F4 Blackstix Tri Fins (Neutral) no image Size up for a looser

Size up for a looser fit

Resettable Combination

everything changed

Smallest being a 7'0 x 20 1/2 x 2 5/8 at 40

The bottom has a deep double concave running through to vee off the tail which makes the board get up on top of the water in even slower

F4 Blackstix Tri Fins (Neutral) no image Size up for a looserFutures Blackstix fins feature a V2 inside foil that generates and maintains speed throughout turns. The precision carbon and fiberglass matrix construction paired with specialized epoxy resin provides a very lightweight fin with incredible response, making your board feel livelier. Template Category Neutral (balanced fluid) Construction Blackstix Ride Number Speed Generating 8. 5 Size Small (48 70kgs)