STOCK UPDATE: We have new shipments of Apeks RK3 HD fins arriving weekly! If you do not see your preferred size currently in stock, please contact us directly so we can check incoming inventory for you.
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Take technical power and drysuit trim control to the next level with the Apeks RK3 HD Dive Fin. Utilizing the exact same proven military-grade shape as the standard RK3, the HD (Heavy-Duty) version is moulded from a higher-density material that makes the fin stiffer and negatively buoyant—ideal for divers seeking extra thrust in heavy currents and precise trim control in drysuits.
Stiffer High-Density Compound & Negative Buoyancy
The RK3 HD is engineered specifically for tech divers, commercial users, and drysuit divers who require a heavier, stiffer fin to keep floaty feet down in the water column. Its high-density compound provides extra power during frog kicks, back kicks, and heavy current propulsion.
Features and Benefits
- Higher Density Material: Stiffer and heavier than the standard RK3, making it negatively buoyant for superior foot trim in drysuits and thick undergarments.
- Powerful Vented Blade Design: Hydrodynamic vents reduce drag on the upstroke and maximize thrust on the downstroke while maintaining incredible manoeuvrability.
- Oversized Foot Pocket: Accommodates large drysuit boots, rock boots, and heavy cold-water neoprene footwear effortlessly.
- Stainless Steel Spring Straps: Heavy-duty stainless steel spring straps with custom buckles come standard for easy donning and doffing with thick cold-water gloves.
- Karabiner Transport Grommets: Oversized grommet holes at the tip and heel allow you to easily clip fins to your harness or gear bag via standard karabiners.
Technical Specifications
| Brand | Apeks |
|---|---|
| Model Name | RK3 HD (Heavy-Duty) Vented Fin |
| Compound / Stiffness | High-Density Stiff Thermoplastic Rubber |
| Buoyancy Characteristic | Negatively Buoyant (Sinks) |
| Strap System | Stainless Steel Spring Straps with Custom Buckles & Push Pins |
| Foot Pocket Fit | Oversized (Fits Drysuit Boots & Rock Boots) |
| Stock Status | Shipments Arriving Weekly (Contact shop if size shows out of stock) |
| Best For | Technical Diving, Drysuit Diving, Heavy Currents, Commercial, & Wreck Diving |
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