iRocker SUP Fins

SUP fin compatibility guide

Which Fin Fits My iRocker SUP?

iRocker is one of the most popular SUP brands in the US, and most of its range — Nautical, All-Around, Cruiser and Sport — uses iRocker's own flip-pin quick-lock fin box, a tool-free system that's specific to the brand. The Blackfin line, iRocker's sister brand, is the exception: it uses a standard US Box fin instead. We stock replacement fins for the quick-lock system as well as US Box, so there's a good chance we can match your board either way. Select your exact model below to see which system yours uses and what fits it.
Model Fin box Fit
Loading compatibility data…

Can't find your exact model? Try the full SUP Fin Finder →

Frequently asked questions

What fin system does iRocker use?
Most of the standard iRocker range — Nautical, All-Around, Cruiser and Sport — uses iRocker's own flip-pin quick-lock fin box, a tool-free system specific to the brand.
Does Blackfin use the same fin as iRocker?
No. Blackfin, iRocker's sister brand, uses a standard US Box fin rather than iRocker's flip-pin quick-lock system — they're not interchangeable.
Can I use a US Box fin on my iRocker Cruiser?
No. The Cruiser uses iRocker's proprietary flip-pin quick-lock box, not a US Box. You'll need a fin made for that specific system.

Find the right fin

Pick your board's brand and model — we'll check the fin box and show what fits.

Not sure which model you have? See how to identify your fin box →

How the fin finder works

01

Select your board brand

Choose from Red Paddle, Decathlon, Fanatic, Starboard and more.

02

Choose your exact model

We use your model — and model year where necessary — to determine the fin system.

03

Get your compatibility result

We'll show a compatible Eisbach Riders fin when we have one. If we don't, we'll tell you which system to look for instead.

Can't find your SUP?

Our compatibility database is constantly expanding. If your exact board isn't listed, identify your fin box manually or tell us the brand and model.

Identify my fin box →

Tell us which board is missing

How we verify compatibility

Our database maps SUP brands and models to their fin-box systems using manufacturer specifications, product information and compatibility checks where available. Where we cannot confidently verify a fit, the Fin Finder tells you to check rather than recommending a product as an exact match.

Compatibility database last reviewed: August 2026 · 180 board models mapped