Regular price


The F-ONE aluminum mast can be connected to the board with several options. Choose from a 4-bolt top plate, a standard Tuttle head, a KF or a DKF head.

All versions are fastened to the mast through a sleeve and a two-bolt system. The mast top parts are machined out of solid blocks of 6061 aluminum. The accuracy of the CNC makes sure the geometry of the connection is perfect. Stainless steel inserts are used to preserve the durability of the fastening connections.

The Top Plate has become standard on the market and is compatible with any board featuring a Twin-Tracks system. The spacing we use for the four screws is 160×90 mm, but our latest version also features an option for 165×90 mm.

The Top Tuttle makes F-ONE foils compatible with all Tuttle boards. The Tuttle format is the original and standard one. A flange has been added around the base of the head to better spread the load through the structure of the board. The KF and DKF heads make current F-ONE foils compatible with kite or SUP foil boards produced previously with these boxes.

How much are my shipping costs and how long do I have to wait for my delivery?

Within Germany
The shipping costs for standard shipping within Germany for goods worth less than 100 euros are a flat rate of 7.50 euros for shipping as an insured package. For goods valued at 100 euros or more, Kite District will cover the shipping costs. You will usually receive your order 2-4 working days after receipt of payment.
Belgium, Denmark, France, Italy, Netherlands and Poland
To the countries Belgium, Denmark, France, Italy, Netherlands and Poland
If the value of the goods is less than 150 euros, we charge a flat rate of 12.50 euros for shipping as an insured package. For goods valued at 150 euros or more, we will cover the shipping costs. You will usually receive your order 2-8 working days after receipt of payment.
Åland Islands, Albania, Andorra, Armenia, Austria, Belarus, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Estonia, Faroe Islands, Finland, Georgia, Gibraltar, Greece, Greenland, Guadeloupe, Guernsey, Vatican City, Hungary, Iceland, Ireland, Isle of Man, Jersey, Kosovo, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Mayotte, Moldova, Monaco, Montenegro, North Macedonia, Norway, Portugal, Reunion, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Svalbard and Jan Mayen, Sweden, Switzerland, Turkey, Ukraine, United Kingdom
In the countries mentioned above, we charge a flat rate of 15 euros for shipping as an insured package for goods worth less than 200 euros. For goods valued at 200 euros or more, we will cover the shipping costs.
As a rule, you can expect us to ship your goods immediately after receipt of payment. How long it takes for your payment to reach us depends on the payment method you choose, the period ranges from immediately (credit card via PayPal) to 4 working days (bank transfer from a bank that is not part of the Sparkasse Association and is not located in Düsseldorf).

Has my order been received in the KBC shop?

As soon as your order has been received in the KBC shop, you will receive an email from us confirming receipt of the order and, for security reasons, listing all the details again, such as the items ordered, shipping and billing address, etc. When you receive the order confirmation, you can be sure that your order has been received and will be processed by us immediately.

How can I view my order status?

You will be informed by email about the status of your order. These are the emails you receive from us by default:
  • Order confirmation stating the ordered goods and the desired shipping and billing address
  • Shipping confirmation with tracking number
You don't have a customer account or anything similar that you can view in the KBC shop.

How can I pay?

You currently have the following payment options: PayPal, credit card or advance payment by bank transfer. A delivery on account is not possible.

Can I also pay by invoice?

Payment by invoice in the KBC shop is not possible.

I have ordered and now I would like to change something. How does it work?

A purchase contract is concluded when we have sent you your order confirmation. Your order number will also be mentioned in this email. Simply inform us in writing (by email, fax or letter) that you would like to cancel your order. The easiest way to do this is to reply to the shipping confirmation email.
You can only cancel your order as a whole, you cannot cancel or change parts or individual items.
So after you have completely canceled your order, you simply order again and simply change what you want.

How does the tracking number work?

Our shipping partner UPS offers you the opportunity to use a tracking number to track where your package with your goods is currently located and when you can expect delivery. You will receive the tracking number for your order and the link by email as soon as we have shipped your package.
Sometimes it takes half a day to a whole day for our shipping partner to register your package in their system - so you shouldn't be too impatient and click on the link immediately after receiving the shipping confirmation. But it should work the next day.

How can I take advantage of the free instruction when purchasing a kite?

If you buy a kite in the KBC shop, you will receive a voucher with your kite that you can redeem in any of our clubs. To do this, you simply call your preferred KBC center so that you can book an appointment. Take your voucher with you to the club on the agreed date, where you will receive your one-hour product training from a trained kite instructor.

How can I contact you?

You can find ways to contact us here .

Men's Sizes - Regular

Size weight (kg) Height (cm) chest circumference (cm) Waist circumference (cm)
46/XS 54-64 168-173 92-96 69-75
48/p 61-70 171-176 96-100 75-81
50/m 68-77 173-178 100-106 80-86
52/L 77-86 177-181 106-111 85-91
54/XL 86-95 178-186 111-116 90-96
56/XXL 95-104 183-188 116-121 95-101
58/XXXL 104-113 185-190 121-127 99-106
60/4XL 113-123 190-196 125-130 105-112

Men's Sizes - Long

Size weight (kg) Height (cm) chest circumference (cm) Waist circumference (cm)
47/XST 54-64 171-176 92-96 69-75
49/ST 63-72 178-186 96-100 71-79
51/MT 70-79 183-190 100-106 80-86
53/LT 79-88 188-196 106-111 85-91
55/XLT 88-97 188-196 111-116 90-96

Men's Sizes - Short

Size weight (kg) Height (cm) chest circumference (cm) Waist circumference (cm)
25/MS 68-77 171-176 100-106 80-86
26/LS 79-88 173-178 106-111 85-91
27/XLS 86-95 177-181 111-116 90-96
28/XXLS 93-102 178-186 116-121 95-101
29/3XLS 100-109 183-188 121-127 99-106

women's sizes

Size weight (kg) Height (cm) chest circumference (cm) Waist circumference (cm)
36/XS/6 48-57 165-170 79-84 61-64
38/S/8 50-59 168-174 82-87 63-68
40/M/10 54-64 171-177 84-91 64-71
42/L/12 59-68 173-179 89-95 71-76
44/XL/14 64-73 175-181 94-99 73-78

kids sizes

Size weight (kg) Height (cm) chest circumference (cm) Waist circumference (cm)
4XS 86-98
3XS 98-104
2XS 110-116
XS-4 116-122
S-6 128-134
M-8 27-34 135-140 70-74 52-65
L-10 34-43 143-148 73-77 56-60
XL-12 41-50 149-154 76-80 60-64
2XL-14 47-54 155-160 78-82 64-67
3XL-16 54-61 161-166 81-85 67-71


Waist Girth 68-72 72-79 79-86 86-93 93-100 100-108
Spreader bar
(in CM)
22 24 28 32 34 34

Wetsuits Men

body height 160-172 164-176 172-183 175-185 177-187 179-190 182-192
Chest girth 88-94 91-97 97-103 100-106 103-109 107-114 110-118
Waist girth 68-76 71-79 76-84 80-88 84-92 88-96 91-99
hip girth 88-94 90-96 94-100 97-103 100-106 103-109 104-112
Average weight
60 64 72 75 80 85 90

Wetsuit girl

body height 156-164 160-168 164-172 172-180 176-184
Chest girth 80-88 84-92 88-96 96-104 100-108
Waist girth 60-70 65-74 70-79 79-90 83-103
hip girth 84-92 88-96 92-100 100-110 105-111
Average weight
47 49 55 68 75


Inner sole length

20 21 22 23 24 25 25.5 26 27 28
US size 5 5.5 6 7 8th 9 9.5 10 11 12
EU size 37 38 39 40 41 42 43 44 45 46


1.Glove length
16 17.5 19 20.5
2. Palm width
9.5 10 10.5 11


Head circumference
-54 55-57 58-60 61+

board shorts

28/XS 30/p 31/M 32/M 33/M 34/L 36/XL
Hip Girth
74 76 79 84 86 89 94

Impact vest

body height 164-176 172-183 176-187 179-190
Chest girth 91-97 97-103 103-109 107-114
Waist girth 71-79 76-86 83-93 90-98
Average weight
64 72 80 90



88-92 92-95 95-99 99-104 104-109

78-82 82-86 86-91 91-96 96-102



90-95 95-99 99-104 104-109 109-116

80-86 86-91 91-96 96-102 102-109