CUSTOM FINS

A few of our designs are available only as custom-made fins. Not all of which are shown here yet.

While we have a large range of fins, some are only currently available as custom-made fins. A few choices are shown here, but others will be added as needed. These days, we quickly turn our custom designs into production fins once they are proven. This means there will be fewer choices here over time.

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.

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 K9-450K version is also available as one of our CNC production fins.

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.

DIMENSIONS

K9-400K
height: 4.00" [101mm] base: 3.49" [89mm] area: xx.xx in2 [xx.xx cm2]

K9-450K
height: 4.50" [114mm] base: 3.93" [100mm] area: 15.59 in2 [101 cm2]

K9-500K
height: 5.00" [127mm] base: 4.37" [111mm] area: 19.60 in2 [126 cm2]

MSRP: US$100.00

Set of two fins

Price includes fin bag and key

SKU: CSTM-K9-TWIN
PURCHASE

CUSTOM Price List

Show
TWIN Set
$100.00
THRUSTER Set
$150.00
QUAD Set
$200.00
5FIN Set
$250.00
CENTER Fin
$50.00
FUTURES Base Extra per fin
$10.00
FLIPTWO Tips Extra per fin
$10.00

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$10.00 per fin.

Custom fin manufacturing is a minimum of 4 - 8 weeks

WARNING - DUAL TAB Fin Bases

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!

NOTE - REPLACEMENT Fins

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!

HANALEI FINS

Advanced fin designs to take your surfing to the next level.

Fins
General
Info

OFFICES

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

Privacy and Cookie Policies
© 2014 - 2025 Mair Designs LLC All Rights Reserved