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The FCS II Matt Biolos PC Carbon Tri Fin Set was designed by revered shaper Matt "Mayhem" Biolos. Same proven template with a new look. The MB template offers freedom to perform tight turns in the pocket with an emphasis on speed. Sitting in the reactor family, the MB is considered a high performance fin because it responds incredibly fast, but still offers enough control so you can confidently lay into a turn with plenty of force. Ideal for a wide range of conditions, particularly good in critical overhead waves. Designed to fit the FCS II Fin System and recommended for performance shortboards and hybrid models.
| Size | Height | Base | Area | Sweep | Foil |
| Small | 4.19" | 4.46" | 13.71"² | 32.0° | Flat |
| Medium | 4.30" | 4.59" | 14.49"² | 31.9° | Flat |
| Large | 4.41" | 4.74" | 15.26"² | 31.9° | Flat |
Ships within 48 hours · Estimated delivery Jun 26 - Jul 1
US$40
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