Specialized SV TR 29in Tube Black, 40mm Valve, 29x1.75-2.4

What Our Gearhead(R) Experts Are Saying:"I usually recommend this tube to riders who are constantly dealing with goatheads or trail debris. The thicker outer wall helps stop punctures before they reach the air chamber, but it's thinner against the rim so the ride still feels reasonably lively for a heavy-duty tube."We've all had rides cut short by a thorn hiding in the trail or a sharp piece of debris along the shoulder. The Specialized Thorn-Resistant Schrader Valve Tube helps keep the ride going, adding reliable flat protection when our routes lead through rocky paths, dusty trails, or thorn-covered terrain. Specialized builds the Thorn-Resistant Schrader Valve Tube with a thoughtful dual-thickness construction. The outer side of the tube-where punctures most often occur-is reinforced with thicker rubber to resist thorns and sharp debris. The rim-facing side is made thinner to help reduce unnecessary weight and maintain a smoother ride feel. The result is a tube that delivers dependable puncture resistance without completely sacrificing ride performance.