FCS II Christenson Performance Glass Twin Fins + 1

The FCS II Christenson Performance Glass Twin Fins + 1 is a refined twin setup designed for surfers looking for a fast, controlled feel across a wide range of board shapes. Built around Chris Christenson’s performance-oriented template, this set combines the natural speed of a twin fin with the added confidence of a centre stabiliser, making it a versatile option for both modern twin designs and more traditional outlines.

The side fins are tuned for smooth down-the-line speed, with a template that draws from keel-inspired design cues while staying focused on cleaner, more performance-driven surfing. A full tip, straighter trailing edge, and pronounced sweep help create a fluid, composed feel through longer arcs and open-face turns. The result is a twin setup that generates speed easily but remains settled when pressure is applied through turns.

The addition of the centre stabiliser gives the set more drive and predictability, especially when pushing off the bottom or holding a line through steeper sections. Its wide base and rounded tip work in balance with the side fins to add control without losing the twin fin’s lively character. This makes the set a strong choice for surfers who want the freedom and speed of a twin, but with a more reliable and connected feel underfoot.

Compatible with the FCS II Fin System, the Christenson Twin + 1 is suited to a broad mix of boards, including fish, funboards, and dedicated twin fin shapes. It is designed to complement specific Christenson models, but its balanced template also translates well across many other surfboards in the same category.

Constructed in Performance Glass, the fins are machine cut from layers of solid fiberglass for a stiff, consistent flex pattern. This construction is valued for maintaining its integrity under heavy load and in demanding conditions, giving the set a precise, dependable response when surfed hard.

• Fin setup, Twin + 1 with centre stabiliser
• System, Designed to fit the FCS II Fin System
• Feel, Smooth, fast down-the-line speed with fluid, controlled turning
• Side fin design, Full tip, straighter trailing edge, high sweep
• Stabiliser design, Wide base, rounded tip, tuned for added drive and predictability
• Board compatibility, Fish, funboards, and twin fin boards
• Construction, Performance Glass
• Performance Glass details, Machine cut from layers of solid fiberglass, stiff flex with high integrity under force
• Positioning, Suitable for high-performance twin fin designs and traditional fish shapes