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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.

Items 1 to 80 of 213 total

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  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Nimbus Black Ordinanza - Knife

    €273.77
    Disponibile dal 30/05

    Article code: ER-NIMBUSOR

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Nimbus Black Operative - knife

    €236.89

    Article code: ER-NIMBUSOP

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD2 R Satin - knife

    €132.79

    Article code: ER-BD2R

  • Extremaratio - Venom

    Extremaratio - Venom Stone Washed Half Serrated - Knife

    €259.02

  • ExtremaRatio - S.E.R.E.1 - coltello - Extrema Ratio Sere 1

    ExtremaRatio - SERE 2 - GOI Gruppo Operativo Incursori - rescue knife

    €313.11

    Article code: ER-SERE2

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

    ExtremaRatio - Fulcrum Bayonet knife NFG Desert SW - knife

    €239.34

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD2 Lucky Desert knife - knife

    €127.05

    Article code: ER-BD2-D

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD2 Lucky Black knife - knife

    €134.43

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Leucoton Black - knife

    €243.44

    Article code: ER-LEUCO

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - N.K. Steel Talon - Neck Knife - NKST - Knife

    €118.85

    Article code: ER-NKST

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BD0 R - Black - Stone Washed - knife

    €68.03

    Article code: ER-BD0RBK

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BD0 R - HCS - Stone Washed - knife

    €68.03

    Article code: ER-BD0RHC

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BD0 R - Ranger Green - Stone Washed - knife

    €68.03

    Article code: ER-BD0RRG

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BD0 R - Desert - Stone Washed - knife

    €68.03

    Article code: ER-BD0RDE

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD4 Lucky Desert - knife

    €136.07

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BF4 Lucky Black - knife

    €144.26

    Article code: ER-BD4LB

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Shrapnel One Knife - Knife

    €188.52

    Article code: ER-SH-ONE

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD4 R knife Satin - knife

    €141.80

    Article code: ER-BD4R

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

    Extremaratio - Arditi Black - Single-edged dagger - knife

    €306.56

    Article code: ER-AR-B

  • ExtremaRatio - 185° RAO - coltello

    ExtremaRatio - 185° RAO - 2018 Version - heavy folding knife

    €300.82

    Article code: 4247

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF0 R CD - Stone Washed - knife

    €66.39

  • ExtremaRatio, BF1CD, Drop Point, coltello

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

    €66.39

    Article code: BF0-R-CD-DW

  • Extremaratio - Fulcrum II T - rough handle - Tanto - knife

    Extremaratio - Fulcrum II T - rough handle - Tanto - knife

    €309.84
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: 4146R

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF1CD Desert Warfare - Drop Point - knife

    €145.90

    Article code: ER-BF1CD-DW

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Requiem Wolf Gray - tactical knife

    €122.95

    Article code: ER-REQ-WG

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Requiem Ranger Green - tactical knife

    €122.95

    Article code: ER-REQ-RG

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Requiem Desert - tactical knife

    €122.95

    Article code: ER-REQ-DE

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Requiem HCS - tactical knife

    €122.95

    Article code: ER-REQ-HC

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Requiem Black - tactical knife

    €131.97

    Article code: ER-REQ-BK

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Mamba Wolf Gray - tactical knife

    €123.77

    Article code: ER-MAM-WG

  • ExtremaRatio - T-Razor - coltello

    ExtremaRatio - Panthera Satin - folding knife

    €201.64

    Article code: ER-PAN-SA

  • ExtremaRatio - T-Razor - coltello

    ExtremaRatio - Panthera Black - folding knife

    €186.07

    Article code: ER-PAN-BL

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF1CD - Damascus Coreless - Limited Edition - knife

    €192.62

    Article code: ER-BF1CD-C

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 Stone Washed - Knife

    €173.77
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: ER-DEF2SW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 DG Stone Washed - Knife

    €176.23

    Article code: ER-DEF2DGSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 Black - Knife

    €194.26

    Article code: ER-DEF2BL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 DG Black - Knife

    €196.72

    Article code: ER-DEF2DGBL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender Stone Washed - Knife

    €168.85

    Article code: ER-DEFSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender DG Stone Washed - Knife

    €172.95

    Article code: ER-DEFDGSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender Black - Knife

    €190.98

    Article code: ER-DEFBL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender DG Black - Knife

    €193.44

    Article code: ER-DEFDGBL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout Black - knife

    €162.30

    Article code: 12656

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout 2 Black - knife

    €165.57
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: 12658

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout 2 Satin - knife

    €145.08
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: 12659

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Mamba Desert - tactical knife

    €123.77

    Article code: ER-MAM-DE

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Mamba HCS - tactical knife

    €123.77

    Article code: ER-MAM-HC

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Mamba Ranger Green - tactical knife

    €123.77

    Article code: ER-MAM-RG

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Mamba Black - tactical knife

    €133.61

    Article code: ER-MAM-BK

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

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

    €158.20

    Article code: ER-BF2RCD-B

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

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

    €153.28

    Article code: ER-BF2RCD-D

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

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

    €151.64

    Article code: ER-BF2RCD-S

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

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

    €158.20

    Article code: ER-BF2RCT-B

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

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

    €153.28

    Article code: ER-BF2RCT-D

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

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

    €154.92
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: ER-BF2RCT-S

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

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

    €318.03

    Article code: ER-AMFBL

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

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

    €312.30

    Article code: ER-AMFDE

  • ExtremaRatio - Kukri KS - Testudo - coltello

    ExtremaRatio - KH Black - Kukri Machete - knife

    €357.38
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: ER-KHB

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout Satin - knife

    €140.98

    Article code: 12657

  • ExtremaRatio - Glauca B1 G.I.G.N

    ExtremaRatio - Glauca J1 Jagdkommando - knife

    €415.57
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: ER-GLAJ1

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Task J - Jagdkommando - knife

    €307.38

    Article code: ER-TASKJ

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Kitchen Talon 8cm - Steak anb table knife

    €40.98

    Article code: k-talon

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Packaging 6 pieces Sector 1 table knife 4cm - Table knife

    €221.31

    Article code: set-sect1

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Packaging 6 pieces Sector 2 table knife 7cm - Table knife

    €226.23

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Sector 2 table knife 7cm - Table knife

    €40.98

    Article code: sector2

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - Sector 1 table knife 4cm - Table knife

    €40.16

    Article code: sector1

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

    ExtremaRatio - set 6 pcs Kitchen Talon knife 8cm - Table knives

    €226.23
    Available in 7 days (subject to availability in the manufacturer's warehouses)

    Article code: set-talon

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF0CD - Stone Washed - knife

    €66.39

    Article code: 12645

  • ExtremaRatio - Selvans Desert + Survival Kit coltello machete

    ExtremaRatio - Selvans Desert + Survival Kit - survival knife

    €533.61
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: 4355SD

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

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

    €142.62

    Article code: 12634

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

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

    €135.25

    Article code: 12635

  • ExtremaRatio - Kreios - Heavy Utility Machete - Coltello

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

    €145.90

    Article code: 12636

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - Nightmare Karambit - Black - folding knife

    €218.85
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: 12621

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - Nightmare Karambit - Stone Washed - folding knife

    €204.92
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: 12622

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF1 T Tanto Black - folding knife

    €293.44
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: ER-HF1T

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF1 D Drop Black - folding knife

    €293.44
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: ER-HF1D

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF2T Tanto Black - folding knife

    €304.10
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: 12614T

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - HF2D Drop Black - folding knife

    €304.10
    Available in 10/15 days (subject to availability in the manufacturer's warehouses)

    Article code: 12614D

  • ExtremaRatio - MF0 - coltello chiudibile

    ExtremaRatio - MF0T Tanto Black - folding knife

    €230.33
    available in about 10/15 days
  • ExtremaRatio - Resolza S Black - coltello chiudibile, knife, couteau, cuchillo, messer

    ExtremaRatio - Resolza S Black - folding knife

    €126.23

    Article code: 12079S

  • ExtremaRatio - Resolza L Black - coltello chiudibile, messer, couteau, cuchillo, knife, pattada

    ExtremaRatio - Resolza L Black - folding knife

    €190.16

    Article code: 12079L

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