K4
K4 Futures Assy Pair Side Fins (x2) for Surfboard Paddleboard SUP Windsurf
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K4 Shark Slot Box Paddleboard, SUP, Windsurfing Fins
K4 Shark Slot Box Paddleboard, SUP, Windsurfing Fins
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. Our 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
Sold as a pair but if you would like a single for £11.25 just ask.Â
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K4 BUBBLE FREESTYLE WINDSURFING FIN US BOX
K4 BUBBLE FREESTYLE WINDSURFING FIN US BOX
Our Freestyle fin developed by Andy ‘Bubble’ Chambers. We originally had two very different prototypes; one worked great on flat water but would spin out in the chop, the other was rock solid in the chop but too grippy on flatwater. The BUBBLE freestyle fin has the perfect blend of grip to be secure in the chop and into carving manoeuvres, whilst still allowing plenty of release for double spins.
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K4 Futures Symm Pair Side Fins (x2) for Surfboard Paddleboard SUP Windsurf
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K4 Ezzy Assy 2 Degree Fins Slot box pair
K4 Ezzy Assy 2 Degree Fins Slot box pair
The Ezzy Asymmetric fin! More power, more drive, more speed, less drag.
The Ezzy front fin has a similer template to the Stubby but with a wider chord. A fully asymmetric foil with a radiused front and slightly positive inner foil to aid flow at high speeds. Choose a smaller fin size for less drag, same power. Great for huge gouging hooky cut backs!
SOLD AS PAIRS
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K4 Scorcher Front US MT SB Windsurfing Fin
Sold as singles for £19.95 each. Please order 2 items for a pair.
The Scorcher fronts. The best choice for your thruster fin board! A wider base for more drive, hold and gouging carves. Like the bigger Scorchers they are thin for maximum top speed and work particularly well for ‘wobble n ride’, onshore, or lighter winds. Available in 9, 10, 11 and 12cm with MT, US and SB (Slotbox/Starbox) heads. These have more drive and grip than the Shark II fronts.
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K4 3SW Freestyle Wave Windsurfing Power Box Fin for RRD Boards
K4 3SW Freestyle Freewave Freeride Windsurfing Power Box FinÂ
The 3SW freestyle-wave fin. Developed with help from the Official Test Centre Weymouth. A fin that will give you amazing speed and control, secure and loose carving on the fast flats or choppy waves. The material is K4’s ‘Super Stiff’, the ideal composite for freestyle-wave fins; great reflex, stiff enough for excellent acceleration and direct response, enough flex for speed, grip and control. The 3SW also works great in big wave boards.
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K4 FCS Thruster Fin Set for Surfboard Paddleboard SUP
"We’ve had a unanimous thumbs up for the K4 Fins SUP surf fins; from the Bluesmiths team using them in Maui perfection, to the likes of big wave ripper Finn Mullen in Ireland, through to those in the UK having their first experience of Stand Up Paddling.
We’re excited to bring you a substantial range of sizes in the K4 shop to tune your board for every wave. Our asymmetric front fins are available in 8, 10, 12, 13  and 14cm." - K4 Fins
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K4 FCS Surf Symm Side Front Fin Pair
These fins are Symmetrical.
"We’ve had a unanimous thumbs up for the K4 Fins SUP surf fins; from the Bluesmiths team using them in Maui perfection, to the likes of big wave ripper Finn Mullen in Ireland, through to those in the UK having their first experience of Stand Up Paddling.
We’re excited to bring you a substantial range of sizes in the K4 shop to tune your board for every wave. Our asymmetric front fins are available in 8, 10, 12, 13  and 14cm." - K4 Fins
These K4 surfboard FCS fins are perfect for directional kiteboard surfboards, normal surfboards and wave sups. Buy the 10cm ones for a looser feel or for smaller boards and buy the 12cm for pretty much everything else.
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K4 Incinerator Rear US SB Windsurfing Fin
The Incinerators! Our new quad fins! Narrower based and a more upright template to give your 4 fin set up more speed and lightning fast direction changes.
There haven’t been any contests this year to prove the worth of these new fins, but Leon took the proto’s to 6th place in the 2019 Aloha Classic with some of the best turns ever seen at the event!
Designed with Adam Lewis who’s been looking to get the best performance from his quads.
Note: You may want to size these a little larger (0.5cm) than your normal preference due to the reduced area and base width.
Graphic by http://www.supernaturemarketing.co.uk
US and SB head.
(SB – Slot box head will also fit the new Starbox).
13.5 – 17cm.
Sold as singles for £39.90
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K4 Incinerator Front US MT SB Windsurfing Fin
The Incinerators. The best choice for your quad fin board! A narrower base for higher speeds and lightning fast direction changes, combined with a larger area tip for more hold and power. Designed with Adam Lewis who’s been looking to get the best performance from his quads.
Available in 8, 9, 10, 11cm with MT, US and SB (Slotbox/Starbox) heads. Select one size larger if you wish to have the same hold as our other fronts.
Sold as singles for £19.95 each. Please order 2 items for a pair.
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K4 Futures Thruster Fin Set (x3) for Surfboard Paddleboard SUP
"We’ve had a unanimous thumbs up for the K4 Fins SUP surf fins; from the Bluesmiths team using them in Maui perfection, to the likes of big wave ripper Finn Mullen in Ireland, through to those in the UK having their first experience of Stand Up Paddling.
We’re excited to bring you a substantial range of sizes in the K4 shop to tune your board for every wave.
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This product has multiple variants. The options may be chosen on the product page
K4 Shark 2 Mini Tuttle Paddleboard,SUP, Windsurf Fins
K4 Shark Mini Tuttle Paddleboard,SUP, Windsurf Fins
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. Our 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.
Sold as singles. If you want a pair, please buy 2.
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This product has multiple variants. The options may be chosen on the product page