WATODAY 4.00/4.10-18 3.50-18 Inner Tube with TR4 Straight Valve Stem for 4.00-18 3.50-18 (100/100-18 120/80-18 120/90) Motorcycle Motorbike Pit Dirt Bike Trail Bike, 2Pcs - AWHAS-5-26

• Wide Compatibility - Inner Tubes fit for 4.00-18 3.50-18 motorcycle motorbike pit dirt bike. Please check for the details and dimension to make sure these parts will fit Higher Rubber Content - These inner tubes have a premium butyl rubber content that is 45% higher than competitors’ tubes. They feature a 480% stretch rate resulting in better shock absorption and longer service life Heavy-Duty, Leak-Resistant - Butyl rubber, which is ideal for preventing air leakage, composition plus thickened sidewalls makes them puncture and explosion-resistant. They have excellent air retention up to 90 days Durable & Leak-resistant Valves – Straight valves are fitted into thick valve seats for enhanced durability. Pure copper dust caps have built-in rubber seals that keep out dust and water.The tough rubber stem seat is also tear resistant to extend the service life of the valve All in one Kit- Every purchase is covered by our 1-year replacement. This package includes 2pcs inner tubes with straight valves, 2 copper valve stem dust caps.The valve is a key component of an inner tube's air retention