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Armstrong Foils Mid-Length FG Foilboard (all sizes)

Armstrong Foils
  • $2,599.00 NZD
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Armstrong Foils Midlength FG Foilboard 

The new mid-length from Armstrong is, without a doubt, the best and most fun light wind board I've ever used.

I'm riding 865PM Mast, 60 Fuse, HA1080, Speed 180 with 6'1 XPS. Wind around 10 knots with current going the same way as wind 2-3 knots. I'm 86kg 188cm, and I'm riding the 75L 6'1 here. My other wing boards are the 58L FG, 80L FG and 121L 7'7 DW. This new Mid could narrow down my quiver and give me a fantastic light wind board I can still turn, crave and jump.

NOTE: This is not a beginner's board. It's narrow and somewhat tippy, so only buy it if you can stay on foil through turns. Pump the board and wing to get off the water. This board is easy for experienced foilers who can comfortably ride boards under their body weight. I've ridden this a fair bit now. If you want sizing help, comment below.

NOTE: Preorders are Open Now for Late May Delivery. See us at Underground Surf Orewa Beach Auckland, NZ or contact for more info.

The Armstrong Midlength FG Board Range - Inspired by the soul of surfing

The Midlength is more than a board, it’s an approach.

It’s the unconventional idea that in a world hellbent on giving you so many choices that you can hardly pick what to take out for a session, doing more with less is an inspiring alternative. True to its surf-inspired name, the new Midlength board range truly redefines when and how you can go foiling. It’s the ace up your sleeve, the session saver, hell, it’s a fast-paddling, rippable flight time booster that’s your new superpower. It gives you the freedom to define how you ride. The choice is yours.

Five sizes from 5’1 (45L) to 6’5 (85L).

We hit the sweet spot

A uniquely happy medium.

Slotting in between our Prone, Wing and Downwind boards, the Midlength is a session saver on small or light days with excellent paddle power and an easy release to get you up on foil. That speed and efficiency work equally well to boost your confidence when hunting down bigger surf; the Midlength paddles like a rhino chaser that transforms into your shortboard once in flight. Forget choosing the perfect board, just get on the water and let the board melt away as you take in everything else.

A goldilocks ratio of dimensions and volume makes for optimum glide, stability and manoevrability so you don’t need to be a pro to up your time on foil.

From the shaping bay

Outline: A pointed but not overly sharp nose, gently tapering midsection and pulled in tail make for an efficient glider for prone paddling into either small or large surf. That glide translates remarkably well when winging, too – the Midlength is an amazing light wind machine that rockets off the water with nearly the ease of a Downwind board.
Rocker and rails: Progressive rocker from the nose to the foil tracks keeps things lively in the pocket and makes touchdown recovery easier, and tail kick out the back makes for easy pumping and a clean release on launch. Soft rails up front progress into harder lines out the back for efficient flow and balanced on-water tracking and responsiveness.
Bottom: Pulling from the Downwind boards, a subtle double concave at the nose works its way flat at the foil tracks and finally into the diamond-V tail shape for a quick pop up and maximum un-stickiness when touching down. If a board ever wanted to stay in the air, this would be it.

More grip, more control, more soul

Redefine your footwork.

Like the deck grip on our Wing FG and DW foilboards, the Midlength's deck grip is tailored specifically to provide you with maximum control and comfort to enable your style across different foil sports. In conjunction with the Midlength's flat deck, the grip features raised arch bars above the foil tracks and elevated wedges in the rear of the pad for intuitive and unrestricted foot placement when soul carving across a wave face or getting creative with your foot placement when winging.

Proven construction

Maximum structural rigidity creates a sublime feel underfoot.

The ultra stiff double skin carbon PVC sandwich combined with Armstrong’s reputed i-beam top to bottom dual stringers provides maximum structural rigidity and durability. Proprietary carbon fibre foil tracks are keyed directly into the stringer fibres for a fully integrated construction.


  • Surfboard-Inspired Outline
  • Looking to midlength surfboards for inspiration, the outline balances stability with efficient glide.
  • Downwind-Inspired Bottom Contours
  • Subtle double concave to flat at the foil tracks with a diamond-V tail out the back. Chines run the full length of the board.
  • Split Foredeck
  • The raised central portion of the deck ahead of the pad helps shed water quickly.
  • Footstrap Inserts
  • PVC footstrap inserts for self-tapping screws; optimised for V-strap front footstrap.
  • Vent
  • Allows the board to breathe in a range of temperatures and maintain its structural integrity.
  • Raised Deck Wedges and Arch Bars
  • An intuitive foot placement reference with extra grip for prone waveriding or winging.
  • Forward Geometry Foil Track
  • Our proprietary Forward Geometry foil track fasttracks your progression. This system is designed to work with any foil brand.
  • Carbon Foil Tracks
  • Industry leading durability.
  • Dual Carbon Stringer System
  • Maximum rigidity for sublime feel underfoot.


  • 45L: 5’1 / 155cm x 17” / 43cm x 3 ¾” / 9.5cm
  • 55L: 5’5 / 165cm x 18” / 45.7cm x 4 1/8” / 10.5cm
  • 65L: 5’9 / 175cm x 19” / 48.3cm x 4 1/2” / 11.4cm
  • 75L: 6’1 / 185.5cm x 20” / 50.8cm x 4 5/8” / 11.7cm
  • 85L: 6’5 / 195.5cm x 20 ¾” / 52.7cm x 4 7/8” / 12.4cm




Express Worldwide Shipping on Armstrong Foils:

Australia Free Express Shipping on Armstrong wings, wind wings and boards as part of a full kit or combo package. We are happy to change mast size, fuse size, rear wing on any kit.  Armstrong Boards can be shipped on a case by case basis please contact Nick for a quote. If you are wanting a custom kit or have any questions contact or call Nick on +64212891660 for a tailored quote. 

Rest of World.  Exclusive to Armstrong product onlyFree shipping on all foils and wind wings minimum spend $750NZD.  You can ONLY have Armstrong products in your cart. Minimum Spend $750NZD for free shipping. Boards are NOT free shipping unless as part of a full foil combo. Single Boards can be shipped but only on a case-by-case basis. Allow 7-21 Days for shipping depending on where you live.  If you want a custom kit or have any questions, contact or call Nick at +64212891660 for a tailored quote.

All prices on our website are in New Zealand Dollars.  To view the exchange rate to USD:

12 Months Interest-Free Finance with Q Card. Simple and Easy to apply. Find out more about this, plus Afterpay HERE.

Learn to foil: We'll take you from zero to HERO with our private foil lessons! Start on a massive 8'6" foil board being towed behind a jetski, as your skills develop we'll give you smaller boards to try. Two lessons are refundable with the purchase of any complete Armstrong foil combo (or one lesson refunded with the purchase of any wing & mast combo). Call or email on +64212891660 to book your lesson today. We also have full demo range including A Wind Wings, Boards and Foils.

All orders will be shipped from Underground Skate limited - 306 Hibiscus Coast Highway, Orewa, 0931

If you have any questions about shipping, then please email us on 8am - 3.30pm Week days or use our website chat feature and we'll be happy to help you out.  

Please do not sign for your package if the packaging is damaged in anyway as Underground Skate will not be liable or any damages that are signed for and accepted on delivery.   All items are packaged with extreme care, under CCTV surveillance. As freight is handled by third parties, we advise you to thoroughly inspect your Good(s) for damage in transit prior to acceptance. By attesting your signature, you are confirming possession and accept your Good(s) as received.

Parcels are not collected on weekends, so orders received after 1pm Friday will be shipped the following Monday or available for 'click and collect' from our store that is open weekend. (Please confirm your order is ready before driving to the store.)


Address Checker - Please check your address to avoid delays if you select non rural and you are rural

For smaller items:

$4.99 - NZ WIDE (Non Rural) 

$9.99 - NZ WIDE (Rural)

We use NZ Couriers or Fastway Couriers to ship your goods nationwide. You will receive a tracking number in an e-mail once your order is dispatched from Underground in Orewa Auckland. 

If you have any questions, please contact us via our Chat Feature or email us on and we'll be happy to help you out.

For Surfboards, Sups and larger items:

$29.99 NZ WIDE - Surfboards & Foil

$59.99 NZ WIDE - Sups

Please note: All SALE Boards will incurr a shipping surcharge to cover freight as the above shipping prices are discounted for Full Price boards only and we can only ship to depots.

For Shipping Costs on Surfboards, Foils & Sups direct to your own address please contact us via our Chat Feature or emails us on and we'll be happy to help you out.

Boards 7'4 and under will be delivered using Fastway Couriers.

Boards 7'6 and larger will be delivered to the nearest Mainfreight (North Island) or Bascik Depot (South Island) where you will need to arrange collection. 

Unfortunately, we are unable to deliver Surfboards or SUP's to rural areas.

SURFBOARDS, SUPS and FOILS – please do not sign for your package if the packaging is damaged in anyway as Underground Surf will not be liable or any damages that are signed for and accepted on delivery.   All boards are packaged under CTV surveillance and are marked as Fragile with a “Do not sign for if Damaged” A4 note.


Are you a COAST LOCAL that's gutted when you can't make it into the store for some fresh Kicks or a Tee before a night out or are your kids in need of some new School Shoes but you just can't make it in after work, or its nearly the weekend and you need a new board a-sap?

Well, we have the solution for you, since you are a COAST LOCAL we will deliver to you... SAME DAY DOOR TO DOOR SERVICE!
Orders placed before 3 pm Monday to Friday will be delivered to your door between 4pm - 7pm the same day.

Please select COAST under Shipping Options..