K9 Series

K9 Series

The latest generation of our family of keel designs - K9! This fin is also used in the K9/PWR combo. It takes our original KCS keel fin and updates it with several improvements.

The overall base length has been shortened to reduce tracking, but the most significant change is the introduction of the KAHI (cutaway). This reasonably extreme cutaway helps loosen up the design while leaving the fin with plenty of drive. In addition, by reducing the base length and adding the KAHI, we reduce drag, making the fin faster.

As with most of our new designs, these fins have PHAT FOILS and HOLOFOILS on the inside faces. The trailing edge of the fin is also cambered to help focus the water flow through the center of the fin.

These fins work very well and are an excellent choice for a twin fin, in larger sizes, and also for fishes, where they can be combined with the PWR fin for an even more powerful setup.

K9 Series Details

K9 Series
K9 Series Custom Fins

Currently, the K9 series is only made in three sizes, all with KAHIs. As shown in the K9/PWR combo, the middle size is used.

The larger version is used for twin fins and fishes, and the smallest version is best suited for a smaller combo with the PWR back fin or possibly as a side fin in a thruster setup. It could also be combined with a different template in a quad setup.


height: 4.00" [101mm]
base: 3.49" [89mm]
area: xx.xx in2 [xx.xx cm2]

height: 4.50" [114mm]
base: 3.93" [100mm]
area: 15.59 in2 [101 cm2]

height: 5.00" [127mm]
base: 4.37" [111mm]
area: 19.60 in2 [126 cm2]

MSRP: US$100.00

Price includes fin bag and key

Set of two fins




K9 Fin Combinations

The primary combo for this fin is shown in the K9/PWR section. Otherwise, these fins are meant to be used by themselves.

Additional combinations could also be created by mixing them with other fins.

Also available from our distributor

NRG2 TRC Series

NRG2 Series

We have added the NRG2 trailer fin to our custom fins as we see a lot of demand for these small trailing center fins. They are awesome in a twin fin as they help smooth things out.

The version featured here is 3.00" in height and, due to the nose at the base, can be made to work with a full DUAL TAB or GEARBOX base. Plus, they also work on a FUTURES Shallow base.

They are great with any of our twin fins, as they will smooth the turns and add extra control.

NRG2 Series Details

NRG2 Custom Fins

This tiny trailer fin is proving very popular as a center fin when coupled with one of our CNC twin fins.

It helps smooth the turns with the twin fin and adds extra control.


height: 3.00" [101mm]
base: 2.875" [73mm]
area: xx.xx in2 [xx.xxcm2]

MSRP: US$50.00

Price does not include a bag and key

Single fin




NRG2 Fin Combinations

The combos shown here are with a number of our CNC twin fins.

Additional combinations could also be created by mixing them with other fins.

Also available from our distributor

CUSTOM Price List

5FIN Set
FUTURES Base Extra per fin
FLIPTWO Tips Extra per fin

All prices subject to change without notice

The pricing shown is for custom fiberglass fins. G10 or hybrid fins are extra. FUTURES base fins add US$15.00 per fin.

Custom fin manufacturing is a minimum of 4 - 8 weeks


HANALEI FINS cannot guarantee against the breakage of dual tab bases. The DUAL TAB system is designed to break under specific loads or hard impacts.

We try to make the tabs as strong as possible, but there is only so much we can do before we run into the limitations of the base design.

If a DUAL TAB base does break, we will work with the customer to replace the fins at a reduced price, but we cannot outright replace the fins at no charge!


HANALEI FINS cannot sell individual side fins should you lose a side fin, as it means we have to break up a set of fins. So we are left with a fin that we have little chance of selling by itself.

If a fin is lost, we will work with the customer by selling a set of replacement fins at a reduced price. These replacement fins would not be in a bag to keep the cost down!


For anyone interested in our fins featuring FLIP TIPS, please be aware that these fins are sensitive to the amount of toe-in used in the box setup, so it is worth checking with us.

We have encountered several cases where fin boxes set up with excessive toe-in have caused issues with fins featuring FLIP TIPS. We want to ensure there are no problems with our fins. Therefore we are offering to verify that they will work in the setup on any given board before buying any of these fins.

Before you order any of these fins, if you are unsure whether they will work on your board, please CONTACT us so we can ensure they will work for you!


Primary office locations for HANALEI FINS - Australia and Hawai'i (USA). Contact info is provided here, but the preferred contact method is through the contact form on this site.

+61 2 4339 9580

+1 808 639 5303