Developed in conjunction with US shaper Matt Biolos.
Available in S, M and L sizes. (M + L = Tri or Tri-Quad options)
Same template scaled across three sizes.
Flat foil on the side fins, 80/20 foil on the quad rears.
Customised graphics tie back to the LOST brand.
Sitting in the Reactor Family, the FCS II 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. With noticeable geometric similarities to the Performer template, but with less sweep, it has a balanced outline with smooth curves and moderate area in the tip. The fin also has a relatively short base in contrast to the higher depth value of the fin. The same template features across all three sizes.