RK3 Apeks Fins

Apeks RK3 Fins

Designed in collaboration with the U.S. military and trusted by professional divers worldwide, the Apeks RK3 Fin is built for durability, power, and reliability in the harshest environments. Inspired by one of the first vented rubber fins used in North America, the RK3 delivers proven performance with modern refinements.

Featuring a compact, short-blade design, the RK3 provides powerful thrust with excellent maneuverability, while the vented blade reduces resistance on the upstroke and increases efficiency on the downstroke. An oversized foot pocket accommodates everything from wetsuit boots to bulky drysuit boots, making the RK3 ideal for a wide range of diving conditions.

Standard spring straps and an ergonomic buckle system allow for easy donning and doffing—even with thick gloves or cold hands.

Key Benefits

• Military-tested design trusted by professional and public safety divers

• Compact blade offers strong propulsion with precise control

• Oversized foot pocket fits wetsuit boots or drysuit boots

• Built to withstand extreme environments and heavy use

Technical Features

• Rugged thermoplastic rubber construction

• Short, wide blade for maximum thrust and maneuverability

• Vented blade design reduces drag and eliminates vortexes

• Oversized foot pocket for cold-water and drysuit compatibility

• Spring straps included as standard

• Custom buckle system holds spring strap in optimal position

• Push-pin system allows easy spring replacement

• Two large grommet holes for carabiner attachment and transport