FCS II AM PG Medium Thruster Fin Set

The FCS II Al Merrick Medium PG Pro Tri Fin Set is built for radical, progressive surfing and designed to match the high-performance demands of the world’s best surfers. This signature template by Al Merrick delivers a powerful combination of speed, drive, and precision control—ideal for deep carves and explosive maneuvers in hollow, fast-breaking waves.

Featuring raked side fins for down-the-line speed and hold, the medium-size set also includes a smaller center fin that enables quicker tail release through turns. This creates the perfect balance between drawn-out power and reactive control, making this fin set a go-to for surfers who love aggressive turns and quick transitions.

Crafted using Performance Glass (PG) construction, these fins are machine-cut from solid fiberglass layers, offering pro-level stiffness, durability, and extremely fast memory response. PG fins maintain flex integrity under high pressure, making them the trusted choice for advanced surfers charging in heavy, demanding conditions.

Best suited for performance shortboards with deep concaves and moderate-to-extreme rocker profiles, this fin set excels in steep, punchy surf where power and control are non-negotiable.

Key Features:

• Template: Raked side fins for speed and drive; smaller center fin for fast release
• Construction: Performance Glass – stiff, durable, and pro-level performance
• Ideal Conditions: Hollow, steep waves and punchy beach breaks
• Fin Setup: FCS II Tri Fin – tool-less, snap-in system
• Best For: High-performance boards with deep concaves and rocker

Medium Size Fin Specs:

• MED Side Fins: Base – 4.57″ / 116.0 mm | Depth – 4.53″ / 115.0 mm | Area – 14.89 in² / 9608 mm² | Sweep – 36.6° | Foil – Flat
• MED Center Fin: Base – 4.33″ / 110.0 mm | Depth – 4.41″ / 112.0 mm | Area – 13.72 in² / 8852 mm² | Sweep – 35.0° | Foil – Flat

Fin Family – Carver:

Power. Hold. Drive. The Al Merrick PG Pro Set belongs to the Carver family, designed for powerful, drawn-out turns with maximum hold and drive. Ideal for surfers who push hard through rail turns and need reliable fins in steep, fast surf.

The FCS II Al Merrick Medium PG Pro Tri Fin Set is a trusted option for surfers looking to unlock speed, strength, and precision in every turn—delivering explosive performance in high-energy conditions.

Why Shop at Rider Shack?

We’re a small, family-run surf shop passionate about providing gear that works as hard as you do in the water. At Rider Shack, we only stock fins and equipment we trust, use, and stand behind. Whether you’re chasing performance or refining your setup, we’re here to help you ride better and stay stoked.

Take your surfing to the next level with the FCS II Al Merrick Medium PG Pro Tri Fin Set—built for power, control, and high-performance lines.