FCS II AM PC Aircore Al Merrick Grey Tri Fin Set

Constructed out of a new a lightweight AirCore material, the raked side fins produce exceptional drive & a smaller center fin offers quick release through turns.  This fin template was designed by Channel Islands Surfboards founder/shaper Al Merrick, a template developed & refined over his decades of shaping for the worlds best surfers.

This fin’s wide base and raked back shape gives you heaps of drive down the line and hold on rail .  The narrower tip and smaller back fin gives you plenty of release off of the top.  The  PC honeycomb construction creates a positive feeling medium flex pattern, suitable for use in a large range of conditions.  One of the most popular thruster sets we sell in store.


Base: 4.55" / 116mm
Depth: 4.52" / 115mm
Area: 14.89"² / 9608mm²
Sweep: 36.6º
Foil: Flat

Base: 4.34" / 110mm
Depth: 4.41" / 112mm
Area: 13.72"² / 8852mm²
Sweep: 35.0º


Base: 4.61" / 117mm 
Depth: 4.70" / 119mm 
Area: 15.63"² / 10083mm² 
Sweep: 36.3º 
Foil: Flat

Base: 4.47" / 113mm 
Depth: 4.45" / 113mm 
Area: 14.68"² / 9469mm² 
Sweep: 38.6º

FCS II Aircore - significantly lighter, greater response and finer tuned flex.

Lighter, greater response and finer tuned flex.  Aircore is a relatively new construction method that FCS have started implementing to a greater extent across their fin range. Built using a resin transfer moulding process which infuses a pressed polyurethane foam core & layers of fibreglass with epoxy resin. This construction method uses less fibreglass and resin while creating a lighter, ultra-responsive fin with a finely tuned flex pattern.  The AirCore construction method gives greater scope for customising the flex of each fin model (compared to traditional fin constructions) allowing for the precise tuning of flex to suit each fin model, fin size and rider preference.

AirCore fins are also significantly lighter than any other fins in the FCS range. AirCore fins also flex faster than traditional fin constructions. So, when you load them up (flex them by push against your fins through a turn), they snap back to their original, unflexed state quicker.  This means quicker, less delayed reaction times and a more lively, positive feeling under-foot.