FINSCIENCES MODERN SURFBOARD FIN AND SUP FIN DESIGNS
Superior Performance = More Fun!
READY FOR A NEW EXPERIENCE? TRY OUR FINS.
You know how sometimes your board seems sluggish, hard to paddle, and slow to turn—it’s not performing like it used to? FinSciences modern surfboard fin and SUP fin designs amp up the energy in your board by reducing drag and increasing lift (hold and tracking) so you can have more fun on the water—and for a lot less money than a new board! We design our fins based on solid science, not tradition and folklore.
FinSciences 4.8″ fin
Specs:
Total area: 10.14 in²
Template/planform area: 9.75 in²
Finlets area alone: 0.9 in²
Height/depth: 4.8 in
Rake/sweepback: 22°
Foil section: symmetrical (double)
Anti-cavitation trailing edge
Stiffness: semi-flex or stiff
Colors: gloss black, blue, matte black
Fits FCS (and Futures with adapter)
$25.00
FinSciences 5.7″ fin
Specs:
Total area: 14.6 in²
Template/planform area: 13.6 in²
Finlets area: 1.1 in²
Height/depth: 5.7 in
Rake/sweepback: 22°
Foil section: symmetrical (double)
Anti-cavitation trailing edge
Stiffness: semi-flex or stiff
Colors: gloss black, blue, matte black
Fits FCS (and Futures with adapter)
$29.00
FinSciences 9¼” fin
Specs:
Total area: 30.6 in²
Template/planform area: 29.1 in²
Finlets area: 1.5 in²
Height/depth: 9.25 in²
Rake/sweepback: 15°
Anti-cavitation trailing edge
Stiffness: Semi-flex or stiff
Colors: Gloss black, orange, blue, clear, or matte black
Fits Fins Unlimited and Bahne fin boxes
$75.00
EVER MISS A GREAT WAVE YOU SHOULD HAVE CAUGHT?
FINSCIENCES MODERN SURFBOARD FIN AND SUP FIN DESIGNS KEY FEATURES
FinSciences makes modern surfboard fin and SUP fin designs. Our fin designs are based on solid science, not tradition and folklore. So they look different from traditional fins. Read more about surfboard fin science. Here are some of the key features of our fins.

Finlets

Adjustability

Small surface area

Cutaway

Forward-projected base

Low-sweepback/rake angle

High-lift, low-drag foil shape

Symmetric, double-sided foil

Oblique Trailing Edge

High Aspect Ratio

Low taper ratio

Details, details.
NOT ENOUGH SPEED FOR AERIALS? WASTING ENERGY PUMPING YOUR SHORTBOARD FOR SPEED?
FinSciences fins are designed to be fast, yet with plenty of hold and drive so you can get some air and have more fun!
Our whole idea is to do more with less. We use science to design fins with more hold and drive, and less drag than typical fins. Yeah, everybody talks about more hold and drive, but we actually used numbers and science to amp up our fins’ hold and drive. The result: our fins are easy to paddle, accelerate, track well, and turn without stalling for more fun on the water—or in the air!
IS YOUR STANDUP PADDLEBOARD (SUP) TOO SLOW? TOO HARD TO PADDLE?
FinSciences fins take less horsepower to paddle→Less-tired arms, more speed, and more fun!
LOTS OF PEOPLE LOVE THESE FINS
When’s the last time you wrote a company to tell them how much you loved the product? Here’s what some of our customers have had to say—unedited.
Thanks Again,
I LOVE IT!!!
It screams out of turns just as you promised, I just may have to get a few more…. I promised to send photos of my work, so enclosed you should find a few. Thanks again for your fin, it brings yet more fun to my surf!
Aloha,
Just wanted to let you know that the day I received my new Wavegrinder longboard fin I fitted it my board at lunchtime ready for a quick dash down for a surf after work. Beautiful little point breaking waves. Oh boy, what fun. I exhausted myself very early in the session. Hadn’t caught so many waves in such a short amount of time before. The fin seemed to allow me to paddle onto the waves much easier, the board felt more loose than previous and I got to the nose better than before. What a blast of fun.
Thanks.
Just wanted to give you some positive feedback regarding the Wavegrinder fin. I’ve been surfing it for a few weeks now and am completely stoked. First time out, I was most impressed by the projection out of bottom turns and the sensation of feeling the fin flying thru the water. Per the recommendation I had the fin a few inches back than normal for me. The next time out I moved it up about an inch and a half to see the difference. Didn’t work nearly as well. Interesting that the placement makes such a difference. Very seldom does any new product or innovation live up to claims, but the grinder exceeds by 100%. You’ve increased my stoke considerably, which I didn’t think was possible. I wish you much well deserved success. thx
Your longboard fin is amazing!
The fins are AMAZING so much speed out of a turn and paddling couldn’t be easier my brother and I are very impressed. I’ve been out several times this week and I couldn’t be happier, today was a little steep but the fin put me in quicker so I was down the line before the wave could get me.All the short borders hate me, they want to know if you are making a fin for the short board.We are spreading the word so hopefully you will get more orders. Bye the way the turning is so quick we had to put the fin 3/4 of the way towards the back of the fin box, with the fin in the same spot as the turbo tunnel my brother kept throwing himself off his board it was so quick
Thanks for a great invention.
Tom Blake would be proud.
All hard to believe, but I totally noticed the difference immediately.
My stand up paddle board is 11 feet by 30 inches and now spins a 180 with one stroke…
Sincerely,
I Like it!!! Played in some 3-4’ stuff in HB this past weekend and had great fun. Allowed me to get that 10-0 around pretty quickly. Pretty steady at the nose too.
I had it moved about two inches behind where I usually place the other fins.
Good fun…..I look forward to better waves with it.
I gave that Wavegrinder fin a real workout in Baja over the weekend and had a lot of fun with it. We had consistent glassy surf for three days that ranged between 4’ and 10’. As an old traditionalist it was quite different trying something that new and I found it to be everything you said and more. My turns were very smooth and the transitions from a cutback to a bottom turn were fast and I didn’t notice any stalling, obviously I really liked it! HOWEVER, kelp is not a good thing for a vertical fin. For surfing Costa Rica, the Dominican Republic and at home I will certainly be surfing the Wavegrinder.
Regards,
Thank you very much for the extra plates and screws. I’ve surfed the fin 4 times, the first 3 times it was mostly small. I was surprised by how my board 9′ surtec, expoxy, Takayama, snapped off the top, and there was some speed to the bottom turn. Yesterday I got it in head-high Torrey Pines. The board seemed faster down the line, the snaps off the top and bottom were no problem. We talked about how tight it was in the box, and I remember you telling me to have the fin in the back of the box. I’m gonna sand it down and move it back. the board has alota tail rocker and I’m interested to see how it works out. Thanks again. P.
