STCo Fiberglass Keel Fins – Hand-Finished Twin-Fin Set, Futures Compatible

Overview

Classic keel style. Modern refinement. More speed and drive.

The STCo Fiberglass Keel Fins are designed for surfers who want speed, control, and smooth, flowing turns from their twin-fin surfboard. Inspired by the classic keel fin outline with modern refinements, these fins combine traditional twin-fin character with hand-finished fiberglass construction.

Their stiff flex profile is designed to provide a direct, controlled feel through turns while supporting drive and trim across the wave face. Suitable for compatible modern and retro-inspired twin-fin boards, the STCo Keel Fins offer a versatile option for surfers who enjoy maintaining speed and drawing sweeping lines.

Key Features & Benefits

• Classic Keel-Inspired Outline: Traditional styling with modern refinements for twin-fin surfboards.

• Hand-Finished Fiberglass Construction: Combines fiberglass construction with a carefully finished appearance.

• Stiff Flex Profile: Designed to deliver a firm, controlled response.

• Speed and Drive: Supports momentum and drive along the wave face.

• Smooth, Sweeping Turns: Suited to flowing turns and sustained trim.

• Control and Stability: Designed to balance directional control with speed-oriented performance.

• Futures Fin-Box Compatibility: Made for compatible Futures fin boxes.

• Suitable for All Skill Levels: An option for beginners through experienced surfers when matched to the right board and setup.

Speed Across the Wave

The keel-inspired outline is designed to support momentum and drive, making these fins a strong match for surfers who enjoy moving quickly down the line.

Flowing Turns and Trim

The classic profile is intended for smooth, sweeping turns and sustained trim, complementing the relaxed yet powerful feel of twin-fin surfing.

Stiff, Direct Response

The stiff flex profile suits surfers who prefer a firmer fin feel. Actual performance depends on the fin dimensions, board design, rider technique, and wave conditions.

Hand-Finished Fiberglass

Fiberglass construction and hand finishing give these fins a refined appearance suited to both modern and retro-inspired surfboard designs.

Technical Specifications

Compatibility & Installation

These fins are designed for compatible Futures fin boxes. Confirm the fin-base type and dimensions required by your surfboard before ordering, as fin systems are not universally interchangeable.

Install the fins using compatible mounting hardware and follow the surfboard manufacturer's instructions. Check that both fins are securely fitted before entering the water.

Complete Your Twin-Fin Setup

Choose the STCo Fiberglass Keel Fins for a classic-inspired design focused on speed, drive, control, and smooth, flowing turns.