JS Thruster

These fins are designed for performance shortboards, particularly those with deep concaves and moderate-to-extreme rocker. They are engineered to complement boards that require extra drive and hold in more critical, open-face conditions.

The progressive flex pattern allows the fin to load up energy at the base during a turn and release it smoothly from the tip. This creates a consistent, predictable feel that helps you maintain speed through turns without the fin feeling too stiff or too loose.

Yes, these utilize the FCS II system, which is designed for tool-less installation. They are backward compatible with original FCS plugs if you use the appropriate grub screws, but they are optimized for the click-in FCS II boxes.

They excel in open-face, down-the-line waves, making them a standout choice for point and reef breaks. While they can handle beach breaks, their design is specifically tuned for longer, more drawn-out lines rather than quick, punchy shorebreak turns.

The multi-layered resin transfer molding process creates a lightweight fin with a very specific flex memory. This construction balances durability with a responsive feel, ensuring the fins don't lose their shape or 'pop' over time.