The Duotone Unit Foil Wing Strut Bladder Spare is an authentic factory replacement part designed to restore the structural rigidity and high-pressure performance of your wing's central strut. The central strut dictates the wing’s canopy tension, handling, and overall stability; if your wing collapses, twists, or loses air due to a puncture or compromised valve, replacing the strut bladder brings it back to original factory-spec pressure retention. These original parts cover all design generations spanning from 2023 through 2026, accommodating standard, SLS, and D-Lab constructions. Key Performance Features Generation-Specific Fitment: Duotone introduces annual profile modifications to the Unit's ergonomic strut geometry. These replacement bladders are precision-patterned to mirror the exact length, volume, and taper of your specific model year (2023–2026) and canopy size. High-Grade TPU Material: Fabricated from premium, ultra-lightweight Thermoplastic Polyurethane (TPU). This material maximizes structural elasticity and cold-water flexibility while minimizing overall swing-weight to keep the wing drifting naturally when flagged out. Pre-Welded Max Flow Valves: Every spare bladder comes equipped with authentic, factory-welded Duotone Max Flow inflation valves. The high-frequency thermo-welds are heavily reinforced to comfortably withstand the maximum PSI loads required for a completely stiff strut framework. Construction Variant Compatibility: Available in custom volumes tailored to the standard Dacron frames, the high-stiffness Penta TX layout of the SLS series, and the specialized dimensions of the Concept Blue and D-Lab constructions. Technical Selection Matrix Because internal bladder dimensions and valve positionings shift between model years, matching your specific wing configuration is critical for a smooth, wrinkle-free installation. Model Year Wing Variant Options Available Sizes Profile Characteristics 2023 Unit V3 / SLS / D-Lab 2.0m – 6.5m Tailored to the original ergonomic rigid strut angle. 2024 Unit / SLS / D-Lab 2.0m – 6.5m Accommodates variations in updated mid-canopy tensioning. 2025 – 2026 Unit / SLS / Concept Blue 2.0m – 6.5m+ Designed for contemporary segmented and streamlined struts. Installation Tips & Best Practices Verify Your Gear: Always check the small technical data tag printed on your wing’s canopy or near the inflation valves to confirm the precise model year, construction variant (Standard, SLS, Concept Blue, or D-Lab), and square meter size before installing the replacement. Utilize a Guide Line: When extracting the old damaged bladder, tie a clean retriever line to the internal tail loop. This leaves a direct guide track running through the strut sleeve, making it simple to pull the new spare back into position without twisting or bunching it up. Minimize Friction: Lightly dust the replacement TPU bladder with talcum powder prior to feeding it into the strut. This serves as a dry lubricant, allowing the bladder to unpack and expand flawlessly against the inner walls during your first high-pressure inflation, preventing accidental pinches or localized stretching.
