4.5″ Pin Box Findestructable SlidSafety Flex Fin

Riverbound Flexible Slide-In River Fin – Built for Shallow Waters and Rugged Use

Tackle rocky, shallow rivers with confidence using our Slide-In Pin Style Flexible River Fin—designed specifically for inflatable paddleboards. Its ultra-flexible construction helps reduce impact damage while maintaining stability and tracking in low water conditions.

With a raked profile to helps glide over rocks and minimize hang-ups, and hitting unexpected obstacles. It installs quickly into standard slide-in fin boxes, making it an easy replacement for river and creek adventures.

Whether you’re maneuvering technical rapids or exploring low-flow streams, this flexible river fin offers rugged reliability without compromising performance.

 River Fin Features

• Standard longboard finbox compatible
• Highly flexible for river running

Fin Dimensions:

7.3″ long at finbox by 4.5″ tall