Boardseeker.com review of K-4 Fins: " K4 fins provide very good grip with a really nice balance between drive and looseness off the top. They will make your board livelier, yet more controllable. Theyre perfect for any wavesailor whos focused on waveriding, and the pricing is as impressive as the performance."
K4 fins are a unique innovation in windsurfing. Simply put they are different.
K4 fins are all about phat twins, tri's and quads. The new technology isn't appropriate for the longer single fins. The K4 multi-fin shapes, design, and innovation has come from water time. Coupling this with science and know how has culminated to something ground breaking.
You know how sails 'breathe' and twist off to keep control and deliver speed? K4 Fins do the same to multi-fin wave boards by designing a flex pattern that works with you. K4 Fins have created a unique and new material for windsurfing. OptoFlex is a molded resin long fibre matrix that has been carefully manipulated to provide the perfect flex patterns for windsurfing. K4 technicians took a long time to create the perfect material with the qualities needed to provide the performance we now appreciate. Lighter, snappier and with outstanding flex memory.
When powering around the fins flex from the tip down. When Jumping and general sailing you feel the fins under the foot complimenting your movements. When heading up-wind you feel the fins flex and work with the power your putting through them. When landing they again flex and work with you, rather then against you!
Waveriding is where the fins really excel. In your bottom turn the flex of the fins allow you to drive them hard and fast. As you're going through the bottom turn and your speed starts to drop off the fins give you something back. All that 'stored' energy from the flex is given back to you when you need it most. In doing so you don't get stuck through your turn. You can power all the way through to the lip and smack it at full velocity. We think Graham Ezzy hits the nail on the head:"The flex allows me to go more vertical and hit later lips. Instead of getting stuck in the curl, I can push on top of it and get more projection. Super cool."
K4 fins have been extensively tested in NZ at Pungarehu, Kina Rd, Waitara, The Ditch, Takapuna, Orewa, Omaha, Auckland harbour - and have delivered in all conditions!
Simply, the more energy you put into the initiation of a bottom/top turn the more performance the fins will then deliver back to you! The fins release the energy you put in at the exit of the turn in the form of a squirt of acceleration right where you want it!
K4 fins Summary:
- Turn harder with more grip and torque
- Track higher upwind
- Don't spin out but still easy to initiate and control slides
- Lighter than G10 wich makes a difference with 3 or 4 fins!
- 'Whippy' lively feel that makes your board come alive!
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K4 Fins: 17cm Twin Fin Set - US BoxItem Code: K4 FinsK4 Fins - SLOT BOX - Back Fin Range - Select your sizeItem Code: K4 FinsK4 Fins: Quad FRONT in Mini Tuttle & US Box - Select your finsItem Code: K4 Fins
K4 Fins Front Quads Specs
Mini Tuttle Fronts:
US Box Quad Fronts:LENGTH BOX TYPE AREA WEIGHT GMS 10cm MT QUAD 56 50 8cm MT QUAD 39 40 6cm MT QUAD 25 28
LENGTH BOX TYPE AREA HEAD WEIGHT GMS 9cm US FRONT 46 90 45 7cm US FRONT 30 86 33
