone
Fixed blade Knife Extrema Ratio Fat Boy Dark Stone 21cm 0410000107OKS-BLK
New amazing Extrema Ratio Fat Boy Dark Stone knife. It has 21 cm length blade made of N690 steel with a thickness of 8.6 mm. Weight of Extrema Ratio Fat Boy is 1 kg. Thanks to its generous size, Fat Boy is ideal for all heavy tasks. The handle is composed of two black G10 scales. Fat Boy knife is equipped with a black Cordura sheath with MOLLE system. Available also in satin version.
€589.62

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Fixed blade Knife Extrema Ratio Fat Boy Satin 0410000107SAT-BLK 21cm
Fixed blade Knife Extrema Ratio Fat Boy Satin 21cm 0410000107SAT-BLK
A long-awaited new product - a unique Extrema Ratio Fat Boy knife. This is the version with a satin finish blade. Fat Boy is the most robust fixed blade knife ever produced by Extrema Ratio.  It has 21 cm length blade. This is the first model produced in N690 steel (58HRC) with a thickness of 8.6 mm, for a total weight of 1 kg. Thanks to its generous size, Fat Boy is ideal for all heavy jobs, from splitting to disengagement in extreme scenarios, allowing you to carry out different activities, including levering to open doors, car doors and windows. The handle is composed of two black G10 scales, featuring a new original Extrema Ratio design. They can be removed and replaced. Fat Boy knife is equipped with a black Cordura sheath with an anti-cutting rubber blade lock. The MOLLE system on both sides can be used by both right-handed and left-handed.
€589.62

In stock

Tactical knife Extrema Ratio Fulcrum Bayonet Ranger Black
Fixed blade Knife Extrema Ratio Fulcrum Bayonet Ranger Black 18cm 0410000301RANGER
 Like the original FULCRUM, this Tactical knife Extrema Ratio Fulcrum Bayonet Ranger Black is extremely versatile and strong, capable of sustaining loads of over 150 kilograms. The tanto-shaped blade allows for large amounts of work and wear while still keeping a sharp edge at its exceedingly sturdy tip. This feature, combined with a sharp false edge (in the military versions only), makes the knife retain sufficient combat penetration capability to engage targets covered in heavy clothing, paddings or soft ballistic protections. Thanks to its weight and top-heavy balancing, the FULCRUM BAYONET blade is suitable for hard work on the field.
FULCRUM BAYONET RANGER is the version supplied to the Italian Alpine Paratroopers, with gears and hilt guard for the M4/M16 rifle and wire cutting system, black handle, black rigid sheath, softshell cordura Camo Italia case.
€388.71

In stock

Neck knife Extrema Ratio Kiri Satin 04.1000.0187/SAT 6cm
Fixed blade Knife Extrema Ratio Kiri Satin 6cm 04.1000.0187/SAT
Neck knife Extrema Ratio Kiri Satin with 6cm blade. Kiridashi is a type of Japanese knife, a cutting multipurpose tool. Its asymmetric bevel, where only one of the two sides is ground and the other is left flat, is one of its features. This traditional Japanese knife has been recreated by Extrema Ratio in accordance with its style, giving it a more tactical appearance than the original. Both the Dark Stone and Satin finishes, made of Böhler N690 steel hardened to 58 HRC, are offered for the Extrema Ratio KIRI.
Two black anodized anticorodal metal scales make up the handle. The metal eyelets on the pre-shaped Kydex sheath allow you to attach it to an M.O.L.L.E. system webbing and insert a paracord.
€205.56

In stock

Folding knife Extrema Ratio MF0 T Desert Warfare 0410000148DW 6.8cm
Folding knife Extrema Ratio MF0 T Desert Warfare 6.8cm 0410000148DW
Extrema Ratio MF0 T Desert Warfare folding knife is equipped with a 7 cm tanto blade.  Extrema Ratio MF0 is a multifunctional folding knife, which is the lightest model in the MF (Medium Folder) line. The knife retains all the characteristics of the MF1, being in fact a smaller version of it. The knife blade is made of Austrian alloy steel Böhler N690 (58 HRC), traditional for Extrema Ratio.
€262.93

In stock

Tactical knife Extrema Ratio Misericordia Desert
Fixed blade Knife Extrema Ratio Misericordia Desert 11.8cm 0410000479SWD
It is a fixed-blade knife Extrema Ratio Misericordia Desert meant for those circumstances in which a knife has to be extremely light and compact. Extrema Ratio Misericordia Desert preserves all the characteristics of the famous Misericordia, model adopted by the 4th Alpine Paratrooper Regiment, and is derived from the commemorative dagger made for the 140th anniversary of the 4th Alpine Regiment and the 70th anniversary of the institution of the Alpine Paratroopers. The new desert coloration gives to this model a new tone that best meets the needs of the most modern operative units. The blade is milled in Böhler N690 steel, heat treated to 58 HRC, and is 118 mm (4.64”) long and 4mm (0.16”) thick with a flat grind. The knife weights just 87g (3.1oz). The blade has a spear point profile with a full length fuller that makes it even lighter, and a false double edge for ¾ of its length. The finishing is stone washed. The knife has a polymer grip that flows smoothly into the ring, topped by a skull crusher, that allows the use of martial arts techniques and grants a very solid grip on the knife. It has the classic Extrema Ratio groove near the front allowing a better grip and it is secured to the tang by a screw. The knife is secured to the sheath by a fast release safety that can be easily reversed for left hand use. The highly resistant nylon sheath is also in desert and is very versatile; two adjustable loops allow the user to attach it to M.O.L.L.E. systems, allowing fast extraction in a tactical scenario. 
€157.76

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Folding knife Extrema Ratio MF1 Black 0410000133BLK 9.2cm
Folding knife Extrema Ratio MF1 Black 9.2cm 0410000133BLK
Extrema Ratio MF1 Black medium folder. Blade length is 92 mm. Same as other Extrema Ratio knives this model has blade made of BÖHLER N690 steel. Anticorodal anodized aluminum handle. Extrema Ratio MF1 Black weights 166 g. 
€255.65

In stock

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.