Midlength Mk II X-Form Board - Armstrong

The Midlength Mk II marks the next step forward in Armstrong's board design, debuting our 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. Perfect for: Winging Parawinging, Foil Drive (no antenna needed) and even prone for those easy paddle ins. Board Sizes 38L – 4'8" x 18 1/8" x 3 1/4" - 3.65kg 45L – 5'0" x 18 5/8" x 3 1/2" - 3.8kg 55L – 5'4" x 19 1/8" x 4" - 4kg 65L – 5'8" x 19 5/8" x 4 1/4" - 4.2kg 75L – 6'0" x 20 3/8" x 4 3/8" - 4.5kg 85L – 6'4" x 21 3/8" x 4 1/2" - 4.8kg 100L – 6'8" x 22 1/4" x 4 7/8" - 5.2kg 115L – 6'11" x 22 3/4" x 5 1/4" - 5.7kg 130L – 7'2" x 23 1/4" x 5 5/8 - 5.9kg 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. Built around Armstrong's new X-Form Precision Molded Board Technology, the Midlength Mk II 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. On the water, the Midlength Mk II feels composed, responsive, and predictable. The thinner X-Form profile delivers a more direct connection to the foil while the refined bottom design reduces sticking and tracking for cleaner touchdowns and faster recovery. Combined with a surf-style squash tail, Forward Geometry foil track, integrated carbon foil tracks, dual carbon stringer system, and redesigned deck grip, the Midlength Mk II delivers greater control, confidence, and progression across all foiling disciplines.