The Specialized PV Tube is a high-quality replacement inner tube designed for 27.5″ (650B) mountain bike tires from 2.3″ up to 3.0″ wide. Made from durable butyl rubber, it features a 40 mm Presta valve with removable core for easy sealing and tubeless-style inflation. Its optimized wall thickness balances weight and puncture resistance, making it suitable for trail, enduro, and all-mountain riding.

• Size: 27.5 × 2.3–3.0 inches

• Valve: 40 mm Presta with removable core

• Material: butyl rubber for air retention and durability

• Wall thickness: ~0.8 mm for balanced weight and puncture resistance

• Weight: approximately 105 g

• Includes: valve cap; core removal tool compatibility

• Use: standard replacement tube or emergency spare