Which SUP fin base option do I need for my board?

STEP #5:
FINS BASES EXPLAINED

HOW TO KNOW WHICH FIN BASE OPTION YOU NEED

When investing in a fin upgrade, you need to make sure you have the correct fit for your board. Unfortunately, board companies have so far not agreed on the preferred standard for fin boxes.

What makes it more confusing is that to the untrained eye, both fin box systems look almost identical. Luckily we have this area covered and the details below will ensure that you get the correct fin for your board.

US STANDARD BASE

Fits Starboard, JP-Australia, Fanatic, Mistral, RRD and most production brands with an origin in windsurfing. This is the same fin box that’s found on many windsurfing boards and is wider and deeper, with the pin set further from the deck of the board. The base is 9.2mm thick.

US SURF BASE / LONGBOARD BASE / BAHNE BOX / FINS UNLIMITED

This is the same box that is standard in many surf longboards. It is a narrower and shallower base as used by SIC, Infinity, 404, Flying Fish and many more. Narrower and shallower than the US base, these boxes have the pin set closer to the deck of the board. The base is 9.0mm thick.

COMPARISON BETWEEN BAHNE & US BASE

IMPORTANT: If you are unsure which base you need, look at the base of your old fin and contact us for assistance.

FINS FOR FLAT-WATER TOURING & RACING

These fins are designed for flat-water touring and racing, ranging from cruising your local lake to hammering out a 200-meter sprint. Finding the right combination of tracking, stability, speed and maneuverability will optimize your performance on the water.

FINS FOR DOWNWIND & OCEAN RACING

In conditions where the fastest line depends on wind, waves and current, these fins enhance the surfing characteristics of your race board so you can maintain better flow and speed while successfully catching and riding swells.

5-STEP GUIDE TO CHOOSING THE RIGHT SUP RACE / TOURING FIN