Skill level
- Intermediate
- Advanced
- Expert
ARMSTRONG · Designed for the Next Era of Foiling
ARMSTRONG MIDLENGTH Mk II X-FORM
Glide • Efficiency • Connection
The Armstrong Midlength Mk II X-Form is much more than the evolution of the original Midlength—it represents a complete rethink of how a modern foil board should perform.
Combining Armstrong's revolutionary X-Form Precision Molded Construction with a completely redesigned outline, refined bottom contours and Forward Geometry foil positioning, the Midlength Mk II delivers a riding experience that feels lighter, more direct and more efficient than ever before.
Whether you're wing foiling in marginal wind, exploring long ocean swell, riding a parawing or integrating a Foil Drive system, the Midlength Mk II makes getting onto foil easier while maintaining the agile, connected feeling Armstrong is famous for.
This is not simply an updated board.
It is Armstrong's vision of where modern foiling is heading.
Price range: $2,249.00 through $2,649.00
OVERVIEW
What this product is for.
Why You'll Love It
✓ Brand-new X-Form Precision Molded Construction
✓ Significantly lighter and stronger
✓ More direct connection to the foil
✓ Earlier lift with less effort
✓ Refined touchdown recovery
✓ Optimised volume distribution
✓ Forward Geometry foil tracks
✓ Redesigned lightweight deck grip
✓ Foil Drive compatible
✓ Premium protective board bag included
What Is X-Form?
The Biggest Leap in Armstrong Board Construction
The Midlength Mk II introduces X-Form, Armstrong's proprietary precision-molded board technology.
Rather than relying on traditional hand-laminated construction, X-Form uses a highly controlled molding process that produces boards with exceptional consistency, strength and stiffness.
The result is a board that is:
- Lighter
- Stronger
- Stiffer
- More impact resistant
- More durable over time
Most importantly...
It maintains that performance season after season instead of gradually softening like many conventional constructions.
Why X-Form Changes the Ride
The benefits aren't only structural.
Because X-Form allows Armstrong engineers to build an exceptionally strong board with a thinner profile, riders stand noticeably closer to the foil.
That creates:
✓ Better foil feedback
✓ Faster response
✓ More precise foot pressure
✓ Cleaner carving
✓ Improved control at speed
Instead of feeling like you're riding on top of a board...
You feel connected directly to the foil beneath your feet.
Completely New Shape
The Midlength Mk II isn't simply the original Midlength with a new construction.
Armstrong redesigned virtually every part of the board.
Refined Outline
The new outline improves efficiency while keeping the board responsive once airborne.
Optimised Volume Distribution
Volume has been redistributed to improve stability without making the board feel bulky.
This makes balancing easier during starts while maintaining an agile feeling in flight.
Refined Bottom Contours
The new hull releases from the water much more cleanly.
Benefits include:
- Earlier lift
- Cleaner touchdowns
- Faster recovery
- Reduced sticking
- Less tracking through the water
Surf Style Squash Tail
The redesigned tail improves acceleration while maintaining excellent stability during take-off.
It also generates speed efficiently in marginal conditions.
Forward Geometry Foil Tracks
Armstrong's proprietary Forward Geometry places the foil further beneath the rider.
Benefits include:
- Reduced swing weight
- More responsive handling
- Better balance
- Faster turning
- Improved pumping efficiency
The system remains compatible with virtually any foil mounting pattern.
Available Sizes
| Volume | Length | Width | Weight |
|---|---|---|---|
| 38 L | 4'8" | 18⅛" | 3.65 kg |
| 45 L | 5'0" | 18⅝" | 3.8 kg |
| 55 L | 5'4" | 19⅛" | 4.0 kg |
| 65 L | 5'8" | 19⅝" | 4.2 kg |
| 75 L | 6'0" | 20⅜" | 4.5 kg |
| 85 L | 6'4" | 21⅜" | 4.8 kg |
| 100 L | 6'8" | 22¼" | 5.2 kg |
| 115 L | 6'11" | 22¾" | 5.7 kg |
| 130 L | 7'2" | 23¼" | 5.9 kg |
Which Size Should You Choose?
38–45 L
Ideal for:
- Lightweight advanced riders
- Strong wind
- Performance winging
- Parawing
- Technical wave riding
55–75 L
The sweet spot for many experienced wing foilers.
Perfect for:
- Everyday riding
- Mui Ne conditions
- Advanced freeride
- Efficient pumping
85–130 L
Designed for:
- Larger riders
- Light wind
- Progression
- Downwind entry
- Foil Drive
- Maximum efficiency
Who Is This Board For?
The Midlength Mk II X-Form is perfect if you:
✓ Want to fly earlier in lighter wind.
✓ Want to ride a smaller hand wing.
✓ Love covering long distances.
✓ Are interested in parawinging.
✓ Want one board for multiple disciplines.
✓ Value efficiency over aggressive freestyle.
Who Should NOT Buy This Board?
This may not be the right board if:
✗ Your sessions focus almost entirely on freestyle tricks.
✗ Your local spot is consistently 25–35 knots.
✗ You prioritise jumps over glide.
✗ You want the smallest possible board.
In those situations, the FG Wing Board is generally the better choice.
Midlength Mk II vs FG Wing Board
| FG Wing Board | Midlength Mk II X-Form |
|---|---|
| Compact shape | Longer waterline |
| Earlier progression | Greater efficiency |
| Better for jumping | Better for glide |
| Everyday freeride | Light wind specialist |
| Smaller footprint | Longer flights |
| Highly manoeuvrable | Exceptional efficiency |
Choose the FG if:
You love powered riding, jumps and compact handling.
Choose the Midlength Mk II if:
You want to maximise every session, especially in lighter wind.
Key characteristics
- Earlier take-offs
- Maximum efficiency
- Longer flights
- Direct foil connection
- Outstanding durability
FOILLAB TESTED
Real World Performance
Experience
The Midlength Mk II X-Form feels like a completely new generation of foil board.
The most noticeable improvement isn’t simply that it’s lighter—it’s how connected it feels. Standing closer to the foil gives immediate feedback through your feet, making every pump, carve and touchdown feel cleaner and more precise.
The redesigned hull recovers remarkably well after touchdowns, allowing you to maintain speed instead of losing momentum. Combined with the longer waterline, it extends sessions into lighter conditions where a traditional wing board would require significantly more effort.
For riders in Mui Ne, it’s one of the most exciting boards Armstrong has ever produced. It allows you to ride smaller wings, get flying earlier and spend more time connected to the foil.
Things We Love
- Revolutionary X-Form construction
- Earlier take-offs
- Incredible glide
- More direct foil feel
- Outstanding touchdown recovery
- Premium finish
- Built to last
Things To Know
The Midlength Mk II rewards a slightly different riding technique than a compact wing board.
Give yourself two or three sessions to adapt.
Once you understand how efficiently the board accelerates, it’s difficult to return to a traditional shape.
Best Conditions
- 8–22 knots
- Open ocean
- Rolling swell
- Light wind
- Parawing
- Foil Drive
RIDER PROFILE
Best For
- Light Wind Wing Foiling
- Parawing
- Open Ocean Cruising
- Downwind Progression
- Foil Drive
- Everyday Freeride
RECOMMENDED SETUPS
Our Favourite Combinations
Light Wind Dream Setup
Midlength Mk II 75 L HA Front Foil Speed 180 Stabilizer Performance-X Mast 865 Titanium 60 A-Wing XPS Mk II 5.5An incredibly efficient setup that gets flying with minimal effort.
Everyday Mui Ne Setup
Midlength Mk II 65 L MA Mk II 890 Surf Mk II Stabilizer Performance Mast Mk II 865 Titanium 60 A-Wing XPS Mk II 4.5Perfect for riders looking to maximise water time across a wide range of conditions.
Ultimate Parawing Setup
Midlength Mk II 55 L HA Front Foil Speed 180 Stabilizer Performance-X Mast Titanium 60Built for glide, efficiency and effortless swell connection.
FAQ
Frequently Asked Questions
Is the Midlength Mk II only for light wind?
No.
While it excels in marginal conditions, it also performs exceptionally well in everyday freeride, parawing and Foil Drive applications.
What is the biggest improvement over the previous Midlength?
The combination of X-Form construction, the thinner profile, the new hull design and the Forward Geometry foil tracks creates a board that is noticeably more responsive, durable and efficient than the previous generation.
Is it beginner friendly?
Intermediate riders will adapt quickly, while confident beginners looking for a light-wind progression board can also benefit by choosing the appropriate volume.
Is it compatible with Foil Drive?
Yes. The board includes an optimised signal window specifically designed for seamless Foil Assist integration.
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FOILLAB VERDICT
Final Thoughts
FoilLab Innovation Award
The Armstrong Midlength Mk II X-Form isn’t just another board—it represents the future of wing foiling. The combination of revolutionary X-Form construction, refined hydrodynamics and exceptional efficiency makes it one of the most impressive boards Armstrong has ever produced. If your goal is to fly earlier, ride longer and experience a more connected feel than ever before, the Midlength Mk II X-Form sets a new benchmark for modern foil board design.
