FCS II Reactor PC Thruster Fin Set – Size Large – White Edition
The FCS II Reactor PC Thruster Fin Set – Size Large – White Edition is built for surfers who want speed, tight turns, and quick tail release—especially in punchy beach break conditions. Featuring an upright Reactor template and lightweight Performance Core (PC) construction, this set is tuned for fast, progressive surfing where rapid direction changes and snappy turns are the goal.
When you purchase these fins from Rider Shack, you’re supporting a small, family-owned core surf shop operated by surfers who are passionate about sharing the love of surfing and the ocean.
Overview
The Reactor is part of the FCS “Beach Break” fin family—designed specifically for surfers who like to surf in the pocket, generate speed quickly, and fit tighter turns into steeper sections. The template is more upright for sharper, more acute direction changes, and it features a smaller center fin to increase pivot and loosen up the tail.
- Fin Model: FCS II Reactor
- Fin Family: Reactor – Find Speed
- Set Type: Thruster (3-fin set)
- Material: Performance Core (PC)
- Color: White (FCS II White Edition)
- Size: Large
- Fin System: FCS II
FCS II White Edition
The FCS II Essential Series White Edition combines proven fin performance with a clean, timeless look. Inspired by classic white fixed fins, the all-white aesthetic pairs with any surfboard—no color clashing, no second-guessing, just a simple style that always works.
Performance & Design
Reactor Template: Speed, Tight Turns & Snaps
The Reactor’s upright outline is made for surfers who want fast, responsive changes in direction. It’s ideal for beach break surfing where you’re constantly adjusting your line and attacking quick sections. The smaller center fin increases pivot and tail release, helping you surf more progressively without feeling locked in.
- Designed for speed and tight turns with added tail release.
- Upright template supports sharper, more acute directional changes.
- Smaller center fin increases pivot and looseness off the tail.
- Ideal for surfers who like fast, progressive turns and snaps.
Performance Core Construction
Performance Core (PC) fins are made using a multi-layered resin transfer molding process. The flex pattern extends progressively from the base through the tip, helping maintain drive and hold through turns while keeping the fin light and versatile across varied conditions.
- Lightweight build with a controlled, progressive flex pattern.
- Maintains drive and hold through powerful turns.
- Versatile performance feel across a variety of surf.
Ideal Conditions
The Reactor excels in hollow waves and is especially well-suited to beach breaks, where quick reactions, fast transitions, and tight arcs are essential.
Board Compatibility
- Fin System: Designed to fit the FCS II Fin System
- Board Types: Recommended for performance shortboards with moderate-to-low rocker
Size & Specifications
Recommended Rider Weight – Size Large
- Weight Range: 75–90 kg (165–200 lbs)
Fin Dimensions (Large)
Side Fins
- Base: 4.44" (112.8 mm)
- Depth: 4.65" (117.9 mm)
- Area: 16.00 in² (10,324 mm²)
- Sweep: 32.0°
- Foil: Flat
Center Fin
- Base: 4.39" (111.4 mm)
- Depth: 4.52" (114.8 mm)
- Area: 14.99 in² (9,672 mm²)
- Sweep: 31.0°
- Foil: 50/50
Why Choose the FCS II Reactor?
- Built for speed, tight arcs, and quick tail release.
- Excellent for beach breaks and hollow, punchy waves.
- Smaller center fin increases pivot for progressive surfing.
- Performance Core construction balances flex, drive, and hold.
- FCS II tool-less installation for fast swaps between sessions.
- Clean White Edition look that matches any board.
Why Buy from Rider Shack?
Rider Shack is a small, family-owned core surf shop run by surfers who care about getting you on the right gear. Every purchase supports real surf knowledge, quality products, and a local community built around the ocean.
FAQ
What style of surfing are the Reactor fins best for?
Reactor fins are designed for surfers who want speed, tight turns, and quick snaps, with a feel that encourages fast, progressive maneuvers—especially in beach break conditions.
What boards are these fins recommended for?
These fins are designed for the FCS II fin system and are recommended for performance shortboards with moderate-to-low rocker.
What surfer weight is size Large recommended for?
Size Large is recommended for surfers weighing approximately 165–200 lbs (75–90 kg).
What’s the benefit of the smaller center fin?
The Reactor features a smaller center fin to increase pivot and tail release, making the board feel more responsive and easier to snap through tight sections.
Do these fins require tools for installation?
No. The FCS II system allows for tool-less installation and removal, making fin swaps quick and easy.
