FCS II Christenson Longboard Fin

The FCS II Christenson Longboard Fin is a versatile single fin designed in collaboration with renowned surfboard shaper Chris Christenson. With sizes ranging from 7.5" through to 9.5", the same beautifully balanced template can be matched to everything from a smaller mid-length through to a traditional longboard or everyday log.

FCS describes the Christenson as a well-balanced longboard fin with moderate area through the middle and a narrow tapered tip, providing greater turning ability. Its lower sweep creates smooth arcs and cutbacks while maintaining effortless down-the-line speed.

From Mid-Lengths to Traditional Longboards

One of the biggest strengths of the Christenson fin is the range of sizes available.

FCS recommends the 7.5", 8" and 8.5" sizes for mid-length surfboards, while the larger 9" and 9.5" fins are designed for traditional longboards and everyday logs.

This gives you the ability to choose the amount of hold and drive that best suits your board rather than trying to make one fin size work across completely different surfboard designs.

Which FCS Christenson Fin Size?

7.5" – Smaller Mid-Lengths
The smallest Christenson longboard fin is designed for mid-length surfboards where you want the smooth feel of a single fin without overpowering a smaller board.

8" – Versatile Mid-Length Fin
A great all-round choice for mid-length surfboards. The 8" provides increased hold and drive while retaining plenty of manoeuvrability.

8.5" – Larger Mid-Lengths
The largest of the sizes FCS recommends specifically for mid-lengths. A good option for longer mid-length boards or surfers wanting additional hold from their single-fin setup.

9" – Everyday Longboards & Logs
The 9" moves into dedicated longboard territory. FCS recommends this size for everyday logs, offering a versatile balance of drive, hold and turning ability.

9.5" – Traditional Longboards & Logs
The largest current size provides additional area and hold for bigger traditional longboards and logs while retaining the flowing character of the Christenson template.

Performance Glass Construction

The Christenson Longboard Fin uses Performance Glass (PG) construction.

FCS machine-cuts Performance Glass fins from layers of solid fibreglass, creating a stiff fin that maintains the integrity of its flex under significant force. This provides a predictable and responsive feel when loading the fin through turns.

Smooth, Flowing Single-Fin Performance

The Christenson isn't an extremely upright pivot-style noseriding fin.

Instead, its combination of moderate area, tapered tip and 33.3° sweep produces a versatile single-fin feel with smooth turning arcs, drive and effortless down-the-line speed.

That makes it particularly appealing for surfers who enjoy linking turns together, trimming down the line and surfing their mid-length or longboard with a smooth, flowing style.

FCS II Tool-Less Longboard System

The FCS II Longboard system makes installing and adjusting your fin simple. The system eliminates the need for a traditional plate and screw, allowing compatible fins to be inserted, removed or repositioned without a fin key.

It's designed to work with most existing longboard fin boxes, making it easy to experiment with fin position and tune the way your board performs.

Size & Fin Specifications

These are FCS's current published specifications for the Christenson Longboard Fin.

Features

• Chris Christenson signature single fin
• Available in 7.5", 8", 8.5", 9" and 9.5"
• Performance Glass construction
• Moderate area through the middle
• Narrow tapered tip
• 33.3° sweep
• 50/50 foil
• Smooth, flowing turning characteristics
• Good drive and down-the-line speed
• 7.5"–8.5" designed for mid-lengths
• 9"–9.5" suited to traditional longboards and logs
• FCS II tool-less longboard system
• Designed to fit most existing longboard fin boxes

Perfect For

Mid-length surfboards, single-fin mid-lengths, traditional longboards, everyday logs, classic single-fin surfing, trimming, flowing rail turns and surfers wanting a versatile fin rather than a dedicated upright pivot fin.

Why You'll Love It

The FCS II Christenson Longboard Fin gives you a beautifully versatile template that can work across a surprisingly broad range of surfboards.

Go 7.5", 8" or 8.5" for your mid-length, or step up to the 9" or 9.5" for your longboard or everyday log. Across every size, the Christenson maintains the same 33.3° sweep and 50/50 foil, with progressively greater base, depth and area as you move up through the range.

For surfers looking for FCS longboard fins in New Zealand, it's a particularly strong option because one model can cover the increasingly popular crossover between mid-length surfboards and traditional longboards.