2.75/3.00-19" Dirt Bike Inner Tubes - These universal fit inner tubes (2-pack) fit most dirt and pit bikes with 19-inch rims and tires between 2.75 and 3.00 inches wide, ensuring compatibility and versatility for your dirt pit bike. | 19" Dirt Bike Inner Tubes with TR4 Valve - These heavy-duty inner tubes match the exact size of 2.75-19", 3.00-19", 70/100-19", 80/100-19" dirt bike tires. Equipped with durable TR4 valve stems for reliable performance on tough terrains. | Compatible with Multiple Dirt Bike Brands - Designed for motocross and enduro use, these inner tubes fit several dirt bike brands and models, including Compatible with Surron, Talaria, L1E, Sur Ron, Segway, UltraBee, and more. | Enhanced Riding Comfort On and Off the Trail - Made from thick butyl rubber, 4x stronger than average, these inner tubes are puncture-resistant and provide excellent shock absorption, reducing vibrations and hard impacts for a smoother ride in any season. | Heavy-Duty Self-Sealing Inner Tubes and Notice - Stay safe with inner tubes that self-seal around puncture holes, preventing rapid air loss. Providing an extra layer of security on your rides. When replacing the inner tube, refrain from using sharp tools. When changing a inner tube, inflate it slightly to avoid twisting and check that the tire bead is evenly seated on both sides of the rim.