Apeks RK4 Dive Fins

The Apeks RK4 is a compact, wide-blade dive fin built for controlled movement in the water. Its technical design suits frog-kicking and back-finning, with the manoeuvrability to make small adjustments in confined spaces and the performance for open-water diving.

Choose White, Black or Orange in Small, Medium or Large. Sold as a pair.

Why choose the RK4?

• Precise fin control: a compact blade helps you make small movements and minimise disturbance to sand and silt.
• Efficient propulsion: designed to work on both the upstroke and downstroke.
• Adjustable boot fit: two adjustment points and stainless-steel spring straps accommodate wetsuit and drysuit setups.
• Streamlined hardware: integrated stainless-steel buckles help reduce snag points.
• Durable construction: a one-piece rubber body, with straps designed for easier handling when wearing gloves.

Choose your size carefully

Available sizes are Small, Medium and Large. Check the fit with the dive boots you plan to wear. If you are unsure, ask Simple Dive for help before ordering.

Limited stock and restock information

Stock is limited in each colour and size. The next restock is expected in approximately eight months; this is an estimate and may change.

Change-of-mind exchanges for a different size are unavailable on this limited-stock release. Please choose your size carefully before purchasing. This policy does not limit your rights under the Australian Consumer Law, including any right to a repair, replacement or refund where consumer guarantees are not met.

Frequently asked questions

Are these fins sold as a pair?

Yes. One order includes a pair of Apeks RK4 fins in your selected colour and size.

Can I use the RK4 with a wetsuit or drysuit?

Yes. The RK4 has adjustable spring-strap settings for wetsuit and drysuit use. Check the fit with your actual boots before choosing a size.

Which colours and sizes can I choose?

White, Black and Orange are offered in Small, Medium and Large. Select your preferred combination above to check its availability.

What if I am unsure about sizing?

Contact Simple Dive before ordering and tell us which boots you will use. Size-change exchanges for a change of mind are unavailable, so it is worth checking the fit first.

When will sold-out sizes be restocked?

Our distributor expects next restock in approximately eight months. Contact us for the latest estimate before planning around a future delivery.