A4C Series
The A4C series has undergone extensive testing before being put into production. This testing process resulted in many refinements and improvements to the series, easily making them the most versatile fins in our CNC and HRD-KORE range.
This series also has the widest range of sizes. These sizes cover a wide spectrum of fin combos, from twinzers to thrusters. We'll provide more details on the different possible combinations below.
The design of the A4C is a combination of our original A3 and XPD2 designs. The idea was to combine the best characteristics of the two into a fresh design that would eventually replace these older designs. We added several different sizes to make this series as versatile as possible.
A4C Series Details
The shape of this series features a strong cutaway at the base and a reverse curve in the upper portion of the tip, adding more tip area. The trailing edge of the fin is shaped like an "S" in profile to better control the water flow off the trailing edge of the fin. This aspect is very similar to the XPD2; all these features have been enhanced. When coupled with the PHAT FOILS, it further enhances the water flow on and off the fin.
The consensus is that these fins are total winners for the general consumer as they are easy to get your head around and don’t have a lot of visually unusual shapes. Of course, once you start looking closer, there is much more going on than your typical dolphin fin, but the more conventional shape makes them much more approachable for the average surfer. This is a good thing in our minds as it will attract more people to try something different, and once they do, they will be blown away.
The versatility of this series has also been enhanced by the addition of the A4C-500CK KAHI center fin, and these center fins are a game-changer in a thruster setup as they allow a thruster to feel and behave a lot more like a quad. They allow speed to be maintained through turns and add looseness without losing holding power!
All of this new series's fins feature our PHAT FOILS and HOLOFOILS and are available with GEARBOX, DUAL TAB, and FUTURES bases.
A4C-400 TWIN CNC
This new template is now the smallest fin in this series. Intended for use as the back fin in a QUAD, the front fin in a TWINZER, or as an ideal side bite for a 2PLUS1 setup.
DIMENSIONS
height: 4.00" [102mm]
base: 2.875" [73mm]
area: 9.61 in² [62 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-A4C-400-TWIN
A4C-425 TWIN CNC
Currently, the smallest fin in this series. Intended for use as the back fin in a QUAD setup or the front fin in a TWINZER setup. It is also an ideal side bite for a 2PLUS1 setup.
DIMENSIONS
height: 4.25" [127mm] base: 2.875" [73mm] area: 10.91 in² [70 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-A4C-425-TWIN
A4C-450 TWIN CNC
This size is intended to be used as a small side fin in a thruster setup, combined with the A4C-500CK center fin—ideal for a grom thruster setup or where smaller side fins are preferred.
DIMENSIONS
height: 4.50" [127mm]
base: 2.875" [73mm]
area: 12 in² [77 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-A4C-450-TWIN
A4C-500 TWIN CNC
This is the main side fin, used as QUAD front fins, THRUSTER side fins combined with the A4C-500CK center fin. They can also be used as a smaller twin fin.
DIMENSIONS
height: 5.00" [127mm]
base: 2.875" [73mm]
area: 14.74 in² [95 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-A4C-500-TWIN
A4C-550 TWIN CNC
The largest fin in this series is intended to be used as a TWIN fin or as the larger fin in a TWINZER setup. It would be coupled with the A4C-425 as the front fin in a twinzer setup. Lots of power in this fin!
DIMENSIONS
height: 5.50" [127mm]
base: 2.875" [73mm]
area: 15.65 in² [101 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-A4C-550-TWIN
A4C-500CK Center CNC
Center fin for this series featuring our KAHI cutaway design. A high-performance center fin adds another dimension to a thruster setup. The KAHI enhances the turning ability while reducing drag.
DIMENSIONS
height: 5.00" [127mm]
base: 2.875" [73mm]
area: 13.93 in² [89.37 cm²]
MSRP: US$40.00
Price does not include a fin bag
Single fin
SKU: CNC-A4C-500CK-CTR
COMBOS
A4C Fin Combinations
Given the various sizes of the fins in this series, the following combinations are possible.
Additional combinations can be created by mixing them with other fins, some of which are also shown here.
Q2/QFT Series
The latest generation of the Q family of fin designs. While these fins have been around for a long time, they are still very popular because they work! The new QFT versions join them with our FLIPTWO flipped tips.
Smooth, powerful, high-performance fins.
These fins are by far the best-selling fins in our range! They offer smooth power with lots of drive and holding power. The harder they are pushed, the better they work. Have to be tried to feel how good they are in the water.
Due to the rake of the larger fin, they tend to have really good projection out of turns, making them good in larger surf!
The QFT versions raise the performance bar by adding our next-generation FLIPTWO flipped tips.
NOTE: these first versions of the QFT quad set use a different back fin than the original Q2 quad setup. This is the same rear fin as used in the Q5 quad. It is slightly narrower than the original QB2-425. Eventually, we will also carry the QB2 equivalent with the FLIPTWO tips.
Q2/QFT Series Details
QB2-425 TWIN CNC
They are specifically designed as the back fin for a Q2 QUAD set. It features a more upright outline for added drive and tight turns. It can also be used as the front fin in a reverse QUAD setup or as a side bite in a 2PLUS1 design.
DIMENSIONS
height: 4.25" [108mm]
base: 2.875" [73mm]
area: 10.62 in² [69 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-QB2-425-TWIN
QFT-425 TWIN CNC
Specifically designed as the back fin for a QFT QUAD set. It features a more upright outline for added drive and tight turns. It can also be used as the front fin in a reverse QUAD setup or as a side bite in a 2PLUS1. Features FLIPTWO tips - different outline than the original QB2.
DIMENSIONS
height: 4.25" [108mm]
base: 2.875" [73mm]
area: 10.55 in² [68 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-QFT-425-TWIN
Q2-500 TWIN CNC
The main fin in this series serves as the front fin for a QUAD setup and the back fin in a reverse QUAD setup. It can also be used as a side fin in a thruster setup, with the 4Q-500CK center fin for an awesome thruster.
DIMENSIONS
height: 5.00" [127mm]
base: 3.25" [83mm]
area: 15.78 in² [102 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-Q2-500-TWIN
QFT-500 TWIN CNC
The main fin in this series serves as the front fin for a QUAD setup and the back fin in a reverse QUAD setup. It can also be used as a side fin in a thruster setup, with the 4Q-500CK center fin for an awesome thruster. Features FLIPTWO tips.
DIMENSIONS
height: 5.00" [127mm]
base: 3.25" [83mm]
area: 15.78 in² [102 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-QFT-500-TWIN
4Q-500CK Center CNC
Center fin for this series featuring our KAHI cutaway design. A high-performance center fin adds another dimension to a thruster setup. The KAHI enhances the turning ability while reducing drag.
DIMENSIONS
height: 5.00" [127mm]
base: 2.875" [73mm]
area: 12.32 in² [80 cm²]
MSRP: US$40.00
Price does not include a fin bag
Single fin
SKU: CNC-4Q-500CK-CTR
COMBOS
Q2/QFT Fin Combinations
Given the various sizes of the fins in this series, the following combinations are possible.
Additional combinations can be created by mixing them with other fins, some of which are also shown here.
Q5 Series
The latest generation of the Q family of fin designs - Q5!
We have worked on this design for over a year and will complete the final testing this winter. They represent the next advancement in the Q series of fins, with functional and versatile designs.
The Q5 still carries forward the elliptical outline of previous series versions but features a more upright stance and refined blade tip. In addition, the shape of the cutaway has been refined to be more effective and to enhance its functionality on FUTURES bases. The cutaway keeps the base narrow for tight turns and maneuverability.
The other significant advancement with the larger versions of this template is the addition of the FLIPTWO flipped tips. This brings another level of performance to an already excellent fin. In addition, it enhances turns and adds a little extra feel late in the turn.
As with previous versions, it still carries a HOLOFOIL on the inside face, but it is a little more extreme in this design, improving speed and overall performance. The addition of the FLIPTWO tips has allowed these foils to be further enhanced for more speed.
This series is all about smooth power and versatility!
A wide range of templates make up this series, but initially, we only offer a few sizes. More sizes will be added as we grow the series.
Q5 Series Details
Q5-375 TWIN CNC
This template is the smallest fin in this series. Intended for use as the front fin in a TWINZER or as a small trailer in a TWIN setup.
DIMENSIONS
height: 3.75" [95mm]
base: 2.875" [73mm]
area: 7.94 in² [51 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-Q5-375-TWIN
Q5-425 TWIN CNC
Specifically designed as the back fin for a Q5 QUAD set. It can also be used as the front fin in a reverse QUAD setup or as a side bite in a 2PLUS1 setup.
DIMENSIONS
height: 4.25" [108mm]
base: 2.875" [73mm]
area: 10.55 in2 [68 cm2]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-Q5-425-TWIN
Q5-425FT TWIN CNC
Specifically designed as the back fin for a Q5 QUAD set. Also used as the front fin in a reverse QUAD or side bite in a 2PLUS1. Features the FLIPTWO tips.
DIMENSIONS
height: 4.25" [108mm]
base: 2.875" [73mm]
area: 10.55 in2 [68 cm2]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-Q5-425FT-TWIN
Q5-500FT TWIN CNC
The Q5 design is more upright than the Q2 series, with a distinctive cutaway. It still features an elliptical outline that provides smooth power. These fins feature slightly less area than the current Q2 fins, but due to the improved PHAT FOILS and HOLOFOILS, they still have plenty of drive and much more speed.
The other big difference is the addition of the FLIPTWO flipped-tip that enhances speed and maneuverability.
DIMENSIONS
height: 5.00" [127mm]
base: 2.875" [73mm]
area: 14.23 in2 [92 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-Q5-500FT-TWIN
Q5-550FT TWIN CNC
The second largest fin in this series is intended to be used as a TWIN fin or as the larger fin in a TWINZER setup. It would be coupled with the Q5-375 as the front fin in a twinzer setup. Lots of power in this fin!
DIMENSIONS
height: 5.50" [140mm]
base: 2.875" [73mm]
area: 15.62 in² [101 cm²]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-Q5-550FT-TWIN
COMBOS
Q5 Fin Combinations
Given the various sizes of the fins in this series, the following combinations are possible.
Additional combinations can be created by mixing them with other fins, some of which are also shown here.
K9/PWR Series
The K9/PWR series is a new design series. These are only available as a quad set as the fins are matched.
It starts with the K9-450K, our KAHI cutaway keel fin. This fin provides a great combination of drive, maneuverability, and speed. The most prominent feature is the extreme cutaway. We call this cutaway style a KAHI. The cutaway keeps the base of the fin very narrow, allowing the board to turn quickly. While the rake and blade still provide plenty of power and projection. This fin serves as the engine for the combo.
It is paired up with the PWR-400 as the back fin. This fin serves a very distinct role. Due to the shape of the fin, the primary purpose is to add extra drive and speed later in a turn. This fin is commonly set up with a slight overlap inside the front fin. The shape of the fin concentrates the area down low, where it can add extra tracking and drive to a turn. Thereby complementing the front fin.
Both of these fins feature HOLOFOILS that improve their efficiency.
These fins are ideally suited to fish-style boards where a twin keel setup is typically used. They have also proven to be excellent for kneeboard fish-tyle boards.
K9/PWR Series Details
K9/PWR QUAD CNC
This new template is now the smallest fin in this series. Intended for use as the back fin in a QUAD, the front fin in a TWINZER, or as an ideal side bite for a 2PLUS1 setup.
DIMENSIONS
height: 4.00" [102mm]
base: 2.875" [73mm]
area: 9.61 in² [62 cm²]Specifically designed as a quad setup with matched fins. These are intended to be used on boards with an overlapping quad layout for the best performance.
These work well in fish-style boards, especially in kneeboards.
They are only currently offered in these two sizes.
DIMENSIONS
FRONT
height: 4.50" [114mm]
base: 3.9375" [100 mm]
area: 15.49 in² [101 cm²]
BACK
height: 4.00" [102mm]
base: 2.875" [73 mm]
area: 8.00 in² [52 cm²]
MSRP: US$160.00
Price includes fin bag and key
Set of four fins
SKU: CNC-K9-PWR-QUAD
COMBOS
K9/PWR Fin Combinations
Because this is a matched set (SPLIT KEELS) there is only the one quad combo.
WS2 Series
The WS2 series is a second-generation version of our split keel design. They have undergone some minor tweaks in bringing them to our CNC range.
This series comprises only two designs - a front fin WS2-400FT and a back fin WS2-475. The front fin features our new FLIPTWO tip design for better performance and transition speed. In addition, both fins feature extensive hollow foils on the inside faces, again geared towards improved performance.
These fins can be used in many boards but are especially well suited to fish-style boards. When placed correctly, these fins can provide an enhanced twin fin feel but without the twitchiness of the typical twin fin.
The split keel design depends on the fins being placed as close together as possible for the best performance. By this, we mean the fore-n-aft placement. In addition, because the fins are essentially keel fins that have been split into two separate fins, their functionality depends on a tight cluster.
However, this setup can still work well in fin setups that are more spread out; they are just not as optimal as a tight cluster. These two templates can also be used separately, although the design was intended to be used as a quad setup.
We do not currently sell them separately; they are always sold as a quad set.
WS2 Series Details
WS2 QUAD CNC
These are the updated versions of our WS2 split keels.
These new versions have the following tweaks to the design.
The front fin now features our new FLIPTWO flipped-tips, PHAT FOILS, and HOLOFOILS.
The larger back fin has a slightly tweaked trailing edge at the base with a cutaway that enables easier placement on FUTURES bases. It also features the addition of PHAT FOILS and HOLOFOILS.
The shape of the front fin has a lot of rake that gives the setup a lot of speed and improves the projection. This increased rake also helps the fin's role as a transition fin, where it is designed to initiate turns and then, once into the turn, transfer the drive onto the back fin.
The matching back fin for this set is the WS2-475. This is the main driving force of the setup. Features a shape that distributes the area fairly evenly throughout the fin but with more area in the tip than normal fins.
This shape gives the fin a lot of power and plenty of speed when coupled with our HOLOFOILS. The projection from this fin setup is amazing, making it good in a wide range of wave heights.
Works exceptionally well on fish-style boards. But it works best if the fin boxes are arranged in a tight cluster.
DIMENSIONS
BACK
height: 4.00" [102mm]
base: 3.25" [83mm]
area: 11.84 in² [76.39 cm²]
BACK
height: 4.75" [121 mm]
base: 3.50" [89 mm]
area: 15.12 in² [97.55 cm²]
MSRP: US$160.00
Price includes fin bag and key
Set of four fins
SKU: CNC-WS2-QUAD
COMBOS
WS2 Fin Combinations
Because this is a matched set (SPLIT KEELS), there is only one quad combo.
H5 Series
The current generation of the Hammer fin design. This is the 5th generation version of this design, which continues to evolve as one of the best choices for an excellent rear fin in a quad setup.
These fins have effortless turning abilities while providing lots of drive and hold for such a small fin.
They can be combined with most of our large quad front fins to add a whole new dimension to a quad setup. They are also reasonably popular as side bites in 2PLUS1 configurations.
Due to the shape and rake of the upper blade, these fins provide a lot of drive out of a turn as the edge will engage late into the turn. The Hammer design has been part of our range for a very long time and continues to evolve, and this version is the most current production version.
H5 Series Details
H5-400 TWIN CNC
The latest version of our HAMMER fin design is optimized for use as a back fin in a quad setup.
The H5-400 features our unique HOLOFOILS on the inner face. The H5 has slightly more area than the earlier version with a little less rake. The latest generation is now available as a CNC-machined fin!
DIMENSIONS
height: 4.00" [102mm]
base: 2.875" [73mm]
area: 13.94 in2 [89.94 cm2]
MSRP: US$80.00
Price includes fin bag and key
Set of two fins
SKU: CNC-H5-400-TWIN
COMBOS
H5 Fin Combinations
There are no specific combos for the H5 as it is generally used with other fin series as a back fin in a quad setup.
These combos can be seen in the appropriate fin series.
The H5 also makes a great side bite in a 2PLUS1 setup.