Armstrong Midlength Mk II X-Form Board

Designed For the Next Era of Foiling The Midlength Mk II marks the next step forward in Armstrong's board design, debuting their all-new molded board technology. Built to deliver a lighter, stronger, and more connected ride, it represents a major leap in durability, response, and long-term performance. Refined through years of testing in New Zealand's most demanding conditions, the Midlength Mk II blends Armstrong's signature feel with a new level of control and consistency. It's designed not just to perform, but to keep performing session after session. Optimal Strength to Weight The new Armstrong X-Form precision molded board technology was developed to reduce weight while solving long-standing durability and consistency challenges, this construction delivers an uncompromising strength to weight ratio with precision-tuned performance. Stronger, stiffer, and more durable than traditional constructions, it maintains the connected feel Armstrong boards are known for while eliminating softening and fatigue over time. Built to Last From the beginning, Armstrong was built on a simple belief: riders should be able to trust their equipment in the harshest conditions, every day. X-Form was born from that same mindset. When existing manufacturing methods couldn't deliver the strength, precision, and durability that was envisioned, Armstrong didn't compromise, they built their own purpose designed factory. X-Form represents their commitment to doing things properly, using precision manufacturing to create boards that are stronger, more consistent, and built to progress with riders over time. Features List: • X-Form - Precision Molded Board Technology • Dual Carbon Stringer System • Carbon Foil Tracks • Forward Geometry Foil Track • Foil Drive Compatible Window • Surf Style Squash Tail • Displacement Hull • Raised Deck Wedges & Arch Bars • Foot Strap Inserts • New deck grip Specifications   ML 38 ML 45 ML 55 ML 65 ML 75 ML 85 ML 100 ML 115 ML 130 Length 4'8 5'0 5'4 5'8 6'0 6'4 6'8 6'11 7'2 Width 18 1/8" 18 5/8" 19 1/8" 19 5/8" 20 3/8" 21 3/8" 22 1/4" 22 3/4" 23 1/4" Thickness 3 1/4" 3 1/2" 4" 4 1/4" 4 3/8" 4 1/2" 4 7/8" 5 1/4" 5 5/8" Weight 3.65kg 3.8kg 4kg 4.2kg 4.5kg 4.8kg 5.2kg 5.7kg 5.9kg Weights are approximate and may vary slightly due to manufacturing tolerances Protective Bag Included   Construction: X-Form - Precision Molded Board Technology From the beginning, Armstrong was built on a simple belief: riders should be able to trust their equipment in the harshest conditions, every day. X-Form was born from that same mindset. When existing manufacturing methods couldn't deliver the strength, precision, and durability we envisioned, we didn't compromise, we built our own purpose-designed factory. X-Form represents our commitment to doing things properly, using precision manufacturing to create boards that are stronger, more consistent, and built to progress with riders over time.   Why we built X-Form? Optimal Strength to Weight Ratio. X-Form was developed to reduce weight while solving long-standing durability and consistency challenges, this construction delivers an uncompromising strength to weight ratio with precision-tuned performance. Because performance means nothing if your gear doesn’t last. By eliminating the inconsistencies and long-term fatigue associated with traditional board construction, X-Form creates boards that are lighter, stronger, more durable, and more connected underfoot. The result is predictable performance, increased longevity, and a direct connection to the foil that riders can feel every session.   What exactly is X-Form? Exact Form, Every Time. X-Form is Armstrong's precision molded board technology and manufacturing process. Developed using proprietary CNC-machined molds, precision- engineered internal components, and advanced composite construction, every X- Form board is formed in a single molding cycle under uniform pressure and temperature. The process permanently locks in the board's rocker lines, rails, bevels, and contours while ensuring every internal component is aligned to exact tolerances. Drawing on Armstrong's experience designing and manufacturing high-precision molded foils, X-Form brings the same level of manufacturing accuracy and consistency to board construction.   X-Form Benefits: More Direct Connection The strength and precision of X-Form construction allow for a considerably thinner board profile, creating a more direct connection to the foil. The result is cleaner feedback underfoot, improved control, and a more responsive feel that helps riders stay connected to what the foil is doing. Built to Last Designed to withstand the demands of everyday progression, X-Form delivers a stronger, stiffer, and more durable construction than traditional board manufacturing methods. The precision molded process helps maintain the board's structural integrity and ride characteristics over time, reducing softening and fatigue session after session.   X-Form Features: Foil Assist Compatible Window Foil Assist compatible window for clean, uninterrupted remote signal. Double Sandwich Foot Area Complete PVC wrap of deck and underside of board with extra reinforced foot panels which are doubled up with another layer of high density PVC to handle the heaviest of landings. High Density PVC Wrap Entire internal surface of board wrapped in high density PVC. Even if it does crack it won't absorb water like EPS foam would. High Density PVC Rails High density PVC foam wrap of the whole perimeter of board. Protects the areas of the board most at risk to damage. Ultralight Large Sphere EPS Core The high-pressure molded layup is super stiff and the ultralight EPS core absorbs shocks for a solid and smooth ride. Dual Carbon Stringer System Armstrong's reputed I-beam top-to-bottom dual carbon stringers provide maximum structural rigidity and durability by fully connecting the deck and bottom of the board. Carbon Foil Tracks Proprietary carbon fiber foil tracks are keyed directly into the stringer fibers along with carbon fiber for a fully integrated and ultra-strong construction where it counts most.   Shape & Outline Balanced, Responsive, Predictable. On the water, the Midlength Mk II feels composed, responsive, and predictable. The improved stiffness profile creates a clean, connected sensation underfoot, allowing riders to feel exactly what the foil is doing. The result is more confidence at speed, better control in critical moments, and a smoother, more intuitive riding experience across disciplines. Refined Profile Thanks to the new X-Form construction the refined profile features a considerably thinner board, delivering a more direct connection to the foil and reducing unwanted touch-downs. Optimized Volume Distribution Optimized volume distribution maintains stability and balance while allowing the board to sit lower to the water, creating a cleaner, more responsive feel underfoot. The result is a thinner, more connected board that enhances control, feedback, and confidence across all conditions. Reduced Sticking & Tracking The new bottom design is shaped to optimize fluid dynamics at every phase of flight. A refined double concave transitioning to a subtle V helps generate early lift, making take-offs easier and more efficient while smoothing touch-downs. When the board reconnects with the water, it glances off the surface rather than sticking or tracking, allowing for quick, clean release back onto foil. Shallower chines and a flatter bottom through the rear further reduce drag and resistance, creating a fast, predictable feel that supports take-offs and landings. Surf Style Squash Tail The surf-style squashed tail adds stability when getting onto the board, making early positioning and balance more intuitive. By allowing the rails to remain more parallel for longer, the shape increases surface efficiency and helps generate speed quickly, improving take-off performance. The result is a tail design that feels stable underfoot while delivering faster, more confident launches onto foil. Forward Geometry Foil Track Armstrong's Forward Geometry concept, introduced in 2021, redefined foilboard design by placing the foil more centrally to reduce swing weight and increase responsiveness while remaining compatible with any foil system. The Midlength Mk II continues this legacy with FG foil tracks positioned further forward for enhanced maneuverability and a more connected feel on foil across all board sizes. Deck Grip More Grip, More Control The new Midlength Mk II deck grip is designed to reduce weight while increasing grip and control underfoot. Despite the lighter construction, it maintains Armstrong's signature soft feel, providing comfort and confidence for riders learning new skills, using Foil Assist, or spending extended sessions on an e-foil. Deck Grip Features: • Dual Foot Arch Bars - Intuitive foot positioning. • Rear Foot Wedges - Intuitive foot positioning relative to mast position. • Foil Track Indicators - For foot positioning relative to mast position. • Triangle Cut Outs - Reduce weight and increase grip.