The Specialized SV Tube 26 × 2.3–3.0 uses a Schrader valve and is built from consistent-thickness butyl rubber for reliable air retention and smooth rolling. It fits 26″ mountain bike tires between 2.3″ and 3.0″ wide, making it a versatile replacement or spare tube for trail, enduro, and casual riding.

• Tube size: 26 × 2.3–3.0 inches

• Valve type: 40 mm Schrader (molded valve)

• Material: butyl rubber, molded for uniform wall thickness

• Weight: approximately 105 g

• Use: replacement inner tube or emergency spare