K4 Fins Bubble Fin Box Type:US The quad C beam mast

The quad C beam mast core delivers ‘dynamic reactive flex’ that equates to better strength

during the toughest moves

Hardware made from titanium and 316L stainless steel

but also by it’s sheer difference in weight

Formula boards

K4 Fins Bubble Fin Box Type:US The quad C beam mastOur Freestyle fin developed with Andy Bubble Chambers. We originally had two different prototypes; one worked great on flat water but would let go in the chop, the other was rock solid in the chop but too grippy on flat water. The BUBBLE freestyle fin has the perfect blend of grip to be secure in the chop and into carving manoeuvres, whilst still allowing plenty of release for double spins. A fin you can take anywhere which wont let you down. Grip in