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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, BF1CD, Drop Point, coltello

    ExtremaRatio - BF1CD - Damast Coreless - Limited Edition - Messer

    235,00 €

    Article code: ER-BF1CD-C

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF1CT - Damast Coreless - Limited Edition - Messer

    235,00 €

    Article code: ER-BF1CT-C

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 Stone Washed - Messer

    207,00 €

    Article code: ER-DEF2SW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 DG Stone Washed - Messer

    210,00 €

    Article code: ER-DEF2DGSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 Black - Messer

    232,00 €

    Article code: ER-DEF2BL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 DG Black - Messer

    235,00 €

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender Stone Washed - Messer

    202,00 €

    Article code: ER-DEFSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender DG Stone Washed - Messer

    206,00 €

    Article code: ER-DEFDGSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender Black - Messer

    228,01 €

    Article code: ER-DEFBL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender DG Black - Messer

    231,01 €

    Article code: ER-DEFDGBL

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

    ExtremaRatio - Shrapnel OG Satin in San Mai CoS - messer

    299,00 €

    Article code: ERCC-SH

  • ExtremaRatio - Ti-Rock Tactical Version - Limited Edition - coltello knife messer couteau cuchillo poignard chiudibile tascabile pieghevole

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

    439,99 €
    DISCONTINUED - FUORI PRODUZIONE
  • ExtremaRatio - 185° RAO in acciaio giapponese SanMai

    ExtremaRatio - 185 ° RAO in Sanmai japanischen Stahl - Messer

    469,99 €

    Article code: RAO-SANMAI

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout Black - Messer

    194,00 €

    Article code: 12656

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout 2 Black - Messer

    197,99 €
    Erhältlich in 10/15 Tagen

    Article code: 12658

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout 2 Satin - Messer

    173,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12659

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Mamba Desert - taktisches Messer

    148,00 €

    Article code: ER-MAM-DE

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Mamba HCS - taktisches Messer

    148,00 €

    Article code: ER-MAM-HC

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Mamba Ranger Green - taktisches Messer

    148,00 €

    Article code: ER-MAM-RG

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Mamba Black - taktisches Messer

    159,00 €

    Article code: ER-MAM-BK

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

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

    185,00 €

    Article code: ER-BF2RCD-B

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

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

    183,00 €

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

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

    181,00 €

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

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

    185,00 €

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

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

    183,00 €

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

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

    181,00 €

    Article code: ER-BF2RCT-S

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

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

    372,00 €

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

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

    365,00 €

    Article code: ER-AMFDE

  • ExtremaRatio - Kukri KS - Testudo - coltello

    ExtremaRatio - KH Black - Kukri Machete - Messer

    427,00 €
    Erhältlich in 10/15 Tagen

    Article code: ER-KHB

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout Satin - Messer

    168,01 €

  • ExtremaRatio - Glauca J1 Jagdkommando - coltello

    ExtremaRatio - Glauca J1 Jagdkommando - messer

    497,00 €

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

    ExtremaRatio - Scher eingestellt - shaving kit - Pinsel und Rasierer

    774,99 €

    Article code: ER-SHAVING

  • ExtremaRatio - Shrapnel OG Full Handle - Black - coltello

    ExtremaRatio - Task J - Jagdkommando - messer

    367,00 €

    Article code: ER-TASKJ

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Kitchen Talon 8cm - Steak und Tafelmesser

    50,00 €

    Article code: k-talon

  • ExtremaRatio - Ti-Rock Tactical Version - Limited Edition - coltello knife messer couteau cuchillo poignard chiudibile tascabile pieghevole

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

    439,99 €
    SOLD OUT - TERMINATO
  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Verpackung 6 Stück Sector 1 tafelmesser 4cm - Tischmesser

    270,00 €

    Article code: set-sect1

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Verpackung 6 Stück Sector 2 tafelmesser 7cm - Tischmesser

    276,00 €

    Article code: set-sect2

  • ExtremaRatio - Ti-Rock Tactical Version - Limited Edition - coltello knife messer couteau cuchillo poignard chiudibile tascabile pieghevole

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

    439,99 €
    prodotto terminato
  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Sector 2 tafelmesser 7cm - Tischmesser

    50,00 €

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Sector 1 tafelmesser 4cm - Tischmesser

    49,00 €

    Article code: sector1

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - 6 tlg Küchen Talon Messer 8cm - Tischmesser

    276,00 €

    Article code: set-talon

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF0CD - Stone Washed - Messer

    79,00 €

  • ExtremaRatio - Selvans Desert + Survival Kit - coltello

    ExtremaRatio - Selvans Desert + Survival Kit - Messer Überleben

    638,00 €
    Erhältlich in 10/15 Tagen

    Article code: 4355SD

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

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

    169,99 €

    Article code: 12634

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

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

    161,00 €

    Article code: 12635

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

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

    174,00 €

    Article code: 12636

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - Nightmare Karambit - Schwarz - Klappmesser

    260,99 €

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - Nightmare Karambit - Stone Washed - Klappmesser

    245,00 €

    Article code: 12622

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF1 T Tanto Black - Klappmesser

    350,99 €

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF1 D Drop Black - Klappmesser

    350,99 €
    Erhältlich in 10/15 Tagen

    Article code: ER-HF1D

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF2T Tanto Black - Klappmesser

    363,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12614T

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF2D Drop Black - Klappmesser

    363,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12614D

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - MF0T Tanto Black - Klappmesser

    275,00 €
    Erhältlich in 10/15 Tagen
  • ExtremaRatio - Resolza S Black - Klappmesser

    ExtremaRatio - Resolza S Black - Klappmesser

    151,00 €

    Article code: 12079S

  • ExtremaRatio - Resolza L Black - Klappmesser

    ExtremaRatio - Resolza L Black - Klappmesser

    227,01 €

    Article code: 12079L

  • ExtremaRatio - Resolza S Satin - coltello chiudibile

    ExtremaRatio - Resolza S Satin - Klappmesser

    147,00 €

    Article code: 12589

  • ExtremaRatio - Resolza L Satin - Klappmesser

    ExtremaRatio - Resolza L Satin - Klappmesser

    215,00 €

    Article code: 12078L

  • ExtremaRatio - Shrapnel OG Full Handle - Black - coltello

    ExtremaRatio - Shrapnel OG Full Handle - Schwarz - messer

    222,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12553

  • ExtremaRatio - Shrapnel OG Full Handle - Black - coltello

    ExtremaRatio - Fulcrum C Full Handle - Schwarz - messer

    230,99 €

    Article code: 12555

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    Extrema Ratio - Corvo Schwarz - Messer

    286,00 €

    Article code: 12525

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

    Extrema Ratio - Culter Venatorius - Limited Edition - Jagdmesser

    1.085,50 €
    DISCONTINUED
  • ExtremaRatio - Aggancio Sottocamicia per modelli NK1, NK2 ed NK3 - Accessori Fodero

    ExtremaRatio - Kupplung Gürtelclip Tek-Lok-Typ - Messer Zubehör

    24,00 €

    Article code: ER-TEKLOK

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

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

    124,00 €

    Article code: 12448

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

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

    133,00 €

    Article code: 12449

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

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

    147,00 €

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

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

    156,00 €

    Article code: 12451

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

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

    161,00 €

  • ExtremaRatio - Ti-Rock Tactical Version - Limited Edition - coltello knife messer couteau cuchillo poignard chiudibile tascabile pieghevole

    ExtremaRatio - Ti-Rock Tactical Version - Limited Edition - Messer

    395,00 €
    DISCONTINUED
  • ExtremaRatio - Ti-Rock Tactical Version - Limited Edition - coltello knife messer couteau cuchillo poignard chiudibile tascabile pieghevole

    ExtremaRatio - Ti-Rock Tactical Version - Limited Edition - Messer

    549,00 €
    DISCONTINUED
  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - T4000 S Testudo - messer

    266,00 €

    Article code: 12437

  • ExtremaRatio - MF3D BC - Ingredior Drop Testudo - coltello

    ExtremaRatio - MF3D - Ingredior Drop Testudo - messer

    356,00 €

    Article code: 4358D

  • ExtremaRatio - Dobermann IV - Africa

    ExtremaRatio - Dobermann IV - Africa - messer

    581,00 €

  • ExtremaRatio - Dobermann IV - Africa

    ExtremaRatio - Dobermann IV S - Africa - messer

    577,00 €

    Article code: 12384S

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

    Extrema Ratio - A.S.F.K. Kommando der Spezialeinheiten der Armee Italian - ASFK - Messer

    351,99 €

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - T4000 C Testudo - messer

    227,01 €

    Article code: 12381

  • ExtremaRatio - Waki Desert Warfare 30cm. - Coltello da Arrosto

    ExtremaRatio - Waki Desert Warfare 30cm. - Coltello da Arrosto

    345,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12372

  • ExtremaRatio - Dobermann IV - Classic Satin - coltello

    ExtremaRatio - Dobermann IV - Classic Satin - coltello

    410,01 €
    Erhältlich in 10/15 Tagen

    Article code: 12352

  • ExtremaRatio - Mato Grosso - Machete - Coltello

    ExtremaRatio - Waki 30cm. - Coltello da Arrosto

    433,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12320

  • ExtremaRatio - Psycho 15cm. - Coltello da Chef

    ExtremaRatio - Psycho 15cm. - Coltello da Chef

    336,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12321

  • ExtremaRatio - Psycho Desert Warfare 19cm. - Coltello da Chef

    ExtremaRatio - Psycho Desert Warfare 19cm. - Coltello da Chef

    264,00 €

    Article code: 12322

  • ExtremaRatio - Kato 15cm. - Coltello Santoku

    ExtremaRatio - Kato 15cm. - Coltello Santoku

    358,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12323

  • ExtremaRatio - Kato Desert Warfare 15cm. - Coltello Santoku

    ExtremaRatio - Kato Desert Warfare 15cm. - Coltello Santoku

    236,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12324

  • ExtremaRatio - Psycho Desert Warfare 15cm. - Coltello da Chef

    ExtremaRatio - Psycho Desert Warfare 15cm. - Coltello da Chef

    244,00 €

    Article code: 12325

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Psycho 19cm. - Coltello da Chef

    369,00 €
    Erhältlich in 10/15 Tagen

    Article code: 12326

  • ExtremaRatio - T-Razor Testudo - coltello

    ExtremaRatio - T-Razor Testudo - coltello

    211,00 €

    Article code: 12259

  • ExtremaRatio - T-Razor - coltello

    ExtremaRatio - T-Razor - coltello

    228,01 €

    Article code: 12260

  • ExtremaRatio - MF1 Desert Warfare - coltello chiudibile

    ExtremaRatio - MF1 Desert Warfare - coltello chiudibile

    321,99 €
    Erhältlich in 10/15 Tagen

    Article code: 12277

  • ExtremaRatio - Fulcrum S Testudo coltello, knives, messer, cuchillo

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    320,99 €

    Article code: 4252

  • ExtremaRatio - Fulcrum Nibbio - Esercito Italiano - Testudo - coltello

    ExtremaRatio - Baionetta Civile Fulcrum - Testudo - coltello

    440,01 €
    Erhältlich in 10/15 Tagen

    Article code: 12237

  • ExtremaRatio - SKAR

    ExtremaRatio - SKAR - Karambit Collector's Edition - coltello

    330,00 €
    DISCONTINUED
  • ExtremaRatio - SKAR Testudo - Karambit

    ExtremaRatio - SKAR Testudo - Karambit Collector's Edition - coltello

    350,01 €
    DISCONTINUED
  • ExtremaRatio - BF1TK Folder Training Knife - coltello da allenamento

    ExtremaRatio - BF1TK Folder Training Knife - coltello da allenamento

    90,00 €

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