Features

Name The FCS II AM Performance Core Thruster Large
Size Large (approximate rider weight 75-90 Kg)
Construction Performance Core UltraLight AirCore
Base 117mm
Depth 119mm
Area 10083mm²
Sweep 36.3°
Colour Yellow

Description

The FCS II AM PC Large Thruster Set in the new Ultralight AirCore construction.

Al Merrick's thruster offers exceptional drive off the bottom and the smaller centre fin offers a much quicker release. This is a great all-round fin which works in most conditions and excels in steeper waves.

Construction: Performance Core AirCore - Performance Core replicates the feeling of traditional glassed-on or fibreglass fins but with a huge reduction in weight thanks to this Ultralight AirCore construction. The Resin Transfer Moulding process produces a lightweight and flexible fin for a smooth feel and impressive aesthetic.

PLEASE NOTE: These FCS II fins are NOT compatible with the original FCS and FCS Fusion fin plugs.

Delivery & returns

For delivery between Thu 23 Jul 2026 and Mon 27 Jul 2026

Royal Mail 3 - 5 Working Days

£3.99

What if I need to send something back for exchange or refund?

It's not a problem, all purchases on Boardshop.co.uk are covered by a 14 day exchange or refund guarantee. If you are not completely satisfied with your purchase it can be exchanged or the cost of the item(s) refunded. In case of all returns you will need to contact us for a returns number.

Please click here for further information.

Prices shown are for mainland UK delivery. For full worldwide delivery info please click here.

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Why buy from Boardshop

We are a dedicated team of surfers delivering the best products and services for everyone who surfs, from the absolute beginner to the seasoned traveller and everyone in between. #ridewithus

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FCS II AM PC Aircore Tri Fins Large - Yellow

1 reviews

Al Merrick's thruster offers exceptional drive off the bottom.

In stock and ready for delivery

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Why buy from Boardshop

We are a dedicated team of surfers delivering the best products and services for everyone who surfs, from the absolute beginner to the seasoned traveller and everyone in between. #ridewithus

Interest Free credit

International delivery

Fast guaranteed delivery

Overview

Key features and details

No Fin Key, No Fuss

FCS II Fins are designed for speed, in and out of the water. Thanks to their patented tool-less system, you can swap fins with a simple click, no fin key or screws required. This system saves time and effort without sacrificing hold or performance.

Will these fit my Surfboard?

Made for FCS II fin boxes - the ones with two slots and no need for screws. They’ll still work with optional grub screws if your board has them, but they’re not essential. If your board has FCS I (older screw-in) boxes, these won’t fit.