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.