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Apeks TEK RK3

  • Apeks TEK RK3
  • Apeks TEK RK3

Apeks TEK RK3

Product description Apeks TEK RK3

Designed in collaboration with the US military and renowned for outstanding performance and reliability, the Apeks RK3 is a rugged thermoplastic rubber fin featuring an over-sized foot pocket to accommodate drysuit boots and a spring strap for easy donning and doffing. The RK3 is available in three sizes: Medium, Large and Super.


Based on one of the first vented rubber fins sold in North America and popular among military and professional divers.
Compact, and ultra-rugged for use in harsh environments.
Improved foot pocket with spring straps for ease of use with cold hands or thick gloves.
The design has been the standard gear issue fin for military, special ops, coast guard and public safety divers for decades.
Short wide blade provides maximum forward thrust while maintaining great manoeuvrability.
Vented blade design reduces resistance on the upstroke and enhances thrust on the downstroke.
The vents also eliminate vortexes that can occur along the back of the blade much in the same way split fins eliminate the vortex.
The blade material designed to hold up in the toughest environments, temperatures and abuse.
Two large grommet holes designed to fit most karabiners for easy storage of the fins while accessing the dive site.
Spring straps as standard.
Custom designed buckle holds spring straps in optimum position.
Simple push pin design allows simple replacement of springs if necessary.

Medium: 982gm per fin
Large: 1.19kg per fin
Super: 1.27kg per fin


Large x Width:

- Size M: 48,2 cm x 22.5 cm.
- Size L: 54,4 cm x 23.5 cm.
- Size XL: 57 cm x 23.5 cm.

- Size M: 22,5 cm.
- Size L: 26 cm.
- Size XL: 27,5 cm.

Width footpocket:
- Size M: 9 cm.
- Size L: 9,7 cm.
- Size XL: 10 cm.

Do not wait any longer and buy Apeks TEK RK3 with the best sending conditions and at the best price. In addition, at scubastore you can find other Open heel fins products in the Fins, masks and snorkels category that can complement your order. Buy Apeks TEK RK3 and receive it as soon as possible. Have a look on our Fins, masks and snorkels deals and choose our best offers.

Features Apeks TEK RK3

Recommended use

Customer reviews and questions (10)

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(existing customers only)

Apeks TEK RK3


Powerful fin! Use not too much effort as expected.

Opinion on the rk3


I have acquired these fins that have fulfilled my expectations, very easy to put on and take off but once put on perfectly adjusted. Specific for technical diving, very happy with my purchase.



Thank you! Excellent product, good delivery and on time. It fulfilled my expectations

The definitive fins


After thirty years of activity, on the advice of a friend who is responsible for Apex sales, I tried them, perfect, comfortable, logically recommended for the frog, they already have the springs supplied .... what else to say .... Stra recommended !



I have been an instructor for more than 18 years and have tried countless fins. They are somewhat heavy, but they are compensated with their flapping facility, either frog or traditional style, they give a good thrust and maneuver control. Not recommended for people with little experience, but highly recommended for technical or high level divers.

Tested and approved !


Meets my expectations!

Weight of rk3


Hello! I would like to know how much the two RK3 fins weigh please. Thank you very much!

our experts answer

Hello! in M size, 1.9 kg. Thanks for your question!

Foot Pocket size dimensions


Could you please provide the foot pocket dimensions of the Large and Super sizes? Width, Height, Length (from toe to heel)

our experts answer

Hello! on the Large size, it is total length 54.4 cm/ total width: 23.5 cm/ footpocket depth 26 cm/ width 9.7 cm/ height 7 cm. Thanks for your question!

I need information


Hi: Are the fins to be worn with sole pads? How long would the length 46-48 be? Thank you very much in advance

our experts answer

Hello! yes, they are fins designed to go with boots with sole. They are a really heavy model. Length 50 cm aprox. Thanks!

Duda sizing


Hello good wanted to know who exactly belongs to size M size and whether it would be suitable for a size 40 which is what I have. Greetings and thank you.

our experts answer

Good morning, we confirm that the size 40 would size M. Greetings

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