The RK3 HD fin is the latest in the RK3 range. It is made from a higher density material than the standard RK3, which makes the fin stiffer and heavier and is therefore the ideal fin for dry suit diving. The new, heavier compound makes it negatively buoyant and produces a stiffer blade, providing additional power in heavy currents or surf. Designed in collaboration with the US military and renowned for outstanding performance and reliability, the APEKS RK3 HD is a rugged thermoplastic rubber fin featuring an oversized foot pocket to accommodate drysuit boots and a spring strap for easy donning and doffing.

Designed in Collaboration w/US Military

Higher Density Material than Standard RK3

Stiffer and Heavier: Ideal Fin for Dry Suit Diving

Heavier Compound Makes it Negatively Buoyant

Produces Stiffer Blade, Providing Additional Power in Heavy Currents or Surf

Renowned for Outstanding Performance and Reliability

Rugged Thermoplastic Rubber (TPR) Fin

Over-Sized Foot Pocket to Accommodate Dry Suit Boots

Spring Strap for Easy Donning and Doffing

Based On One of The First Vented Rubber Fins Sold in North America

Popular Among Military and Professional Divers

Compact, and Ultra-Rugged for Use in Harsh Environments

Improved Foot Pocket w/Spring Straps for Ease of Use

Easy Donning/Doffing Even w/Cold Hands or Thick Gloves

Standard Gear Issue Fin for Military, Special Ops, Coast Guard, and Public Safety Divers

Blade Design: 

Short Wide Blade Provides Maximum Forward Thrust

Maintains Great Maneuverability

Vents Reduce Resistance on Upstroke/Enhance Thrust on Downstroke

Vents Eliminate Vortexes that Occurs Along Back of Blade

Blade Material: Holds-Up in Toughest Environments, Temperatures, and Abuse

2-Large Grommet Holes: Fit Most Carabiners, Easy Storage of Fins while Accessing Dive Site

Spring Straps: Custom Designed Buckle Holds Spring Straps in Optimum Position

Straps Equipped w/Rubber Heel Extrusion for Comfort

Simple Push Pin Design Allows Simple Replacement of Springs if Necessary

Size Chart:

Size Men Women EU Size

Small 5-7 6-8 36-38

Medium 7-9 8-10 39-41

Large 9-11 10-12 42-44

XL/Super 12+ 13+ 45-48