Apeks RK3 Open Heel Dive Fins

Name: Apeks RK3 Open Heel Dive Fins
Brand: Apeks
SKU: 1032462505
Price: 219.00 USD
Availability: OutOfStock
Rating: 5.0 (2 reviews)

$219.00

Boots: Required
Foot pocket: Open heel
Blade shape: Short and wide
Strap: Steel spring

Color: Dark Grey

Size: Small

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Description

Unleash your diving potential with the Apeks RK3 Open Heel Dive Fins, meticulously crafted in partnership with the US military. These fins are built to thrive in the most challenging underwater environments, ensuring outstanding performance and reliability for every adventure.
The oversized foot pocket is ingeniously designed to fit comfortably over drysuit boots, offering a snug and secure fit. Say goodbye to frustrating struggles during gear changes, thanks to the innovative spring strap system that allows for quick donning and doffing.
Experience the thrill of effortless movement with the short wide blade that maximizes forward thrust while providing excellent maneuverability. No matter if you're navigating warm waters or rocky beaches, these versatile fins are your perfect dive companion, engineered to enhance your underwater explorations.

One pair of Apeks RK3 fins with fitted spring straps
User manual

Get support from passionate diving experts dedicated to going the extra mile for you.

Troubleshooting a product issue
Finding the right setup for your dive
Installing components

(805) 967-4456 info@sbaquatics.com

Find your fin size

Size	US shoe	EU shoe
Small	4–6	35–38
Medium	7–8	38–41
Large	9–10.5	42–44
X-Large (Super)	11–14	45–48

Apeks sizes the RK3 to your shoe size worn with a wetsuit boot. Try them on with the boots you dive in; between sizes, go up.

Product Features

Short, wide blade
The compact blade combines forward thrust with maneuverability, keeping the fin easy to control.
Vented propulsion
Blade vents reduce resistance as the fin moves up and help generate thrust on the downstroke.
Rugged construction
Thermoplastic rubber is built for demanding conditions. Two large grommet holes accept most carabiners for carrying the fins to the entry point.
Spring straps
Stainless steel springs and purpose-built buckles help with putting fins on and taking them off, even with thick gloves. A push-pin mechanism allows spring replacement.

Is it right for you?

Who it’s for

Technical divers
Divers wearing boots
Wetsuit divers
Drysuit divers

Best for

Maneuverability
Gloved handling
Booted diving

Fit & design

Blade stiffness: More flexible
Foot pocket: Open heel
Blade material: TPR
Strap: Steel spring
Boots: Required

Find your fin size

Size	US shoe	EU shoe
Small	4–6	35–38
Medium	7–8	38–41
Large	9–10.5	42–44
X-Large (Super)	11–14	45–48

Apeks sizes the RK3 to your shoe size worn with a wetsuit boot. Try them on with the boots you dive in; between sizes, go up.

Boot fit

Try with your actual wetsuit or drysuit boots; shoe size alone does not establish fit.

Wetsuit boots
Drysuit boots

Add-ons

Specifications

Design

Boots: Required
Foot pocket: Open heel
Blade material: Thermoplastic rubber (TPR)
Blade shape: Short and wide
Blade stiffness: More flexible than RK3 HD

Straps and handling

Strap: Steel spring
Strap material: Stainless steel
Spring replacement: Push-pin mechanism
Carry points: Two large grommet holes for most carabiners

Sizing and measurements

Sizes: Small, Medium, Large, X-Large (Super)
Fit reference: Wetsuit boot; verify with your actual boots

Product Details

User Guide

Download User Guide →

Shipping & Returns

Free standard shipping on orders over $50
Free 2-day shipping on orders over $300
Standard Ground delivery in 3–5 business days
Most orders process within 1 business day
Free returns within 60 days — buyer covers return shipping unless it's our error
Free return shipping on exchanges

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Questions? Email info@sbaquatics.com or see our full Shipping & Returns Policy.

Frequently Asked Questions?

Do I need dive boots?

Yes. The oversized pocket accommodates wetsuit boots and drysuit boots; check the fit with the boots you will use.

Which size should I choose?

Use the official wetsuit-boot reference table as a starting point, then try your boots in the fins. Boot construction changes the space needed.

How is the RK3 different from the RK3 HD?

The HD uses a denser compound, is stiffer, and is negatively buoyant.

Can the spring straps be replaced?

Yes. Apeks describes a push-pin mechanism for replacing the springs. Use compatible replacement parts.

What do the grommet holes do?

They accommodate most carabiners so you can clip the fins for carrying or storage during dive-site access.

How should I care for the fins?

Rinse with fresh water after use and air-dry in the shade. Store cool and dry without twisting. The manual says to avoid detergents, solvents, oils, and prolonged heat.

Reviews

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