Alex Lopez Diamond Twin Fiberglass
Alex Lopez's Diamond Twin, Futures compatible solid fiberglass in clear or brown.
The Fin
Alex Lopez's Diamond Twin, Futures compatible solid fiberglass in clear or brown.
Lopez surfs and shapes in San Diego, and the Diamond Twin is his own twin template — a 5.48" base carrying 5.25" of depth, so the base is slightly wider than the fin is deep.
How that reads
A base wider than the depth is a drive bias: the fin generates speed down the line and holds a long arc, rather than pivoting tightly off the tail. It is a twin for surfing through a turn, not for snapping out of one.
Who it suits
Fish and twin-fin boards, especially in waves with enough face to draw a line on.
Specifications
What people say
Nimble and quick under the feet, with a forward leaning wide point and pulled in tail. It's skatey, lively, and, thanks to the winged diamond tail, turns a little more on pivot than a swallow tail or rounded pin.
Quick acceleration, easy rail to rail, plenty of hold — working across round pins and long fish to performance twinnies.
Lopez shaped the board, then spec'd the fin to go in it — if you're on an Alex Lopez board, there's no compelling reason to second-guess that starting point. Beyond his boards, it's right for any wide-point-forward twin or diamond-tailed fish where you want acceleration with actual redirectability, not a keel lock-in. It sits in the middle by design.
A solid fiberglass twin fin designed by shaper Alex Lopez for his Diamond Twin surfboard model and produced by True Ames in a Futures-compatible base. It measures 5.35" base by 5.25" height, a nearly square aspect ratio with a fuller body and a narrow, raked tip — more base than a typical upright twin, less than a keel. Lopez recommends the fin across his Diamond Twin, Grand Twin, Kinky Fish, and LT board templates, which span roughly a 5'7" performance twin to a 6'8" longer twin; True Ames lists it for round pins, long fish, and performance twins.