FCS II Matt Biolis MB 2025 Tri Fins

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Design by Matt Biolos and refined by his diverse stable of elite team riders, the new high performance MB fin is an exciting addition to the range.

  • Overview

    Design by Matt Biolos and refined by his diverse stable of elite team riders, the new high performance MB fin is an exciting addition to the range and sits comfortably in the Carver family. 

    Featuring a wide base, curved trailing edge and a tapered tip, this fin is primarily geared for performance power surfing. The bottom half of the fin produces exceptional power and drive, allowing surfers to push hard through turns while maintain a feeling of stability in critical situations. The tip, which narrows significantly from halfway up the fin, offers the freedom and agility to turn abruptly with confidence.

    In contrast to Matt's original upright template (Reactor Family) that was loose and geared for tighter turns in beach breaks, the new MB template offers a balanced blend of drive, power and release that will suit more open-face waves and turns such as carves and power hacks. This fin also pairs particularly well with higher-rocker boards. 

    PC AirCore construction offers a stiffer flex allowing surfers to harness more power and speed when pushing ultra hard through turns.

    • A serious-looking fin for surfers who take their surfing seriously. A no-nonsense performance fin you can use in any of the high-performance Mayhem models.

    • Expect a burst of speed from the first pump down the line, a feeling of stability when laying into a rail carve, and a surprisingly lively release action when pushing turns through the lip.

    Ideal Conditions

    • Open face, down-the-line waves, particularly good in point and reef breaks.

    Board Types

    • Designed to fit the FCS II Fin System.
    • Performance shortboards and hybrid models.

    Fin Family

    • Carver: Find Power. Powerful, drawn-out turns with added hold.
  • SMALL (55Kg - 70Kg / 120 - 155 Lbs)
    MEDIUM (65Kg - 80Kg / 145 - 175 Lbs)
    LARGE (75Kg - 90Kg / 165 - 200 Lbs)

     Fin

    Base (inches)

    Base (mm)

    Depth (inches)

    Depth (mm)

    Area (inches)

    Area  (mm)

    Sweep Deg°

    Foil

    SML Side  4.32 109.7 4.39 111.4 13.87 8950 36.6° Flat
    SML Ctr 4.32 109.7 4.39 111.4 13.87 8950 36.6° 50/50
    MED Side 4.50 114.1 4.57 116.1 15.05 9712 36.6° Flat
    MED Ctr 4.50 114.1 4.57 116.1 15.05 9712 36.6° 50/50
    LRG Side 4.69 119.0 4.76 120.9 16.32 10526 36.6° Flat
    LRG Ctr 4.69 119.0 4.76 120.9 16.32 10526 36.6° 50/50

BUY these fins, TRY them, and DECIDE if you want to keep them. If not, return them within 30 days for a full refund. There are a few rules See Full Details HERE!

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Design by Matt Biolos and refined by his diverse stable of elite team riders, the new high performance MB fin is an exciting addition to the range.

  • Overview

    Design by Matt Biolos and refined by his diverse stable of elite team riders, the new high performance MB fin is an exciting addition to the range and sits comfortably in the Carver family. 

    Featuring a wide base, curved trailing edge and a tapered tip, this fin is primarily geared for performance power surfing. The bottom half of the fin produces exceptional power and drive, allowing surfers to push hard through turns while maintain a feeling of stability in critical situations. The tip, which narrows significantly from halfway up the fin, offers the freedom and agility to turn abruptly with confidence.

    In contrast to Matt's original upright template (Reactor Family) that was loose and geared for tighter turns in beach breaks, the new MB template offers a balanced blend of drive, power and release that will suit more open-face waves and turns such as carves and power hacks. This fin also pairs particularly well with higher-rocker boards. 

    PC AirCore construction offers a stiffer flex allowing surfers to harness more power and speed when pushing ultra hard through turns.

    • A serious-looking fin for surfers who take their surfing seriously. A no-nonsense performance fin you can use in any of the high-performance Mayhem models.

    • Expect a burst of speed from the first pump down the line, a feeling of stability when laying into a rail carve, and a surprisingly lively release action when pushing turns through the lip.

    Ideal Conditions

    • Open face, down-the-line waves, particularly good in point and reef breaks.

    Board Types

    • Designed to fit the FCS II Fin System.
    • Performance shortboards and hybrid models.

    Fin Family

    • Carver: Find Power. Powerful, drawn-out turns with added hold.
  • SMALL (55Kg - 70Kg / 120 - 155 Lbs)
    MEDIUM (65Kg - 80Kg / 145 - 175 Lbs)
    LARGE (75Kg - 90Kg / 165 - 200 Lbs)

     Fin

    Base (inches)

    Base (mm)

    Depth (inches)

    Depth (mm)

    Area (inches)

    Area  (mm)

    Sweep Deg°

    Foil

    SML Side  4.32 109.7 4.39 111.4 13.87 8950 36.6° Flat
    SML Ctr 4.32 109.7 4.39 111.4 13.87 8950 36.6° 50/50
    MED Side 4.50 114.1 4.57 116.1 15.05 9712 36.6° Flat
    MED Ctr 4.50 114.1 4.57 116.1 15.05 9712 36.6° 50/50
    LRG Side 4.69 119.0 4.76 120.9 16.32 10526 36.6° Flat
    LRG Ctr 4.69 119.0 4.76 120.9 16.32 10526 36.6° 50/50

BUY these fins, TRY them, and DECIDE if you want to keep them. If not, return them within 30 days for a full refund. There are a few rules See Full Details HERE!

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