Delray Beach, FL – October 19, 2026 – Apeks is bringing its latest evolution in technical diving performance to DEMA 2026 with the introduction of the new RK4 Fin, a modern technical fin designed for precision, control, and efficient movement underwater.
Built for divers who demand exceptional maneuverability, the RK4 is engineered to support small, accurate movements in confined spaces while minimizing disturbance to sand and silt. Its design makes it particularly well suited for frog kicking and other technical finning techniques where control and efficiency matter most.
The RK4 also delivers optimized performance on both the upstroke and downstroke, helping divers move through the water with greater efficiency and reduced effort.
Designed with both wetsuit and drysuit divers in mind, the RK4 features two adjustment points and stainless-steel spring straps, allowing divers to quickly adapt the fit between exposure protection configurations. Integrated stainless-steel buckles help reduce snag hazards while providing durability and reliability in demanding environments.
A one-piece rubber construction adds toughness and longevity while also making the fin easier to recycle at the end of its usable life.
Additional features include a design that is easy to put on and remove—even while wearing gloves—and a streamlined profile built for technical diving applications.
The RK4 will be available in Black, White, and Orange and is coming soon to North America.
DEMA attendees will be among the first in North America to get a closer look at the new RK4 during the 2026 DEMA Show in New Orleans.
Visit Apeks at HEAD Watersports Booth #1629 to see the RK4 firsthand and learn more about what’s coming next from Apeks.