• Extrema Ratio BF2 R folding knife

Extrema Ratio BF2 R folding knife

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Extrema Ratio BF2 R folding knife

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The BF2 R folding knife, featuring a signature Speed Razor Opening system, is one of the many and interesting new products launched this year by premier Italian knifemaking company Extrema Ratio

Speed Razor Opening System: the opening system of the new Extrema Ratio BF2 R knife is very similar to that typically found on a straight razor

Speed Razor Opening System: the opening system of the new Extrema Ratio BF2 R knife is very similar to that typically found on a straight razor

Normally, a friction folder knife is a type of knife whose blade flicks open by a push of the finder on a tang of the blade that protrudes just a few centimetres from the handle when it's folded.

Once the blade is open, the pressure of the finger on the tang of the of the blade will keep it open: that's basically how a typical straight razor works.

This peculiar type of "manual blade lock" has its roots in the Japanese knifemaking – more specifically in the "Higonokami" design.

VIDEO / Extrema Ratio BF2 R foldable knife

The Extrema Ratio BF2 R knife cocks open by pushing on the blade tang, just like a straight razor

The Extrema Ratio BF2 R knife cocks open by pushing on the blade tang, just like a straight razor

Friction folder designs are recently being revamped, with new models being launched by small and traditional knifemakers as well as by some of the biggest and most important manufacturers in the field, both for reasons of style and aesthetics and to satisfy the needs of those users living in Countries where automatic or assisted opening blades are forbidden to carry or even to own.

The well-known, premier Italian knifemaker Extrema Ratio pushed the boundaries by implementing a friction-folding blade in a more performing instrument: a tactical folding knife for combat and defensive purposes. What they did was basically to implement a straight razor-type folding blade on one of their best known knifes: the Basic Folder 2.

Thanks to its signature High Speed Razor Opening system (also found on the Company's own T-Razor model), the Extrema Ratio BF2 R foldable knife provides lightning-fast deployment of the blade in a quite unusual way for a pocket knife: the tang protrudes from the rear portion of the blade enough to be comfortable to operate when wearing heavy, thick gloves, or by pushing it against your own clothes if need be.

With the blade folded, the protruding tang allows the knife to be used as a blunt defensive tool in the guise of a Kubotan or a Yawara stick.

With its blade deployed, the Extrema Ratio BF2 R knife ensures total handling safety thanks to the two, redundant safety systems already found on the Basic Folder 2 model: a classic liner-lock system and a manual safety switch that locks the blade in the open position.

The blade of the Extrema Ration BF2 R knife is manufactured out of Böhler N690 steel that's tempered to a 58 HRC hardness level; it's 9 cm / 3.54-inch long, 3 mm / 0.11" thick, and is available in a drop point or a Tanto variant.

In both cases, the Extrema Ratio BF2 R is a single-edged knife; the top portion of the blade is lightened to simulate a second edge, improving the overall aesthetics of the design.

When the blade is open, its tang rests within the handle

When the blade is open, its tang rests within the handle

A close-up of the liner-lock that holds the blade open

A close-up of the liner-lock that holds the blade open

A red, manual safety switch can be used to lock the blade in the open position

A red, manual safety switch can be used to lock the blade in the open position

The Extrema Ratio BF2 R knife in its 'Desert Warfare' variant

The Extrema Ratio BF2 R knife in its 'Desert Warfare' variant

The Extrema Ratio BF2 R knife in a black MIL-C-13924 finish

The Extrema Ratio BF2 R knife in a black MIL-C-13924 finish

The Extrema Ratio BF2 R knife with a stone-washed blade and belt clip

The Extrema Ratio BF2 R knife with a stone-washed blade and belt clip

The Extrema Ratio BF2 R knife is available in six different versions

The Extrema Ratio BF2 R knife is available in six different versions

The different sides of the belt clip, installed on the grip by Allen screws

The different sides of the belt clip, installed on the grip by Allen screws

The Extrema Ratio BF2 R folding knife is available in three different finish options: the Desert Warfare model offers an overall desert tan color with darker brown bands on the blade, but a Stone-washed version and a classic MIL-C-13924 black variant are also available.

The grip of the Extrema Ratio BF2 R knife is manufactured out of Anticorodal machined aluminum, hard-anodized in matte black or desert tan, and is big enough to ensure a safe and positive handling even when wearing gloves.

On the right side of the grip, under the blade pivot, a red safety switch allows to lock the blade in the open position. On the terminal upper portion of the grip, three small Allen screws hold a steel pocket clip in place.

The main features of the Extrema Ratio BF2 R folding knive

The main features of the Extrema Ratio BF2 R folding knive

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Extrema Ratio BF2 R - Technical specs

Manufacturer
Model
Typology

Foldable knife

Opening

“High Speed Razor Opening”

Blade lock

Liner Lock, manual safety sicura

Use

Tactical, EDC

Blade lenght

90 mm / 3.54"

Overall length

215 mm / 8.46"

Blade thickness

3 mm / 0.11"

Blade design

Tanto, Drop Point

Sharpening

Straight edge

Weight

140 g / 4,93 oz

Materials / Finishes

Böhler N690 (58HRC) steel blade

Blade finish

MIL-C-13924 black, Desert Warfare, or Stone washed

Grip

Black hard-anodized aluminum

Price

Consult your dealer for local availability and pricing

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Extrema Ratio BF2 R: the folding knife that opens like a straight razor!