FCS II Kelia Moniz 9.75" Longboard Fin

The FCS II Kelia Moniz 9.75" Longboard Fin is the signature fin of Hawaiian World Champion Kelia Moniz, combining a timeless single-fin template with the control, drive and flow required for stylish traditional longboarding.

With a nod to the classic designs of George Greenough, the Kelia Moniz fin has a beautifully balanced template designed for controlled trimming, steady drive off the bottom and smooth arcing turns. At 9.75", it's a versatile single fin suited to most traditional longboards.

Classic, Balanced Longboard Template

The Kelia Moniz isn't an extreme pivot fin or heavily raked performance fin. Instead, FCS has created a well-balanced all-round template that allows the board to flow naturally through different parts of the wave.

The shape provides the stability needed when you're trimming and moving around your longboard, while its moderate rake allows the board to transition smoothly through longer, drawn-out turns.

This makes it a great option for surfers whose longboarding combines cross-stepping, trimming, noseriding and flowing turns from the tail.

Inspired by George Greenough

The template takes design cues from the influential single-fin designs associated with George Greenough.

That heritage can be seen in the fin's balanced combination of base, rake and relatively refined tip — creating a fin designed to generate drive while still allowing the board to roll smoothly from rail to rail. FCS specifically describes the template as providing controlled trim, steady bottom-turn drive and smooth arcing turns.

Performance Glass Construction

The Kelia Moniz fin is constructed from FCS Performance Glass (PG).

Performance Glass fins are machine-cut from layers of solid fibreglass, producing a stiff and responsive fin that maintains the integrity of its flex when placed under significant load.

For longboarding, this creates a solid connection between surfer and board with predictable response when you're putting pressure through the fin during bottom turns, trimming and directional changes.

Made for Traditional Longboards

FCS recommends the 9.75" Kelia Moniz for most traditional longboards.

Its combination of depth, area and moderate sweep makes it particularly suited to surfers looking for one versatile longboard fin rather than a highly specialised noseriding or performance template.

It's a strong choice for traditional logs, single-fin longboards and classic longboard shapes where smooth flow and control are more important than aggressive directional changes.

FCS II Tool-Less Longboard System

The fin uses the FCS II Tool-Less Longboard System, eliminating the traditional plate and screw.

You can insert or remove the fin without a fin key and even reposition it within the fin box during a surf. The system is designed to work with most existing longboard fin boxes without requiring a new box.

This also makes experimenting with fin placement particularly easy — move it forward for a looser feel or further back when you're looking for additional hold and stability.

Kelia Moniz 9.75" Fin Specifications

• Size: 9.75"
• Base: 7.11" / 180.4mm
• Depth: 9.75" / 247.5mm
• Area: 39.56 sq in / 25,523mm²
• Sweep: 33.8°
• Foil: 50/50
• Construction: Performance Glass
• Fin System: FCS II Tool-Less Longboard

Multiple Colour Options

FCS produces the Kelia Moniz 9.75" in a selection of colours personally chosen by Kelia.

Since you have multiple colours on the same FlowState product page, I'd simply let customers select their preferred colour from the variants rather than naming an individual colour in the main SEO copy.

Perfect For

Traditional longboards, single-fin longboards, classic logs, trimming, cross-stepping, noseriding, smooth bottom turns and flowing rail-to-rail longboard surfing.

Why You'll Love It

The strength of the FCS II Kelia Moniz 9.75" Longboard Fin is its versatility.

Rather than being designed exclusively for noseriding or aggressive performance surfing, its classic balanced template provides a combination of hold, drive and smooth release that works across the different elements of traditional longboarding.

The 9.75" size, 50/50 foil and 33.8° sweep give you enough fin for confident trimming and control while retaining the ability to draw smooth, flowing turns from the tail.

For surfers looking for a premium longboard single fin in New Zealand, the Kelia Moniz 9.75" is an excellent option for traditional longboards and surfers who prioritise flow, trim and style.