49N Superlight Tube A performance-oriented butyl inner tube designed to shave rotational mass without sacrificing durability. Key Features: Weight-Optimized Construction: 0.7 mm wall thickness (–22 % versus standard) for reduced weight. Durable Butyl Compound: Automated hot-feed extrusion with hydraulic press–cured vulcanization ensures consistent, high-quality construction. Pre-Inflation Quality Check: Each tube is inflated and stored for 24 hours to detect leaks or defects before packaging. Presta Valve (French Valve): Low-lead nickel-plated valve with a threaded stem and removable core for easy sealant injection or cleaning. Valve Length Options: Available in 48 mm, 60 mm, or 80 mm to accommodate shallow to deep-section rims. Easy Identification: Comes in an unmistakable orange-coded box. Specifications: Size: 700 × 23–28 mm Wall Thickness: 0.7 mm (–22 % weight reduction) Valve: Presta, removable core Valve Lengths: 48 mm / 60 mm / 80 mm
