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Extrema Ratio

Extrema Ratio

Extrema Ratio, located in Prato, Italy, 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.

The increased capacity through the years enabled Extrema Ratio to extend its operations. As part of this effort, the company moved in 2004 to a new 600 square meter facility in order to meet the market demand and the company quickly established itself as one of the country's leading cutlery manufacturers.

Extrema Ratio serves military and law enforcement communities as well as commercial markets and the knives are well known and sought after all over the globe.

The company 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.

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  • Extremaratio - A.M.F. Advanced Multi Function Black - AMF - Coltello

    Extremaratio - Arditi Black - Couteau à tranchant unique - couteau

    374,00 €

    Article code: ER-AR-B

  • Extremaratio - A.M.F. Advanced Multi Function Black - AMF - Coltello

    Extremaratio - Arditi Deluxe - Poignard à un tranchant - Edition collector limitée - Couteau

    644,00 €

  • ExtremaRatio - 185° RAO in acciaio giapponese SanMai

    ExtremaRatio - 185 ° RAO en acier japonais sanmai - couteau

    469,99 €

    Article code: RAO-SANMAI

  • ExtremaRatio - 185° RAO - nuova versione 2018 - coltello

    ExtremaRatio - 185° RAO - nouvelle version 2018 - couteau

    359,00 €

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF0 R CD - Stone Washed - couteau

    81,00 €

    Article code: BF0-R-CD

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF0 R CD - Desert Warfare - Stone Washed - couteau

    81,00 €

    Article code: BF0-R-CD-DW

  • Extremaratio - Fulcrum II T - poignée rugueuse - Tanto - couteau

    Extremaratio - Fulcrum II T - poignée rugueuse - Tanto - couteau

    370,00 €

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF1CD Desert Warfare - Drop Point - couteau

    174,00 €

    Article code: ER-BF1CD-DW

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Requiem Wolf Grey - couteau tactique

    150,00 €

    Article code: ER-REQ-WG

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Requiem Ranger Green - couteau tactique

    150,00 €

    Article code: ER-REQ-RG

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Requiem Desert - couteau tactique

    150,00 €

    Article code: ER-REQ-DE

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Requiem HCS - couteau tactique

    150,00 €

    Article code: ER-REQ-HC

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Requiem Black - couteau tactique

    161,00 €

    Article code: ER-REQ-BK

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Mamba Wolf Gray - couteau tactique

    148,00 €

    Article code: ER-MAM-WG

  • ExtremaRatio - T-Razor - coltello

    ExtremaRatio - Panthera Satin - couteau pliant

    246,00 €

  • ExtremaRatio - T-Razor - coltello

    ExtremaRatio - Panthera Black - couteau pliant

    227,01 €

    Article code: ER-PAN-BL

  • ExtremaRatio - 185° RAO - nuova versione 2018 - coltello

    ExtremaRatio - 185° RAO - nouvelle version 2018 - couteau

    359,00 €

    Article code: ER-185RAO

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF1CD - Damas Coreless - Edition Limitée - couteau

    235,00 €

    Article code: ER-BF1CD-C

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF1CT - Damas Coreless - Edition Limitée - couteau

    235,00 €

    Article code: ER-BF1CT-C

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 Stone Washed - couteau

    207,00 €

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 DG Stone Washed - couteau

    210,00 €

    Article code: ER-DEF2DGSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 Black - couteau

    232,00 €

    Article code: ER-DEF2BL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 DG Black - couteau

    235,00 €

    Article code: ER-DEF2DGBL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender Stone Washed - Couteau

    202,00 €

    Article code: ER-DEFSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender DG Stone Washed - Couteau

    206,00 €

    Article code: ER-DEFDGSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender Black - Couteau

    228,01 €

    Article code: ER-DEFBL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender DG Black - Couteau

    231,01 €

  • ExtremaRatio - Shrapnel OG Satin in San Mai CoS, coltello, knife, messer

    ExtremaRatio - Shrapnel OG Satin in San Mai CoS - couteau

    299,00 €

  • ExtremaRatio - Collaborazione Collini 2015 - Limited Edition - coltello

    ExtremaRatio - Ti-Rock Satin SanMai CoS - Titanium Black - Limited Edition - couteau

    439,99 €
    DISCONTINUED - FUORI PRODUZIONE
  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout Noir - couteau

    194,00 €

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout 2 Noir - couteau

    197,99 €
    Disponible en 10/15 jours
  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout 2 Satin - couteau

    173,00 €
    Disponible en 10/15 jours
  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Mamba Desert - couteau tactique

    148,00 €

    Article code: ER-MAM-DE

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Mamba HCS - couteau tactique

    148,00 €

    Article code: ER-MAM-HC

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Mamba Ranger Green - couteau tactique

    148,00 €

    Article code: ER-MAM-RG

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Mamba Black - couteau tactique

    159,00 €

    Article code: ER-MAM-BK

  • ExtremaRatio - BF2 R CD - Razor Opening - Black Drop Point - couteau

    ExtremaRatio - BF2 R CD - Razor Opening - Black Drop Point - couteau

    185,00 €

    Article code: ER-BF2RCD-B

  • ExtremaRatio - BF2 R CD - Razor Opening - Desert Warfare Drop Point - couteau

    ExtremaRatio - BF2 R CD - Razor Opening - Desert Warfare Drop Point - couteau

    183,00 €

    Article code: ER-BF2RCD-D

  • ExtremaRatio - BF2 R CD - Razor Opening - Stone Washed Drop Point - couteau

    ExtremaRatio - BF2 R CD - Razor Opening - Stone Washed Drop Point - couteau

    181,00 €

    Article code: ER-BF2RCD-S

  • ExtremaRatio - BF2 R CT - Razor Opening - Black Tanto Point - couteau

    ExtremaRatio - BF2 R CT - Razor Opening - Black Tanto Point - couteau

    185,00 €

  • ExtremaRatio - BF2 R CT - Razor Opening - Desert Warfare Tanto Point - couteau

    ExtremaRatio - BF2 R CT - Razor Opening - Desert Warfare Tanto Point - couteau

    183,00 €

    Article code: ER-BF2RCT-D

  • ExtremaRatio - BF2 R CT - Razor Opening - Stone Washed Tanto Point - couteau

    ExtremaRatio - BF2 R CT - Razor Opening - Stone Washed Tanto Point - couteau

    181,00 €

    Article code: ER-BF2RCT-S

  • Extremaratio - A.M.F. Advanced Multi Function Black - AMF - Couteau

    Extremaratio - A.M.F. Advanced Multi Function Black - AMF - Couteau

    372,00 €

    Article code: ER-AMFBL

  • Extremaratio - A.M.F. Advanced Multi Function Desert - AMF - Couteau

    Extremaratio - A.M.F. Advanced Multi Function Desert - AMF - Couteau

    365,00 €

    Article code: ER-AMFDE

  • ExtremaRatio - Kukri KS - Testudo - coltello

    ExtremaRatio - KH Black - Kukri Machete - couteau

    427,00 €
    Disponible en 10/15 jours
  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout Satin - couteau

    168,01 €

  • ExtremaRatio - Glauca J1 Jagdkommando - coltello

    ExtremaRatio - Glauca J1 Jagdkommando - couteau

    497,00 €

    Article code: ER-GLAJ1

  • ExtremaRatio - set da barba - shaving kit - pennello e rasoio

    ExtremaRatio - rasage set - shaving kit - brosse et rasoir

    774,99 €

    Article code: ER-SHAVING

  • ExtremaRatio - Shrapnel OG Full Handle - Black - coltello

    ExtremaRatio - Task J - Jagdkommando - couteau

    367,00 €

    Article code: ER-TASKJ

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Kitchen Talon 8cm - couteau à steak et une table

    50,00 €

    Article code: k-talon

  • ExtremaRatio - Collaborazione Collini 2015 - Limited Edition - coltello

    ExtremaRatio - Ti-Rock Satin SanMai CoS - Titanium Blue - Limited Edition - couteau

    439,99 €
    SOLD OUT - TERMINATO
  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Emballage 6 pièces Sector 1 couteau de table 4cm - Couteau de table

    270,00 €

    Article code: set-sect1

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Emballage 6 pièces Sector 2 couteau de table 7cm - Couteau de table

    276,00 €

  • ExtremaRatio - Collaborazione Collini 2015 - Limited Edition - coltello

    ExtremaRatio - Ti-Rock Satin SanMai CoS - Titanium Grey - Limited Edition - couteau

    439,99 €

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Sector 2 couteau de table 7cm - Couteau de table

    50,00 €

    Article code: sector2

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Sector 1 couteau de table 4cm - Couteau de table

    49,00 €

    Article code: sector1

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - 6 pcs Cuisine Talon couteau 8cm - Couteau de table

    276,00 €

    Article code: set-talon

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF0CD - Stone Washed - couteau

    81,00 €

  • ExtremaRatio - Selvans Desert + Survival Kit - coltello

    ExtremaRatio - Selvans Desert + Kit de survie - couteau de survie

    638,00 €
    Disponible en 10/15 jours
  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    ExtremaRatio - N.K.3 Black Karambit - Neck Knife - NK3K - couteau

    169,99 €

  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    ExtremaRatio - N.K.3 Karambit Stone Washed - Neck Knife - NK3K - couteau

    161,00 €

  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    ExtremaRatio - N.K.3 Karambit Desert Warfare - Neck Knife - NK3K - couteau

    174,00 €

  • ExtremaRatio - Collaborazione Collini 2015 - Limited Edition - coltello

    ExtremaRatio - Ti-Rock Tactical Version - Edition Limitée - couteau

    549,00 €
    DISCONTINUED
  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - Nightmare Karambit - Noir - Couteau pliant

    260,99 €

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - Nightmare Karambit - Stone Washed - Couteau pliant

    245,00 €

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF1 T Tanto Black - couteau pliant

    350,99 €

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF1 D Drop Black - couteau pliant

    350,99 €

    Article code: ER-HF1D

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF2T Tanto Black - couteau pliant

    363,00 €

    Article code: 12614T

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF2D Drop Black - couteau pliant

    363,00 €

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - MF0T Tanto Black - couteau pliant

    275,00 €
    Disponible en 10/15 jours
  • ExtremaRatio - Resolza S Black - couteau pliant

    ExtremaRatio - Resolza S Black - couteau pliant

    151,00 €

    Article code: 12079S

  • ExtremaRatio - Resolza L Black - couteau pliant

    ExtremaRatio - Resolza L Black - couteau pliant

    227,01 €

    Article code: 12079L

  • ExtremaRatio - Resolza S Satin - coltello chiudibile

    ExtremaRatio - Resolza S Satin - couteau pliant

    147,00 €

  • ExtremaRatio - Resolza L Satin - couteau pliant

    ExtremaRatio - Resolza L Satin - couteau pliant

    215,00 €

    Article code: 12078L

  • ExtremaRatio - Shrapnel OG Full Handle - Black - coltello

    ExtremaRatio - Shrapnel OG Full Handle - Noir - couteau

    222,00 €
    Disponible en 10/15 jours
  • ExtremaRatio - Shrapnel OG Full Handle - Black - coltello

    ExtremaRatio - Fulcrum C FH - Full Handle - Noir - couteau

    230,99 €

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Corvo Noir - Couteau

    286,00 €

  • ExtremaRatio - Culter Venatorius - Limited Edition 300pz - coltello

    Extrema Ratio - Culter Venatorius - Limited Edition - Couteau de chasse

    1 085,50 €
    DISCONTINUED
  • Victorinox - Fodero in pelle 4.0523.3

    ExtremaRatio - couplage clip ceinture Tek-Lok - Accessoires de couteaux

    24,00 €

    Article code: ER-TEKLOK

  • ExtremaRatio - Collaborazione Collini 2015 - Limited Edition - coltello

    ExtremaRatio - Ti-Rock Tactical Version - Edition Limitée - couteau

    395,00 €
    DISCONTINUED
  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    ExtremaRatio - N.K.2 Stone Washed - Neck Knife - NK2 - Couteau

    124,00 €

  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    ExtremaRatio - N.K.2 Black - Neck Knife - NK2 - couteau

    133,00 €

  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    ExtremaRatio - N.K.3 Stone Washed - Neck Knife - NK3 - couteau

    147,00 €

  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    ExtremaRatio - N.K.3 Black - Neck Knife - NK3 - couteau

    156,00 €

  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    ExtremaRatio - N.K.3 Desert Warfare - Neck Knife - NK3 - couteau

    161,00 €

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - T4000 S Testudo - couteau

    266,00 €

  • ExtremaRatio - MF3D BC - Ingredior Drop Testudo - coltello

    ExtremaRatio - MF3D - Ingredior Drop Testudo - couteau

    356,00 €

  • ExtremaRatio - Dobermann IV - Tactical Testudo - coltello, cuchillo, knife

    ExtremaRatio - Dobermann IV - Africa - couteau

    581,00 €

  • ExtremaRatio - Dobermann IV - Tactical Testudo - coltello, cuchillo, knife

    ExtremaRatio - Dobermann IV S - Africa - couteau

    577,00 €

  • ExtremaRatio - A.S.F.K. Comando delle Forze Speciali dell'Esercito - ASFK - coltello

    Extrema ratio - A.S.F.K. commandement des forces spéciales de l'armée italienne - ASFK - couteau

    351,99 €

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - T4000 C Testudo - couteau

    227,01 €

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Waki ​​Desert Warfare 30cm. - Couteau à Rôtir

    345,00 €
    Disponible en 10/15 jours
  • ExtremaRatio - Dobermann IV - Tactical Testudo - coltello, cuchillo, knife

    ExtremaRatio - Dobermann IV - Classique Satin - couteau

    410,01 €

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Waki ​​30cm. - Couteau à Rôtir

    433,00 €
    Disponible en 10/15 jours

    Article code: 12320

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Psycho 15cm. - Couteau du Chef

    336,00 €
    Disponible en 10/15 jours

    Article code: 12321

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Psycho Desert Warfare 19cm. - Couteau du Chef

    264,00 €

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Kato 15cm. - Couteau Santoku

    358,00 €
    Disponible en 10/15 jours

    Article code: 12323

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Kato Desert Warfare 15cm. - Couteau Santoku

    236,00 €
    Disponible en 10/15 jours

    Article code: 12324

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Psycho Desert Warfare 15cm. - Couteau du Chef

    244,00 €

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Psycho 19cm. - Couteau du Chef

    369,00 €
    Disponible en 10/15 jours

    Article code: 12326

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