Upgrade your paddle board with a flexible river SUP fin for US-Box systems, designed for shallow water paddling, river touring, and long-distance paddle boarding. This US-Box paddle board fin delivers excellent tracking, stability, and control while remaining flexible enough to handle rocks and shallow riverbeds.
The flexible construction helps absorb impacts, making it the ideal paddle board replacement fin for paddlers exploring rivers, alpine waterways, and low-depth environments.
This durable SUP center fin combines sustainability with reliable performance — whether you’re paddling calm lakes, flowing rivers, or coastal waters.
Compatible Paddle Boards
This US-Box SUP fin fits most paddle boards with the standard US fin box system, the most common center fin setup used on inflatable and hard paddle boards.
Compatible with many boards from brands such as:
- Red Paddle Co
- Fanatic
- JP Australia
- most boards from Starboard
If your board uses a US-Box center fin with screw and plate, this fin works as a reliable SUP fin replacement.
Perfect For
- River paddling and shallow water SUP
- Paddle board touring and long-distance paddling
- Replacing lost or damaged US-Box SUP fins
- Inflatable and hard boards using a US fin box system


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